由环氧功能化酸盐增塑剂实现的共适应性网络,用于增强的3D打印聚3-基酸-co-4-基酸) 生物塑料
Xunda Hu1, Shiyan Sun1, Yunxuan Weng1
1Department of Materials Science and Engineering, Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing Technology and Business University, Beijing 100048, China.
International journal of biological macromolecules
|June 8, 2025
概括
新型反应性增塑剂通过结合化学交联和物理纠来增强聚3-基酸-co-4-基酸 (P34HB) 生物塑料. 这提高了先进的生物聚合物应用的热稳定性,机械性能和可加工性.
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
- 生物塑料工程 生物塑料工程
背景情况:
- 高性能聚3-基酸-co-4-基酸) (P34HB) 生物塑料在脆性和加工窗口上表现出限制.
- 现有的塑化剂往往缺乏足够的热稳定性和迁移抵抗性.
研究的目的:
- 为P34HB.开发基于酸盐的新型反应性可塑剂.
- 提高P34HB生物塑料的机械性能,热稳定性和可加工性.
- 通过共价交联和物理纠来研究塑化机制.
主要方法:
- 三种反应性酸盐衍生物的合成:TE1B2,TE2B1和TE3,TE3具有多个环氧基.
- 包括热稳定性 (Td-10%),迁移电阻和机械测试 (破裂时的延伸,拉力强度) 在内的全面表征.
- 扫描电子显微镜 (SEM) 用于分析分子结构和应力消散.
- 风湿学分析以评估剪切稀释行为和弹性.
主要成果:
- 与tributyl酸盐 (TBC) 相比,TE3表现出优越的热稳定性 (275.3°C) 和迁移抗性 (<1%的质量损失).
- TE3显著提高了机械性能,在断裂时实现了51.2%的延伸和15.8MPa的抗拉强度.
- 通过环氧-碳素/基反应和由PEGDE段进行拓纠的共价交联得到证实.
- 抑制了球状质的形成,并建立了压力分散网络,使削稀释行为能够保持高频弹性,用于结沉积建模 (FDM).
结论:
- 新型反应性增塑剂TE3有效地克服了P34HB生物塑料中的强度-柔性权衡.
- 化学交联和物理纠的协同战略为先进的生物聚合物设计提供了一个新的途径.
- 这种方法为改善材料性能提供了对联的可塑化和网络动态的见解.
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