聚合物 (乙烯基四甲酸) 废弃物的聚合物对聚合物的闭环再循环回收成可生物降解和可编程材料
Lidong Qin1,2, Xiaoxu Li1,2, Geng Ren1
1Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, 515031, China.
ChemSusChem
|February 27, 2024
概括
废弃的聚乙烯二甲 (PET) 被再循环加工成高价值,可生物降解的PEXT材料. 这种创新的聚合物对聚合物战略提供了增强的机械性能,并使闭环回收利用,解决塑料污染问题.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 可持续化学 可持续化学
背景情况:
- 聚乙烯二甲 (PET) 是一种广泛使用的,不可降解的塑料,造成严重的环境污染.
- 目前的PET回收方法往往涉及能源密集的脱聚合和单体净化,限制有效利用.
- 需要先进的回收策略来将废弃PET转化为有价值的高性能材料.
研究的目的:
- 为废弃PET开发一种新的聚合物对聚合物回收利用战略.
- 从PET创建高价值,可生物降解和可编程的材料.
- 为了证明PET废物管理的成本效益和环保意识的方法.
主要方法:
- 使用依赖于结的可逆转化反应.
- 引入商业上可用的X-单体,来源于阿里法酸二酸和二醇.
- 使用现有的工业设备进行完整的PET转换.
主要成果:
- 成功合成可编程聚乙烯基甲酸 (PEXT) 基材料.
- PEXT表现出卓越的机械性能,包括在断裂时的高延伸度 (3419.2%) 和性 (270.79 MJ m−3).
- 在机械,热和生物降解方面表现出量身定制的性能,适合各种应用.
结论:
- 开发的PEXT材料提供了一个可持续且具有成本效益的解决方案,用于回收PET废物.
- 由于PEXT的可编程性质和优越性质,可以用于形状记忆器件,透明薄膜和耐裂元件.
- 该战略促进了可生物降解类型的闭环回收利用,显示了环境保护的巨大潜力.
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