生物塑料生产和回收的最新趋势 使用聚酸甲酸共聚物
Andrés García1, Claudia Aguirre2, Andrés Pérez3
1Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Cuernavaca 62210, Morelos, Mexico.
Microorganisms
|November 27, 2024
概括
聚氨基酸盐 (PHAs) 是一种具有多样性应用的可生物降解生物塑料. 最近的进展集中在使用新的发酵策略和低成本材料生产P(3HB-co-3HV) kopo 聚合物,用于增强生物医学用途.
科学领域:
- 生物技术是生物技术.
- 聚合物科学 聚合物科学
- 微生物发酵 微生物发酵
背景情况:
- 聚酸酸 (PHAs) 是一种模仿石化塑料的细菌聚合物.
- 酸盐具有生物相容性和生物降解性,这对于医疗应用至关重要.
- P(3HB-co-3HV) kopo 聚合物表现出热弹性质,扩大了生物塑料的应用.
研究的目的:
- 审查聚酸 (PHA) 共聚合物生产和回收的最新趋势.
- 为了突出发酵策略和低成本基质的PHA合成的进步.
- 专注于用于生物医学应用的P(3HB-co-3HV) 生产.
主要方法:
- 对用于PHA生产的各种细菌菌株的审查 (例如,Cupriavidus necator,Halomonas sp. ) 的情况.
- 批量和料批量发酵技术的分析.
- 探索低成本基质,如蔬菜和水果废物.
- 研究新型微生物模型,包括甲性和性细菌.
- 对于PHA回收的下游加工策略的总结.
主要成果:
- 通过使用各种细菌物种和基质,成功生产了P(3HB-co-3HV).
- 开发改进的发酵策略,用于大规模的PHA合成.
- 新的微生物平台的出现,以提高PHA产量.
- 在回收方法的进步,以实现所需的共聚合物特性.
结论:
- 最近的发酵策略和低成本材料正在改善PHA共聚合物生产.
- 优化生产和回收方法是生物医学领域P(3HB-co-3HV) 的关键.
- 微生物模型和下游加工的持续研究将扩大PHA的应用.
相关概念视频
01:20Types of Step-Growth Polymers: Polyesters
2.2K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
2.2K
01:03Step-Growth Polymerization: Overview
3.4K
Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
Many natural and synthetic polymers are produced by...
Many natural and synthetic polymers are produced by...
3.4K
01:24Characteristics and Nomenclature of Copolymers
2.4K
Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...
2.4K
02:35Free-Radical Chain Reaction and Polymerization of Alkenes
7.7K
The conversion of alkenes to macromolecules called polymers is a reaction of high commercial importance. The structure of the polymer is defined by a repeating unit, while the terminal groups are considered insignificant. The average degree of polymerization represents the number of repeating units in the polymer molecule and is denoted by the subscript n.
7.7K
01:08Molecular Weight of Step-Growth Polymers
2.2K
Step growth polymerization involves bi or multifunctional monomers. Bifunctional monomers react to form linear step growth polymers, whereas multifunctional monomers react to form non-linear or branched polymers.
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...
2.2K
01:17Ziegler–Natta Chain-Growth Polymerization: Overview
3.2K
Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta...
3.2K