Polyhydroxyalkanoates (PHA) represent a family of 100% bio-based polymers, synthesized by natural microorganisms. They offer a unique and compelling value proposition: a combination of versatile, tunable performance characteristics and, most critically, the proven ability to biodegrade completely across a wide spectrum of natural environments. This includes soil, freshwater, and marine ecosystems, a capability that distinguishes PHA from all other major bioplastics and directly addresses the global crisis of microplastic pollution.
Sales Plastics is a premier, vertically integrated manufacturer of high-performance PHA resins. The company provides a comprehensive portfolio of globally certified, application-specific grades, supported by deep technical expertise and an unwavering commitment to quality and supply chain reliability. This report is designed to serve as a definitive guide for procurement partners, materials engineers, and sustainability leaders, empowering them with the data and strategic context needed to make informed sourcing decisions. More Plastic Polymer →
The New Polymer Paradigm: An Introduction to PHA
The Imperative for a Post-Petroleum Plastic
The global materials landscape is undergoing an irreversible transformation as petroleum-based plastics face mounting pressure from converging regulatory, commercial, and health-driven forces. Governments worldwide are enforcing stringent laws, such as the EU Single-Use Plastics Directive and U.S. waste reduction initiatives, which make sustainable material adoption essential for market access. At the same time, multinational corporations are driving top-down demand through ESG commitments that make environmentally responsible materials a procurement priority across supply chains. Growing concerns over the health risks of conventional plastics, particularly in sensitive applications like food packaging and medical products, further accelerate the shift toward safer and biodegradable alternatives. Together, these forces are reshaping the market, turning materials like PHA from niche options into strategic necessities for future-proof businesses.
What is Polyhydroxyalkanoate (PHA)?
Polyhydroxyalkanoate (PHA) is a biologically derived family of natural polyesters produced by microorganisms through fermentation of renewable carbon sources. Its key advantage is molecular tunability: by choosing different microbial strains and feedstocks, PHA can be engineered into rigid, polypropylene-like materials or flexible elastomers. With billions of potential molecular structures, PHA forms a customizable polymer platform that can be tailored for specific performance needs—such as mechanical strength, barrier properties, or controlled biodegradation—enabling manufacturers like Sales Plastics to deliver application-specific material solutions.
“PHAs represent nature’s own solution to the plastic problem—materials that deliver performance without the environmental persistence of conventional plastics.”
The Sales Plastics Production Process: Green Bio-Manufacturing
The production of PHA at Sales Plastics follows a green bio-manufacturing model that prioritizes sustainability and circularity from raw material selection to final resin. The process begins with renewable carbon feedstocks, using not only clean first-generation sources like sugars and starches but also prioritizing second-generation options such as agricultural residues, industrial byproducts, and organic waste streams. This diversified sourcing strategy reduces dependency on food crops, lowers material costs, and protects against commodity price volatility while reinforcing an ethical and circular supply chain. Fermentation then takes place in bioreactors using non-genetically modified microorganisms that convert carbon into PHA under controlled conditions. The process is energy-efficient and low-carbon, cutting greenhouse gas emissions by up to 90% versus petroleum plastics. After fermentation, the PHA is extracted, purified, and pelletized into high-quality resin ready for downstream applications.
The True Circularity of PHA: A Microplastic-Free Lifecycle
The key environmental advantage of PHA is its true circularity—unlike conventional plastics or partially degradable bioplastics, PHA is fully broken down by microorganisms in natural environments. At end of life, microbes recognize it as a nutrient source and decompose it into water, carbon dioxide, and biomass, leaving no persistent residues. Importantly, PHA does not fragment into microplastics; it is completely metabolized, making it a “zero microplastic” material and a meaningful solution to plastic pollution.
The Natural Cycle
PHA begins and ends with nature. Produced by microorganisms from renewable resources, it returns to the environment through complete biodegradation, becoming food for the same microbes that created it—leaving no persistent residues.
The Product Cycle
In paper-plastic composites like cups and containers, PHA coatings offer strong recycling performance. Sales Plastics’ PHA-coated paper achieves over 90–95% repulpability, enabling easy recovery of paper fiber—far superior to non-repulpable PE coatings.
The Byproduct Cycle
The PHA bio-manufacturing process is circular by design. Residual microbial biomass left after extraction is repurposed as a nutrient-rich co-product for health supplements, cosmetics, or animal feed, while the remaining fermentation broth can be converted into fertilizers—ensuring minimal waste and full resource utilization.
A Comparative Analysis: Positioning PHA in the Bioplastics Landscape
Performance Benchmarking
PHA versatility allows it to be formulated to match or exceed the performance of other bioplastics in several critical areas. The following table summarizes the typical properties of Sales Plastics PHA grades compared to PLA, PBAT, and PBS, providing a clear reference for application development.
The data clearly illustrates PHA balanced performance profile. While PLA offers high stiffness (Flexural Modulus) and tensile strength, it is brittle (low elongation) and has a low heat deflection temperature, limiting its use in hot-fill applications. It also possesses poor barrier properties against oxygen and moderate barrier against water. PBAT offers excellent flexibility (high elongation) but has very low strength, heat resistance, and poor barrier properties. Sales Plastics PHA, through copolymerization, can be tailored to provide a wide range of properties, from rigid grades with high heat resistance (HDT up to 130°C) to more flexible grades, while consistently offering superior barrier performance against both water vapor and oxygen compared to PLA.
The Unmatched Degradation Profile
PHA greatest competitive advantage lies in its end-of-life performance—the core of its strategic value. Unlike PLA and PBAT, which can only biodegrade under specific industrial composting conditions, PHA is certified to break down across all environments, including home composting, soil, freshwater, and marine settings. This universal biodegradability eliminates the dependency on specialized facilities and ensures that even if a PHA product leaks into nature, it will fully decompose without harm. For global brands, this provides crucial “brand insurance.” Mismanaged waste from PLA or PBAT can persist as pollution, creating reputational and regulatory risks. PHA, however, acts as a natural fail-safe—degrading safely wherever it ends up. For companies in food, beverage, and consumer goods sectors, adopting PHA means not only choosing sustainability but also mitigating the long-term risks of plastic pollution.
Strategic Material Selection
Based on this comparative analysis, Sales Plastics provides the following clear, actionable guidance for material selection:
- For applications where rigidity and transparency are the primary requirements, and where end-of-life can be strictly controlled within a closed-loop system that guarantees collection and routing to industrial composting (e.g., event catering, institutional food service), PLA can be a suitable and cost-effective choice.
- For applications where extreme flexibility is the main driver and mechanical strength is less critical, blends containing PBAT may be considered, provided the disposal pathway is managed.
However, for any application where the product has a risk of leaking into the natural environment, where superior barrier properties are needed to extend shelf life, where high heat resistance is required, or where the brand requires an unambiguous and defensible sustainability story with no compromises, Sales Plastics PHA is the unequivocal material of choice. Its unique combination of tunable performance and comprehensive biodegradability makes it the most responsible and strategically sound option for the modern market.
Need help selecting the right PHA grade for your application?
Our technical team can provide material selection guidance based on your specific requirements.
The Sales Plastics PHA Portfolio: Engineered for Performance and Sustainability
Sales Plastics offers a comprehensive portfolio of PHA resins, meticulously engineered to meet the diverse needs of our clients across multiple industries. Each product series is designed for specific processing methods and end-use applications, ensuring optimal performance, processability, and sustainability. Our portfolio is fully certified to meet the highest global standards for safety and environmental responsibility.
Industrial-Grade Resins (Sales Plastics IG Series)
IG-3000 Series: General Purpose PHA
The Sales Plastics IG Series represents our family of versatile, general-purpose resins. These grades are designed for a wide range of processing techniques, including extrusion, cast film, thermoforming, and injection molding. They also serve as excellent performance modifiers when blended with other biopolymers such as PLA, PBS, or PBAT. Adding Sales Plastics IG resins can significantly improve the heat resistance, water and oxygen barrier properties, and biodegradability of the final blend, allowing for the creation of advanced composite materials with tailored properties.
FDA Approved Home Compostable Marine Degradable
High-Performance Coatings for Paper & Board (Sales Plastics BarrierCoat Series)
The Sales Plastics BarrierCoat Series offers advanced solutions for food service packaging, designed to replace traditional polyethylene (PE) and harmful per- and polyfluoroalkyl substances (PFAS, or “forever chemicals”). These coatings provide an excellent barrier against water, oil, and oxygen, while ensuring the final product is fully biodegradable, compostable, and highly repulpable. This allows for the creation of sustainable paper cups, containers, and wrappers that do not compromise on performance or environmental responsibility. With repulpability rates exceeding 95% for our water-based emulsion, this series is a key enabler of the circular economy for paper products.
| Performance Metric | Sales Plastics ExtrudeShield | Sales Plastics AquaCoat | PE Coating | PLA Coating | Acrylic/EAA Emulsion | PFAS |
| Oxygen Barrier (OTR) | Excellent | Excellent | Moderate | Good | Good | Limited |
| Water Vapor Barrier (WVTR) | Good | Good | Good | Moderate | Good | Good |
| Heat Resistance | ||||||
| Paper Repulpability | > 90% | > 95% | Non-repulpable | Non-repulpable | > 95% | > 95% |
| Bio-based | Yes | Yes | No | Yes | No | No |
| Fluorine-Free | Yes | Yes | Yes | Yes | Yes | No |
AquaCoat PB-1001LA (Water-based Emulsion)
This product is a stable, water-based dispersion of PHA particles, designed for application onto paper and board substrates via standard coating equipment. It forms a high-performance barrier film upon drying.
| Performance | Typical Value | Unit |
| Color | Milky white | – |
| Viscosity | 100 – 500 | |
| Solid Content | 30 – 35 | % |
| Odor | Faint | – |
| pH | 7 – 9 | – |
| Particle Size (D90) | < 10 | |
| Glass Transition Temp () | -10 – 0 | °C |
| Melting Point () | 110 – 150 | °C |
| Experimental Film-Forming Temp | 150 | °C |
| Experimental Film-Forming Time | < 120 | s |
FDA Approved Paper Recyclable
ExtrudeShield PB-1002LA (Extrusion Coating Grade)
This resin is specifically formulated for extrusion coating processes, where it is applied as a thin, molten film onto paper or other substrates to form a seamless, durable barrier layer.
| Performance | Typical Value | Unit | Testing Standards |
| Melt Index (180°C, 2.16kg) | 1 – 5 | g/10min | ISO 1133 |
| Melting Point | 170 | °C | DSC / ISO 11357 |
| Density | 1.23 | ISO 1183 | |
| Crystallinity | 40 – 55 | % | DSC / ISO 11357 |
| Tensile Strength | 23 – 35 | MPa | ISO 527 |
| Elongation at Break | 8 – 60 | % | ISO 527 |
| Notched Izod Impact Strength (23°C) | 2 – 8 | ISO 180 | |
| Heat Deflection Temp (0.455 MPa) | 98 – 120 | °C | ISO 75 |
FDA Approved Industrial Compostable
Injection Molding Grades (Sales Plastics IM Series)
The Sales Plastics IM Series is engineered for high-performance injection molding applications. These grades are characterized by excellent heat resistance, with a heat deflection temperature (HDT) of up to 130°C, combined with superior toughness and rapid crystallization for efficient cycle times. This makes them an ideal sustainable choice for durable and semi-durable goods such as premium foodservice cutlery, cosmetic packaging, and children’s toys, where safety, performance, and environmental responsibility are paramount.
| Performance | Typical Value | Unit | Testing Standards |
| Melt Index (180°C, 2.16kg) | 3 – 15 | g/10min | ISO 1133 |
| Melting Point | 170 – 175 | °C | DSC / ISO 11357 |
| Tensile Strength | 36 | MPa | ISO 527 |
| Crystallinity | 30 – 45 | % | DSC / ISO 11357 |
| Elongation at Break | 3.5 | % | ISO 527 |
| Notched Izod Impact Strength (23°C) | 2.5 | ISO 180 | |
| Heat Deflection Temp (0.455 MPa) | 130 | °C | ISO 75 |
Specialized Grades for Straw Extrusion (Sales Plastics ST Series)
In response to global regulations phasing out single-use plastic straws, Sales Plastics offers the ST Series, a dedicated solution for straw extrusion. This grade provides an excellent balance of properties, including high toughness to prevent cracking and superior heat resistance up to 110°C, making the straws suitable for both hot and cold beverages. Critically, products made from this grade demonstrate rapid biodegradability in marine environments, with laboratory tests showing nearly 90% disintegration in seawater within just 42 days.
Advantages Over Conventional Straws
| Performance | Typical Value | Unit | Testing Standards |
| Melt Index (180°C, 2.16kg) | 3 – 5 | g/10min | ISO 1133 |
| Melting Point | 170 | °C | DSC / ISO 11357 |
| Tensile Strength | 30 | MPa | ISO 527 |
| Crystallinity | 35 – 45 | % | DSC / ISO 11357 |
| Elongation at Break | 3.5 | % | ISO 527 |
| Notched Izod Impact Strength (23°C) | 2.0 | ISO 180 | |
| Heat Deflection Temp (0.455 MPa) | 110 | °C | ISO 75 |
Advanced Filaments for 3D Printing (Sales Plastics 3D-Print Series)
The Sales Plastics 3D-Print Series brings the sustainability of PHA to the world of additive manufacturing. These high-performance filaments are optimized for Fused Deposition Modeling (FDM) printers, supporting high-speed printing up to 200-300 mm/s with rapid crystallization that ensures clean prints with no stringing. The series is available in a wide array of colors and unique aesthetic finishes, including classic colors, metallic silk sheens, and innovative biomass-speckled filaments infused with materials like coffee grounds or tea leaves, offering a sustainable and beautiful solution for prototyping, medical models, fashion, and home décor.
| Property | Value |
| Filament Specifications | |
| Filament Diameter | 1.75 mm (±0.05 mm) |
| Density | 1.24 |
| Net Weight | 1 kg |
| Physical Properties (from Injection Molded Samples) | |
| Tensile Strength | 16 – 19 MPa |
| Elongation at Break | > 50% |
| Flexural Strength | 16 – 23 MPa |
| Flexural Modulus | 700 – 1100 MPa |
| Heat Deflection Temperature | > 85°C |
| Recommended Printing Settings | |
| Nozzle Temperature | 200 – 210°C |
| Bed Temperature (Cool Plate) | 20 – 45°C |
| Bed Temperature (PEI Plate) | 50 – 70°C |
| Print Speed | 200 mm/s (Optimal: 50-100 mm/s) |
| Part Cooling Fan | 100% |
| Retraction Distance | 0.8 – 1.0 mm |
| Drying Conditions (before printing) | 65°C for 4-8 hours |
Unlocking Innovation: PHA Applications Across Key Industries
The unique combination of performance, processability, and unparalleled sustainability makes PHA a versatile platform for innovation across a wide range of high-value industries. As production scales and costs continue to decrease, PHA is moving from niche applications to become a mainstream solution for some of the world’s most pressing material challenges.
Revolutionizing Packaging & Food Service
PHA offers versatile solutions for sustainable food packaging and service items
PHA in Food Packaging and Serviceware
The packaging and food service sector is the largest and most immediate market for PHA, driven by intense regulatory pressure and consumer demand for alternatives to single-use plastics. PHA is the leading solution for items where collection and recycling are challenging and the risk of environmental leakage is high. This includes products like disposable cutlery, drinking straws, coffee pods, and food containers.
Performance and Safety Advantages of PHA
PHA superior barrier properties are a key performance advantage in this sector. Its low water vapor and oxygen transmission rates, particularly when compared to PLA, help extend the shelf life of packaged foods, reducing food waste and preserving product quality. Furthermore, its comprehensive food-contact safety certifications from major global regulatory bodies—including the FDA in the US, EFSA in the EU, and CFSA in China—provide an unequivocal guarantee of safety for brands and consumers alike.
Expanding into Cosmetics Packaging
Beyond food packaging, an important emerging application is in the cosmetics industry. This sector, which relies heavily on premium packaging to convey brand value, is increasingly seeking sustainable materials that do not compromise on aesthetics or performance. PHA can be injection molded into high-quality, durable jars, caps, and containers that offer a luxurious feel and a powerful eco-conscious story, justifying the material’s premium positioning.
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Our packaging specialists can help you identify the best opportunities for PHA integration.
Advancing Modern Healthcare
The biomedical sector represents one of the highest-value markets for PHA, where its unique biological properties are paramount. The market for biodegradable medical plastics was valued at USD 1.7 billion in 2023 and is projected to grow to USD 4.5 billion by 2032, indicating a significant opportunity. PHA excellent biocompatibility means it does not elicit an adverse immune response when used inside the human body, and its resorbability means it can be safely and naturally broken down and absorbed over time.
- Absorbable Sutures and Fixation Devices: Surgical sutures, clips, and screws that hold tissue in place during healing and then safely dissolve, eliminating the need for a second removal surgery.
- Tissue Engineering Scaffolds: Intricate, 3D-printed structures that provide a temporary framework for cells to grow and regenerate damaged tissues or organs, such as bone, cartilage, or nerves. The scaffold degrades as new tissue forms.
- Cardiovascular Devices: Applications include resorbable stents that keep an artery open after a procedure and then disappear, leaving a healed, natural vessel behind.
- Controlled-Release Drug Delivery: PHA can be used to encapsulate therapeutic agents. The polymer is engineered to degrade at a precise rate, releasing the drug in a controlled and sustained manner over days, weeks, or months.
The capacity to tune PHA properties is a transformative advantage in this field. The degradation rate of a medical implant is not just a material property; it is a therapeutic parameter. By precisely controlling the monomer composition of the PHA polymer, medical device designers can program the material to degrade at a rate that perfectly matches the healing profile of the specific tissue it is supporting—be it a fast-healing soft tissue or a slow-mending bone. This level of control opens the door for a new generation of “smart” medical devices that actively participate in the healing process. This capability allows Sales Plastics to function not just as a material supplier to medical device companies, but as a strategic co-development partner, creating custom PHA formulations to enable novel therapeutic solutions that would be impossible with less versatile materials.
Transforming Sustainable Agriculture
PHA agricultural applications reduce plastic pollution while enhancing crop production
The agricultural industry is a major consumer of plastic, particularly in the form of films used for mulching, greenhouses, and silage. The disposal of these films presents a significant logistical and environmental challenge, often resulting in soil contamination with plastic fragments. PHA offers an elegant and effective solution due to its certified soil biodegradability.
The market for bioplastics in agribusiness is poised for substantial growth, projected to expand from USD 3.7 billion in 2025 to USD 12.6 billion by 2034. Key applications for PHA in this sector include:
Biodegradable Mulch Films
PHA mulch films suppress weeds, conserve water, and regulate soil temperature. After the growing season, they can be tilled into the soil to biodegrade naturally, reducing labor costs and eliminating plastic waste.
Planters and Seedling Pots
Pots and trays made from PHA can be planted directly into the ground along with the plant. The pot biodegrades over time, allowing the roots to grow freely without the shock of being transplanted.
Controlled-Release Coatings
PHA can be used to coat fertilizers and pesticides. The coating biodegrades in the soil at a controlled rate, slowly releasing the active ingredients. This improves nutrient uptake efficiency, reduces the total amount of chemicals needed, and minimizes runoff into waterways.
Partnering with Sales Plastics: Your Gateway to a Sustainable Future
The transition to sustainable materials is no longer a matter of choice but a strategic imperative for any forward-looking enterprise. Navigating this transition requires a partner that offers not only superior materials but also deep technical expertise, unwavering quality, and a shared commitment to a sustainable future. Sales Plastics is that partner.
Our Unwavering Commitment to Quality and Consistency
At Sales Plastics, our foundation is built upon a dedication to excellence. We employ state-of-the-art green bio-manufacturing processes, coupled with rigorous, multi-stage quality control protocols, from feedstock validation to final resin analysis. This ensures that every batch of Sales Plastics PHA meets the highest standards for purity, performance, and consistency. Our partners can build their products and their brand reputations on the foundation of a material they can trust, shipment after shipment.
Global Compliance and Certification: Your Guarantee of Market Access
In today’s global marketplace, compliance is paramount. A material’s certifications are its passport to market entry, providing an independent, third-party guarantee of its safety, performance, and environmental claims. Sales Plastics has proactively secured a comprehensive suite of the world’s most respected certifications, ensuring that products made with our PHA can be sold with confidence in key markets across North America, Europe, and Asia. Our certification portfolio includes:
- Food Contact Compliance: Full compliance for food-contact applications, certified by the U.S. Food and Drug Administration (FDA), the European Food Safety Authority (efsa), and the China National Center for Food Safety Risk Assessment (CFSA).
- Biodegradability: Certified for biodegradability in sensitive aquatic ecosystems by TÜV Austria under the OK biodegradable MARINE and OK biodegradable WATER standards.
- Compostability: Certified for both industrial and home composting environments by TÜV Austria (OK compost INDUSTRIAL & OK compost HOME) and the Biodegradable Products Institute (BPI) in North America.
- Bio-based Content: Verified for 100% renewable content under the USDA Certified Biobased Product program.
- Other Key Standards: Full compliance with the EU’s REACH regulation for chemical safety and HALAL certification for applicable markets.
This robust certification package provides our partners with a powerful tool to substantiate their sustainability claims, build consumer trust, and ensure seamless access to regulated markets worldwide.
Strategic Recommendations for Procurement & Product Development
Sales Plastics operates as a strategic partner, not just a supplier. We work closely with our clients to ensure a successful and value-driven transition to PHA. We recommend a phased adoption strategy to maximize impact and ROI:
- Identify High-Value Applications: Begin the transition with products where PHA unique benefits can command a market premium or solve a critical challenge that other materials cannot. Target applications where marine safety, high heat resistance, superior barrier properties, or medical-grade biocompatibility provide a clear competitive advantage.
- Leverage the Sustainability Narrative: The story of PHA is powerful. Work collaboratively with marketing and communications teams to educate consumers on the benefits of a “Zero Microplastic,” “Marine Safe,” and fully bio-based material. This transforms the material choice from a simple component into a compelling brand asset that drives consumer preference and loyalty.
- Collaborate with Sales Plastics: Engage our technical and application development teams early in the design process. Our experts can provide invaluable guidance on material selection, part design, and processing optimization to ensure the final product meets all performance and cost targets. We can help select the optimal grade from our existing portfolio or co-develop a custom formulation for unique application requirements.
Is PHA compostable in home composting systems?
Yes, many of our PHA formulations are certified for home composting through TÜV OK Compost Home certification. These grades will completely biodegrade in home composting conditions within 6-12 months, depending on specific environmental factors like temperature and microbial activity.
Can PHA replace polypropylene in my existing manufacturing process?
In many cases, yes. Our PHA formulations are designed to process on conventional plastic equipment with minimal modifications. Most customers require only minor adjustments to temperature profiles and cooling parameters. Our technical team provides comprehensive processing guides and on-site support to ensure successful implementation.
What is the shelf life of PHA materials?
When stored in original sealed packaging in cool, dry conditions, our PHA materials maintain their properties for 24 months. We recommend processing within 12 months of delivery for optimal results. All packages include production date information for inventory management.
Adopting PHA for a Resilient Business and a Healthier Planet
The evidence presented in this report leads to an unequivocal conclusion: the transition to sustainable materials is both inevitable and accelerating. Regulatory mandates, consumer expectations, and the tangible risks of environmental pollution have created a new reality for businesses. In this reality, the choice of material is a direct reflection of a company’s strategy, its values, and its viability.
By adopting Polyhydroxyalkanoates today, our clients are making a decision that transcends environmental stewardship. It is a strategic business decision that builds brand equity, mitigates regulatory and reputational risk, and establishes a significant competitive advantage in the circular economy of tomorrow. PHA is not just a replacement for plastic; it is an investment in a more resilient business and a healthier planet. Partnering with Sales Plastics is the most direct, reliable, and technically supported path to achieving these critical goals.
