羟基烷酸
聚酯纤维
生物塑料
生物降解
聚羟基丁酸酯
材料科学
下游加工
制浆造纸工业
聚合物
生化工程
废物管理
化学
有机化学
复合材料
工程类
细菌
生物
生物化学
遗传学
作者
Rajendran Muthuraj,Oscar Valerio,Tizazu H. Mekonnen
标识
DOI:10.1016/j.ijbiomac.2021.07.143
摘要
Developing renewable resource-based plastics with complete biodegradability and a minimal carbon footprint can open new opportunities to effectively manage the end-of-life plastics waste and achieve a low carbon society. Polyhydroxyalkanoates (PHAs) are biobased and biodegradable thermoplastic polyesters that accumulate in microorganisms (e.g., bacterial, microalgal, and fungal species) as insoluble and inert intracellular inclusion. The PHAs recovery from microorganisms, which typically involves cell lysis, extraction, and purification, provides high molecular weight and purified polyesters that can be compounded and processed using conventional plastics converting equipment. The physio-chemical, thermal, and mechanical properties of the PHAs are comparable to traditional synthetic polymers such as polypropylene and polyethylene. As a result, it has attracted substantial applications interest in packaging, personal care, coatings, agricultural and biomedical uses. However, PHAs have certain performance limitations (e.g. slow crystallization), and substantially more expensive than many other polymers. As such, more research and development is required to enable them for extensive use. This review provides a critical review of the recent progress achieved in PHAs production using different microorganisms, downstream processing, material properties, processing avenues, recycling, aerobic and anaerobic biodegradation, and applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI