Overview
Polyhydroxybutyrate (PHB) is a naturally occurring biodegradable polyester synthesized by various microorganisms as an energy storage material. It belongs to the polyhydroxyalkanoate (PHA) family and is known for its thermoplastic properties and environmental compatibility. PHB is produced through bacterial fermentation of sugars or lipids, making it a sustainable alternative to petroleum-based plastics. Its molecular structure consists of repeating 3-hydroxybutyrate units, which contribute to its crystalline nature and mechanical strength.
Physical and Chemical Properties
PHB exhibits a high degree of crystallinity (60-80%), which affects its mechanical properties such as tensile strength and brittleness. Its glass transition temperature (Tg) ranges between 0-10°C, while its melting point is around 170-180°C. The polymer is resistant to ultraviolet light and hydrolytic degradation but is susceptible to microbial degradation in soil and marine environments. Its solubility in organic solvents like chloroform makes it suitable for processing into films, fibers, and molded products.
Main Applications
PHB is widely used in biodegradable packaging, including food containers, agricultural films, and disposable cutlery, where environmental sustainability is prioritized. Its biocompatibility allows for medical applications such as surgical sutures, bone plates, and controlled drug delivery systems. In the textile industry, PHB fibers are explored for eco-friendly fabrics. Recent research focuses on blending PHB with other polymers to improve flexibility and reduce production costs for broader industrial adoption.
Safety and Storage
PHB is non-toxic and approved for food-contact applications in many jurisdictions. However, dust inhalation during handling should be minimized using proper ventilation or PPE. Processed PHB products are stable under normal conditions but degrade in composting facilities within weeks. Storage recommendations include keeping the material in airtight containers at room temperature (15-25°C) with relative humidity below 50%. Prolonged exposure to moisture may initiate premature biodegradation.
B2B Procurement Guide
When sourcing PHB, confirm the producer's fermentation technology and yield efficiency, as these impact price and quality. Certifications like EN 13432 (compostability) or USP Class VI (medical grade) should be verified based on intended use. Bulk purchasers should negotiate pricing tiers for quantities above 1 ton, with prices typically decreasing by 10-20% for large orders. Consider suppliers offering technical support for processing parameters, as PHB requires specific temperature controls during molding or extrusion.
Related Manufacturers
- 主营：伊士曼、中昊晨光、杜邦、聚苯酯粉PHB、奇美、台化、基础创新、日本出光、3M、日本大金、信越化学、美国盛禧奥、阿科玛、日本瑞翁、日本积水、德国赢创、韩国SK、巴斯夫、日本三菱、日本住友、日本东丽、乐天化学、日本东洋纺、韩国LG、盛禧奥、金发科技
- 主营：肌氨酸钠、硫化锰、V50偶氮二异丁脒盐酸盐、聚苯乙烯、腰果酚缩水甘油醚、乙硫氮、二新癸酸二甲基锡、三硫代碳酸钠、PX-4MP、芥酸PKO、四氧化三锰
- 主营：光稳定剂1084、抗氧剂9228、荧光增白剂OB、对甲苯磺酸钠、光引发剂651、抗氧剂565、苯并三氮唑 BTA、抗氧剂5067、紫外线吸收剂BP9、紫外线吸收剂BP8、抗氧剂1098、紫外线吸收剂BP-1、抗氧剂T502、抗氧剂1135、水溶性紫外线吸收剂D、抗氧剂BHA、内酯型抗氧剂136、光引发剂CBP、十二烷基苯磺酸钠、防老剂2246、抗氧剂、紫外线吸收剂、防老剂
- 主营：硫酸烟酰苯胺、TS-1钛硅分子筛、2-氯丙酰氯、甲基磺酸铋、异硬脂酸、油酸咪唑啉、苯基膦酸、单宁酸、抗氧剂、中间体、离子液体
- 主营：硫化锰、丙酮缩甘油、甲基三丁基膦磷酸二甲酯盐
- 主营：阻燃剂、催化剂、洗涤剂、硫酸铵、醋酸镧、起泡剂、清洗剂、碳酸钙、抗氧剂、灭火剂、交联剂、粘合剂、封头剂、丙二醇、酸二氢铝、聚乙烯醇、对氯溴苯、生物试剂、息香乙醚、异戊二醇、香精香料、4-丁二醇、2-氯丙烯腈、2-己基癸酸、二甲胺硼烷
- 主营：聚苯乙烯、耐高温注塑abs、塑料电器外壳、塑料玩具灯座件
- 主营：电绝缘、英力士、瑞士ems、聚苯乙烯、耐酸碱、66-玻纤、聚丙烯、抗静电、均聚物、原厂原包、抗冲共聚、阻燃防火、无规共聚、薄壁零件、薄壁配件、抗紫外线、电器组件、埃克森美孚、巴西布拉格、apel-apl5514ml-coc、apel-coc-apl5514ml
- 主营：上转换纳米粒子、聚乙二醇PEG衍生物、嵌段聚合物、聚苯乙烯、纳米材料、荧光染料、金纳米粒、银纳米粒、二氧化硅、四氧化三铁
- 主营：嵌段共聚物、合成磷脂、荧光染料、PBPA聚苯乙烯、PEG、点击化学、量子点
- 主营：碳材料、c60粉体、cotg昂星、聚苯乙烯、双层昂星、分析仪bet、cvd石墨烯、单层昂星、3d多层独立、电位分析仪、富勒醇昂星、双层石墨烯、石墨烯昂星、油橄榄油荷、石墨烯粉体、荧光光谱仪、工业熔喷布、氧化石墨烯、氟化石墨烯、石墨烯薄膜、石墨烯浆料、水分测定仪、单层石墨烯、辅助激光解、水凝胶原液、漫反射测试昂
- 主营：金纳米、三角片、麦芽糖、磺酸基化聚苯乙烯微球、羟丙基、ito薄膜、氮化钛、tio2纳米、碳粉tio2、修饰tio2、pd纳米笼、水溶伊红、纳米复合、磁性纳米、蛋白芯片、包硅金银、硅纳米线、包硅纳米、硅纳米管、螯合树脂、油溶性银、复合材料、薄膜定制、纳米粒子
- 主营：热硫化胶粘剂、桥梁支座用胶
- 主营：垫片介子华司、pvcpcpetpmma、模切阻燃防火、电子电器机器
- 主营：POE、ABS、PP、PE、EVA