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聚乙烯甲酸-联合甲酸):一种类似于PBAT但具有快速水解降解的塑料

Lizheng Wang¹, Zhu Tu¹, Jiaming Liang¹

¹State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory of Polymer Science and Engineering, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China.

Journal of hazardous materials

|April 23, 2024

概括

新的可生物降解聚,聚乙烯酸盐-联合甲酸盐 (PBOT),提供优越的屏障特性和与商业塑料相比的机械强度. 它的氧酸盐单元能够快速降解,使其成为一个有希望的短期生物降解材料.

科学领域:

聚合物科学聚合物科学
材料科学材料科学材料科学
环境科学环境科学

背景情况:

对全球塑料污染的日益关注推动了对先进生物降解材料的需求.
基于聚乙烯酸盐 (PBOx) 的共聚合物正在探索它们在应对这些环境挑战方面的潜力.
将芳香单元纳入PBOx可以增强材料性能.

研究的目的:

合成和表征不同成分的聚乙烯氧沙酸-协同甲酸 (PBOT).
评估PBOT的机械和屏障特性,特别是PBOT-47.
研究PBOT共聚合物的降解机制.

主要方法:

聚乙烯酸盐与芳香单元的共聚合,以制造PBOT.
机械测试 (拉力强度,破裂时的延长) 的PBOT-47和商业聚乙烯基酸盐-co-terephthalate (PBAT-47).
气体和水蒸气的透度测量.
实验和理论研究以阐明水解机制.

主要成果:

PBOT-47表现出卓越的机械性能,破裂时延长1160%和拉伸强度超过30MPa,与PBAT-47竞争.
与PBAT-47相比,PBOT-47的H2O,CO2和O2的透系数明显较低,这表明屏障性能优越.
氧酸盐单元的水解性质促进了快速降解,将PBOT定位为短期可降解材料.

结论:

PBOT,特别是PBOT-47,代表了与PBAT等传统可生物降解塑料的可行替代品.
增强的屏障特性和可调节的PBOT降解率为特定应用提供了优势.
对PBOT的进一步研究可以为塑料污染的可持续材料解决方案做出贡献.

关键词:

水解是指水解过程中的水解.类似于PBAT的PBAT.这是一个PBOx.聚乙烯 (乙烯氧沙酸-联合甲酸)

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