在聚乳酸混合纤维中聚乙烯糖酸添加剂的作用通过化蓝化工艺混合纤维
Benchamaporn Tangnorawich1,2, Areerut Magmee3, Nanjaporn Roungpaisan4
1Department of Physics, Faculty of Science and Technology, Thammasat University, Khlong Luang 12120, Thailand.
Molecules (Basel, Switzerland)
|October 28, 2023
概括
在聚乳酸 (PLA) 纤维中添加聚乙烯酸盐 (PBS) 增强了拉伸强度和结晶性. 然而,增加的PBS含量减少了破裂时的延长,并影响了PLA结晶温度.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 复合材料 复合材料 复合材料
背景情况:
- 聚乳酸 (PLA) 是一种可生物降解的聚合物,具有潜在的应用,但机械性能有限.
- 聚乙烯酸盐 (PBS) 是另一种可生物降解的聚,以其灵活性和可加工性而闻名.
- 开发PLA/PBS复合纤维可以利用这两种聚合物的优势来创建具有改进特性的材料.
研究的目的:
- 调查不同酸聚乙烯 (PBS) 含量对聚乳酸 (PLA) /PBS复合纤维的物理,热,机械和化学性能的影响.
- 探索化处理的潜力,以制造PLA/PBS纳米纤维.
- 了解PBS如何影响PLA纤维的形态,结晶行为和机械性能.
主要方法:
- 使用融化吹风工艺制备PLA/PBS混合纤维.
- 由此产生的纳米纤维的形态分析.
- 差分扫描热量计 (DSC) 用于分析热性质,特别是结晶温度.
- 通过X射线衍射 (XRD) 来确定PLA组件的结晶性.
- 拉力测试用于评估机械性能,包括拉力强度和破裂时的延伸.
主要成果:
- 造加工成功地产生了PLA/PBS纳米纤维,在添加PBS后具有不规则的形状和更光滑的表面.
- 增加PBS含量降低了PLA的结晶温度,这表明对其结晶动力学有影响.
- X射线衍射证实,PBS添加增加了复合纤维中PLA成分的整体结晶性.
- 拉力测试显示,随着PBS的加入,拉力性能得到了增强,但在断裂时延伸显著减少.
结论:
- 加入聚乙烯酸盐 (PBS) 修改了形态,并增强了聚乳酸 (PLA) 纤维的拉伸性能和结晶性.
- 添加PBS会影响PLA的结晶行为,降低其结晶温度,同时增加整体结晶性.
- 虽然PBS提高了拉伸强度,但它显著降低了破裂时的延伸,这表明在机械性能方面需要考虑特定应用的权衡.
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