增强型立体复杂晶体聚乳酸在化加工的化分子双组分纤维配置中
Renhai Zhao1, Shunzhong Cai1, Yintao Zhao1
1Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China; Shandong Center for Engineered Nonwovens, Qingdao University, Qingdao 266071, China.
International journal of biological macromolecules
|September 29, 2023
概括
这项研究增强了使用双组分融线在聚乳酸 (PLA) 纤维中的立体复杂晶域形成. 该过程产生了对齐的多晶PLA纤维,具有独特的形态和改进的特性.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 晶体学 晶体学是指结晶学.
背景情况:
- 聚乳酸 (PLAs) 的立体复合是先进材料性质的关键.
- 对于PLA立体复合纤维形成的传统方法面临局限性.
- 了解化处理对于可扩展的PLA立体复合体生产至关重要.
研究的目的:
- 通过融来探索和增强在双组件PLA纤维中的立体复杂晶域形成.
- 为了研究由此产生的多晶形态和晶体对齐.
- 分析分子量和后处理对纤维结构和特性的影响.
主要方法:
- 侧对侧和外套核心双组件融织的多L乳酸 (PLLA) 和多D乳酸 (PDLA).
- 纤维形态,结晶性和晶状片结构的表征.
- 评估不同分子量配对和固态回火的影响.
主要成果:
- 实现了多晶形态,沿纤维的纵向方向对齐的晶体区域.
- 在融化旋转过程中,在介面阶段表现出立体复合体的形成,导致均的晶体片.
- 与基于溶液的方法相比,观察到纤维形态和结晶度的明显差异.
- 确定分子重量对于结构发展和材料性能至关重要.
- 经确认的固态回火增强了同晶性,而不会改变立体复杂分布.
结论:
- 双元件融织是一种有效的生产对齐立体复合PLA多晶纤维的方法.
- 定制PLLA和PDLA的分子量对于控制纤维结构和特性至关重要.
- 造纤维具有独特的形态和结晶性,与溶液加工的对应物不同.
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