PHA Bioplastics: What It Is and Why It Matters for Packaging
PHA is the petroleum-free bioplastic behind most of the Pure Form Solution catalog. This hub explains what it is, how it compares, and which certifications apply.
What Is PHA?
PHA, short for polyhydroxyalkanoate, is a family of biopolymers that microorganisms produce as an energy reserve. Manufacturers harvest it and process it into resin that can be molded into straws, cups, utensils, containers and bottles. Pure Form Solution supplies PHA packaging for restaurants, hotels, healthcare, schools, food service and retail.
How Is PHA Made?
Specialized bacteria are fed a renewable feedstock such as canola oil. Under controlled conditions they convert it into PHA inside their cells. The PHA is then extracted, purified and compounded into pellets for molding. No petroleum is used as an input.
PHA vs. Traditional Plastic
Traditional plastic is made from fossil fuels and persists for centuries, breaking into microplastics. PHA is made by fermentation and is designed to be consumed by microorganisms at end of life. For many items, PHA is a drop-in replacement that looks and handles like plastic.
PHA vs. PLA
PLA is made from plant sugars and is typically certified for industrial composting, where sustained high heat is available. PHA is produced by bacteria and can, for certified products, also biodegrade in home compost, soil and marine environments. PLA remains a good fit for items like clear clamshells that go to commercial composting.
PHA vs. Paper
Paper straws and cups can soften, and many paper items carry a plastic or PFAS-type liner that complicates composting. PHA keeps its shape in hot and cold drinks. Always ask for the coating and certification details of any paper product you compare against.
PHA vs. Petroleum-Based Plastic
The table below summarizes how the main options compare. Claims describe typical behavior; certification applies to specific products and test conditions.
| PHA | PLA | Paper | Petroleum plastic | |
|---|---|---|---|---|
| Raw material | Plant-based feedstock, fermented by bacteria | Plant sugars (corn, sugarcane), polymerized | Wood pulp | Petroleum or natural gas |
| Industrial composting | Certified for qualifying products | Yes, certified | Varies; often lined with plastic | No |
| Home composting | Certified for qualifying products | Generally not | Varies by coating | No |
| Soil and marine biodegradation | Certified for qualifying products | Not generally claimed | Uncoated paper degrades; coatings vary | No, fragments into microplastics |
| Feel and performance | Plastic-like; no soggy collapse | Plastic-like, lower heat tolerance | Can soften with liquids | Plastic |
Is PHA Compostable?
PHA products can be certified for industrial composting (OK Compost Industrial) and, for qualifying products, home composting (OK Compost Home). The certificate belongs to a specific product, so check which condition it covers before making a compostability claim to your customers.
Is PHA Marine Biodegradable?
PHA is among the few bioplastics with a marine biodegradation certification (OK Biodegradable Marine). Breakdown speed depends on temperature and microbial activity, so marine biodegradability is not a license to litter. It means the material is designed to be consumed rather than fragment into microplastics if it does reach the ocean.
PHA Packaging Applications
Every PHA product line is linked below.
PHA Certifications
Pure Form Solution products are tested by TÜV Austria under six OK standards: Compost Industrial, Compost Home, Biodegradable Soil, Biodegradable Marine, Biodegradable Water and Biobased. See the Certifications & Testing page for definitions and a product-by-product table.
Which Sustainable Material Is Right for You?
A quick side-by-side of the materials we supply. Certifications are TÜV Austria OK marks and apply to specific products and test conditions, so request the certificate for the exact item you plan to buy. See the full certifications table.
| Material | Best for | Marine | Home compost | Industrial compost | Petroleum-based | Shop |
|---|---|---|---|---|---|---|
| PHAFermented canola oil bioplastic | Straws, stirrers, cups and lids, utensils, containers, bottles | OK Biodegradable Marine (qualifying products) | OK Compost Home (qualifying products) | OK Compost Industrial | No | |
| PLAPlant-sugar bioplastic (corn, sugarcane) | Clamshells and food packaging going to commercial composting | Not claimed | Not claimed | OK Compost Industrial | No | |
| Sugarcane-basedSugarcane-derived PLA bioplastic | Bottles and beverage packaging | Not claimed | Not claimed | OK Compost Industrial | No |
Not sure which fits? Request samples or ask a packaging specialist.
PHA Questions, Answered
What is PHA?
PHA (polyhydroxyalkanoate) is a bioplastic produced by bacterial fermentation of plant-based feedstocks such as canola oil. It is petroleum-free and designed to biodegrade.
Is PHA compostable?
PHA can be certified for industrial composting and, for qualifying products, home composting. Certification applies to specific products and conditions, so confirm the certificate for the product you plan to buy.
Is PHA marine biodegradable?
PHA is one of the few bioplastics with marine biodegradation certification (OK Biodegradable Marine by TÜV Austria) for qualifying products. Biodegradation rates depend on conditions such as temperature and microbial activity.
How is PHA different from PLA?
PLA is typically certified for industrial composting only and needs high heat to break down. PHA is produced by microorganisms and can biodegrade in a wider range of environments, including soil and marine settings, for certified products.
Talk to a PHA Packaging Specialist
Tell us what you use today and we will recommend the PHA replacement.
Talk to a Packaging Specialist