化聚3-基酸盐/聚3-基酸盐--4-基酸盐的生产和特征) 混合单丝纤维
Sabrina Kopf1, Andrew Root2, Ivo Heinmaa3
1Swedish Centre for Resource Recovery, Faculty of Textiles, Engineering and Business, University of Borås, 501 90 Borås, Sweden.
ACS omega
|July 1, 2024
概括
这项研究探讨了化的聚3-基酸/聚3-基酸-co-4-基酸混合纤维. 细纤维丝表现出独特的晶体结构和改进的机械性能,这表明了织应用的潜力.
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
- 生物材料工程 生物材料工程
背景情况:
- 聚3-基酸盐 (PHB) 和其共聚合物是生物降解的聚合物,具有各种应用潜力.
- 造是制造织品和其他用途的聚合物纤维的关键过程.
- 了解基于PHB的纤维的结构属性关系对于优化其性能至关重要.
研究的目的:
- 为了研究PHB/PHB-co-4HB混合物的融潜力.
- 分析线圈直径对电线属性的影响.
- 为了评估产生的纤维的机械和水解稳定性.
主要方法:
- 在PHB/PHB-co-4HB混合物中使用0.2mm和0.5mm直径的活塞机进行融.
- 差分扫描热量计 (DSC) 用于热分析.
- 动态机械热分析 (DMTA) 和对机械性能进行拉伸测试.
- 在酸盐缓冲盐水 (PBS) 溶液中进行水解稳定性测试.
主要成果:
- 导线属性随着横截面积的显著变化,受线圈直径的影响.
- 比较细细的细丝 (0.2毫米) 与较粗的细丝 (0.5毫米) 和整洁的PHB相比,显示出不同的化行为和晶体结构.
- 与较粗的纤维丝 (11.7 MPa,12.3%) 相比,较细的纤维丝具有更高的抗拉强度 (21.5 MPa) 和破裂时的延伸度 (341%).
- 在PBS中,经过7周的水解降解后,较薄的细丝在断裂时表现出减少的延长.
结论:
- PHB/PHB-co-4HB混合物显示出融成纤维的可能性.
- 螺旋网直径在确定丝形态,晶体结构和机械性能方面发挥着至关重要的作用.
- 进一步优化加工条件可以提高用于织应用的丝特性.
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