闭环循环回收维尼洛基尿玻璃化物
Youwei Ma1,2, Xuesong Jiang2, Zixing Shi2
1Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700, Fribourg, Switzerland.
Angewandte Chemie (International ed. in English)
|July 13, 2023
概括
从二聚乙烯基醇乙酸盐 (aPEG) 衍生出的乙烯酸 (VU) 玻璃制剂可以使用水去聚合. 这种方法实现了aPEG的高回收,使可持续塑料的有效闭环回收成为可能.
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:
- 开发节能塑料脱聚合是循环塑料经济的关键.
- 玻璃模具有可回收聚合物网络的潜力.
- 基于乙酸盐的乙性尿 (VU) 是一种具有可调节性质的玻璃剂.
研究的目的:
- 为了证明高效的脱聚合和回收的聚合物组件从乙烯基尿 (VU) 玻璃.
- 调查控制脱聚合率和材料性能的因素.
- 展示这些材料在闭环回收利用中的潜力.
主要方法:
- 使用双聚乙烯糖乙酸 (aPEG) 和三2-氨基乙烯) 胺,合成乙烯基尿 (VU) 玻璃体.
- 使用水在中等温度下进行脱聚合研究.
- 作为温度,水含量和aPEG分子重量的函数的脱聚合率的分析.
- 由此产生的玻璃材料的机械性质的表征.
主要成果:
- 通过水辅助脱聚合,通过水辅助脱聚合实现了aPEG的近乎定量回收 (≈98%).
- 通过调整温度,水量和aPEG分子量来证明对脱聚合率的控制.
- 通过修改aPEG分子量和起始材料组成来定制机械性能 (软,坚固,脆).
结论:
- 基于aPEG的VU玻璃剂可以很容易地准备,并使用水有效地去聚合.
- 易于脱聚和高回收的aPEG支持其在闭环循环回收系统的使用.
- 这些发现有助于设计具有增强可回收性的先进聚合物材料.
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