来自消费后PET的生物基不和聚树脂
David Rubeš1, Jaromír Vinklárek2, Štěpán Podzimek1
1Institute of Chemistry and Technology of Macromolecular Materials, Faculty of Chemical Technology, University of Pardubice Studentská 573 532 10 Pardubice Czech Republic jan.honzicek@upce.cz.
RSC advances
|March 14, 2024
概括
这项研究展示了一种新方法,可以从回收的聚乙烯二甲 (PET) 废物中制造无烯不和聚树脂 (UP). 这些可持续树脂提供高机械强度和减少对环境的影响.
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) 废物对环境构成重大挑战.
- 传统的不和聚 (UP) 树脂通常依赖于烯,造成健康和安全风险.
- 在复合材料中,对可持续替代品的需求越来越大.
研究的目的:
- 合成无烯不和聚 (UP) 树脂,利用消费后的聚乙烯二甲 (PET) 废物.
- 为了研究合成的UP树脂与非烯反应性稀释剂的共聚合能力.
- 评估由此产生的硬化材料的机械性能和热特性.
主要方法:
- 用乙烯基甘对PET废物的糖解,然后用生物基的伊塔康酸进行凝结聚合.
- 使用甲基酸盐和伊塔科纳酸盐作为反应性稀释剂制备树脂.
- 室温氧化还原启动固化,然后是升温后固化.
- 使用动态机械分析 (DMA) 和标准化机械测试 (张力,曲,压缩) 的表征.
主要成果:
- 从PET废物中成功合成了具有反应性甲基功能的UP树脂.
- 已证明与非烯稀释剂,如二甲基伊他康酸 (DMI) 的共聚合.
- 通过含有DMI的配方实现了高最终屈曲强度 (161.4 MPa) 和压力收益率点 (131.3 MPa).
- DMI的低波动性解决了与烯有关的健康,安全和生态问题.
结论:
- 将PET废弃物再循环转化为高性能,无 styrene 的UP树脂是可行的.
- 生物基的伊塔康酸盐稀释剂可以制造可持续和坚固的复合材料.
- 这种方法为环保复合材料和PET废物管理提供了一个有希望的解决方案.
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