调糖醇是用酸对奇托进行塑化
Holli R Scott1, Connor J Pearson1, Logan C Ealley1
1Department of Chemistry and Biochemistry, James Madison University, Harrisonburg, VA 22807, United States.
International journal of biological macromolecules
|January 23, 2024
概括
将酸添加到用甘油塑性化桑薄膜中,会产生复合物,限制了塑性化剂的有效性. 这种新的方法调整了基托桑.
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:
- 基于酸盐的生物塑料为传统塑料提供了可生物降解的替代品.
- 为特定应用优化素的特性,需要对材料特性进行精确控制.
- 了解塑化机制是定制基托膜性能的关键.
研究的目的:
- 通过添加酸来研究糖醇可塑化奇托桑薄膜的可调性.
- 为了探索酸,甘油和奇托之间的分子相互作用.
- 展示一种用于修改基托膜特性的新方法.
主要方法:
- 制备和表征基托桑薄膜,含有不同的甘油和酸含量.
- 使用减弱总反射度里埃转换红外光谱 (ATR-FTIR),热重量测量分析 (TGA),差分扫描热量测量 (DSC),动态机械分析 (DMA) 和扫描电子显微镜 (SEM) 的分析.
- 核磁共振 (NMR) 谱学用于研究分子相互作用.
主要成果:
- 甘油和酸形成中性复合物,降低了甘油在酸膜中的塑化效率.
- 含有甘 - 酸复合物的奇托桑薄膜表现出降低的灵活性和增加的热过渡温度.
- 在含有甘油-玻利酸复合体的薄膜中,SEM揭示了更均的形态.
- ATR-FTIR和NMR证实了复合物和D-葡萄糖胺之间的特定结相互作用.
结论:
- 酸盐的有效塑化依赖于塑化剂和聚合物之间的特定结相互作用.
- 甘-酸复合物的形成提供了一个简单而有效的策略来调整基托膜的物理特性.
- 这项研究为基托桑可塑化的基本机制提供了宝贵的见解.
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