基于粉的交联片的制造和提高灵活性
Ji-Hyun Cho1, Kwang-Hyun Ryu1, Hyun-Joong Kim1,2
1Laboratory of Adhesion & Bio-Composites, Department of Agriculture, Forestry and Bioresources, Seoul National University, Seoul 08826, Republic of Korea.
Biomacromolecules
|November 6, 2024
概括
研究人员增强了本地粉.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 生物材料是一种生物材料.
背景情况:
- 原生粉是一种可再生的,可生物降解的聚合物,具有脆性和水友性等局限性.
- 这些特性限制了其在先进材料应用中的使用.
- 开发改性粉基材料对于可持续的替代品至关重要.
研究的目的:
- 通过化学修饰来克服本土粉的限制.
- 为了合成和描述与聚二胺交联的二甲基粉 (DAS).
- 调查交叉链接对材料性能的影响.
主要方法:
- 原生粉被转化为二甲基粉 (DAS).
- 通过伊米因键,DAS与杰法胺聚二胺 (D-2000,D-400,D-230) 交叉连接.
- 分析了机械 (抗拉强度,延伸),热 (Tg) 和结构 (XRD) 性能.
主要成果:
- 交叉链接的DAS/杰法胺薄膜显示出更好的灵活性和性.
- 最佳条件产生了高拉伸强度 (62.9 MPa) 和破裂时的延长 (126.2%).
- 增加的交叉连接降低了结晶性和降低了玻璃过渡温度 (Tg).
结论:
- 将粉化学修改为DAS,然后进行交叉链接,可显著提高材料的性能.
- 调整聚乙烯二胺的交联密度和分子量,可以控制片的性能.
- 这种方法为可持续,高性能粉基生物聚合物材料提供了可行的途径.
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