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Poly(3-Hydroxypropionate): a Promising Alternative to Fossil Fuel-Based Materials

机译：聚（3-羟基丙酸酯）：替代基于化石燃料的材料

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摘要

Polyhydroxyalkanoates (PHAs) are storage compounds synthesized by numerous microorganisms and have attracted the interest of industry since they are biobased and biodegradable alternatives to fossil fuel-derived plastics. Among PHAs, poly(3-hydroxypropionate) [poly(3HP)] has outstanding material characteristics and exhibits a large variety of applications. As it is not brittle like, e.g., the best-studied PHA, poly(3-hydroxybutyrate) [poly(3HB)], it can be used as a plasticizer in blends to improve their properties. Furthermore, 3-hydroxypropionic acid (3HP) is considered likely to become one of the new industrial building blocks, and it can be obtained from poly(3HP) by simple hydrolysis. Unfortunately, no natural organism is known to accumulate poly(3HP) so far. Thus, several efforts have been made to engineer genetically modified organisms capable of synthesizing the homopolymer or copolymers containing 3HP. In this review, the achievements made so far in efforts to obtain biomass which has accumulated poly(3HP) or 3HP-containing copolymers, as well as the properties of these polyesters and their applications, are compiled and evaluated.
机译：聚羟基链烷酸酯（PHA）是由许多微生物合成的存储化合物，由于它们是化石燃料衍生塑料的生物基且可生物降解的替代品，因此引起了业界的关注。在PHA中，聚（3-羟基丙酸酯）[聚（3HP）]具有出色的材料特性，并具有多种应用。由于它不像例如研究最好的PHA聚（3-羟基丁酸酯）[poly（3HB）]那样脆，因此可以在共混物中用作增塑剂以改善其性能。另外，认为3-羟基丙酸（3HP）可能成为新的工业构件之一，并且可以通过简单的水解从聚（3HP）获得。不幸的是，到目前为止，还没有天然生物积累聚（3HP）。因此，已经进行了一些努力来工程改造能够合成含有3HP的均聚物或共聚物的转基因生物。在这篇综述中，总结并评估了迄今为止为获得积累了聚（3HP）或含3HP共聚物的生物质所做的努力，以及这些聚酯的性能及其应用。

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