通过酸无水化的化,调整点膜的疏水性能和热稳定性
Huili Zhang1, Zhiwei Fan1, Dandan Peng1
1College of Chemistry and Materials Engineering, National Engineering & Technology Research Center of Wood-Based Resources Comprehensive Utilization, Zhejiang A & F University, Hangzhou 311300, China.
International journal of biological macromolecules
|July 14, 2024
概括
用乙酸 anhydride 修改点膜可以增强它们的特性. 化pectin薄膜表现出改善的疏水性,机械强度和热稳定性,使它们适合各种应用.
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:
- 素是一种植物多糖,由于丰富的基和基群,具有很高的水亲和力,限制了其薄膜应用.
- 调节pectin的特性对于扩大其在材料科学中的应用至关重要.
研究的目的:
- 通过用乙酸 anhydride 以乙酸 anhydride 以乙酸 anhydride 以乙酸 anhydride 以乙酸 anhydride 以乙酸 anhydride 以乙酸 anhydride 用于修饰膜.
- 为了研究不同酸无水化物度对PEC薄膜特性的影响.
主要方法:
- 使用不同度的乙 anhydride,对pectin进行化.
- 化pectin (E-PEC) 薄膜的特性包括接触角度,拉力强度,破裂时的延长,透明度,水蒸气传导率,TGA和DSC.
主要成果:
- 证实了酸无水化物成功地移植到pectin上.
- E-PEC-0.25薄膜显示出最高的接触角度 (103.46°) 和抗拉强度 (33.44 MPa).
- E-PEC-0.1薄膜实现了最高的化度 (0.94),破裂时的延长 (21.11%),以及最低的水蒸气传递率 (0.56 g·mm/{m2·h·kpa)).
- 在化膜中观察到增强的热稳定性.
结论:
- 乙无水化化有效地提高了膜的疏水性,机械强度,屏障性能和热稳定性.
- 优化乙 anhydride 度提供了一种可行的策略,用于为特定应用量身定制膜性能.
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