用于增强聚 (丁烯基酸盐-联合甲酸盐) 的西兰胺基化:分子设计和相互作用优化优化
Yanjun Chen1, Jie Dai2, Xin Shen2
1College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China; National Engineering Research Center for Biotechnology, Nanjing 211816, China.
Carbohydrate polymers
|December 23, 2023
概括
修改后的西兰 (XCi) 增强了聚乙烯基甲基甲酸盐 (PBAT) 复合材料,提供了优越的机械性能和更高的玻璃过渡温度. 这些生物质衍生填充剂为传统塑料提供了可持续的替代品.
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:
- 聚乙烯酸甲甲酸盐 (PBAT) 复合材料使用生物质填充剂作为非生物降解塑料的可持续替代品.
- 克西兰衍生物被探索为PBAT复合材料中的增强剂.
研究的目的:
- 用 cinnamoyl 组修改 xilan,以产生 xilan cinnamates (XCi),以提高 PBAT 复合物的性能.
- 研究XCi结构和负载对PBAT复合材料性能的影响.
主要方法:
- 通过 cinnamoylation 来修改西兰,以控制替代度 (DS) 和疏水性.
- 将XCi填充剂 (30-50重量%) 融化成PBAT.
- 使用NMR,SEM和机械测试 (拉伸强度,破裂时延长) 进行表征.
- 分子动力学模拟来分析填充剂-矩阵相互作用.
主要成果:
- 西兰 cinnamates (XCi) 呈现受控的DS (0.55-1.89) 和增加的玻璃过渡温度 (146.5-175.0 °C).
- 含有40 wt% XCi (DS 0.97) 的PBAT复合材料显示出增强的拉伸强度 (19.4 MPa) 和破裂时的延伸 (330.9%).
- 改善了XCi和PBAT之间的兼容性和分子相互作用,导致Tg增加 (-34.5至-1.8°C) 和优越的机械性能.
结论:
- 锡兰的 cinnamoylation 有效地提高了其与PBAT的兼容性.
- 设计的西兰衍生物 (XCi) 作为PBAT复合材料的高性能填充剂.
- 这种方法为开发先进,可持续的聚合物复合材料提供了一条途径.
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