完全基于生物的交联粉油酸膜的合成和特性
Laura Boetje1, Xiaohong Lan1, Jur van Dijken1
1Zernike Institute of Advanced Materials, University of Groningen, Nijenbogh 4, 9747AG Groningen, The Netherlands.
Polymers
|June 10, 2023
概括
热固化 (HC) 和紫外线固化 (UVC) 有效地交联粉油酸膜. 热固化证明了最高的效率,显著提高了薄膜强度,并暗示了在包装和皮膜中取代化石燃料塑料的潜力.
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
- 可持续化学 可持续化学
背景情况:
- 粉油酸膜为传统塑料提供一种可生物降解的替代品.
- 交叉连接对于改善基于粉的材料的机械性能和稳定性至关重要.
研究的目的:
- 为了研究紫外线固化 (UVC) 和热固化 (HC) 对于交联粉油酸膜的有效性.
- 为了比较商业光启动器 (CPI) 和自然光启动器 (NPI) 在UVC中的效率.
- 评估不同固化方法对粉油酸盐薄膜物理和热性能的影响.
主要方法:
- 粉油酸薄膜 (替代度=2.2) 已准备好,并用CPI或NPI和没有启动器的HC接受UVC.
- 用同热重力测量分析,FTIR,凝含量,DSC和TGA来描述交联膜的特征.
主要成果:
- 所有固化方法 (HC,UVC与CPI,UVC与NPI) 都有效地交叉连接了膜,HC显示了最高的效率.
- 在所有方法中,最大薄膜强度显著增加,HC产生了最大的改善 (4.14到7.37 MPa).
- 增加的交叉连接导致DSC观察到的平坦化或消失的玻璃过渡温度 (Tg);NPI固的薄膜在固过程中呈现最小的降解.
结论:
- 热固化是交叉连接粉油酸膜的最有效方法,显著提高了它们的机械性能.
- 交叉连接的粉油酸膜表现出更好的强度和热稳定性,使它们成为替代化石燃料塑料在皮膜和包装等应用中的有希望的候选人.
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