生物聚合物组合物基于聚3-基酸) 和带有芳香环的线性聚氨-制备和性能评估
Beata Krzykowska1, Anna Czerniecka-Kubicka2, Anita Białkowska3
1Department of Organic Chemistry, Faculty of Chemistry, Rzeszów University of Technology, Powstańców Warszawy 6, 35-959 Rzeszów, Poland.
Polymers
|June 27, 2024
概括
这项研究通过与聚氨 (PU) 混合来增强聚3-基酸盐 (P3HB) 的性能. 添加10%的PU显著提高了热稳定性和机械强度,使P3HB适用于可生物降解的农产品.
科学领域:
- 聚合物科学与工程 聚合物科学与工程
- 材料科学 材料科学 材料科学
- 生物材料是一种生物材料.
背景情况:
- 聚3-基酸盐 (P3HB) 是一种生物降解的聚合物,具有潜在的应用,但热和机械性能有限.
- 带有芳香环的线性聚氨 (PU) 具有可调节的特性,可以提高P3HB的性能.
研究的目的:
- 为了研究将线性聚氨 (PU) 纳入聚3-基酸 (P3HB) 矩阵的效果.
- 评估P3HB-PU生物组合的兼容性,形态,热稳定性和机械性能.
- 确定最佳的PU含量,以提高P3HB的性能,用于农业应用.
主要方法:
- 化混合P3HB与不同重量百分比的PU (0-15重量%).
- 使用4,4'-二甲二酸和不同摩尔质量的聚乙烯糖醇 (400, 1000, 1500 g/mol) 合成聚氨.
- 使用富里埃变换红外光谱学 (FTIR),扫描电子显微镜 (SEM) 和微分扫描热量计 (DSC) 的表征.
主要成果:
- 随着PU含量的增加,P3HB-PU生物组合显示出更好的兼容性和改变的形态.
- 加入高达10%的PU增强了热稳定性,增加了降解温度.
- 机械性能有所改善,可以通过降低硬度和增加冲击强度来证明,在10%重量%的PU,特别是PU1000时,获得最佳结果.
结论:
- 聚氨的添加,特别是10重量%,显著提高P3HB的热和机械性能.
- 由此产生的P3HB-PU生物组合表现出更好的灵活性 (降低玻璃过渡温度) 和机械性能.
- 这些增强的生物成分适用于可生物降解,寿命短的农产品,满足加工要求.
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