2,5-法兰迪卡酸聚合物的增强强硬作用在聚基可再生纤维上
Giulia Fredi1, Edoardo Zonta1, Alessandro Dussin1
1Department of Industrial Engineering and INSTM Research Unit, University of Trento, Via Sommarive 9, 38123 Trento, Italy.
Molecules (Basel, Switzerland)
|June 28, 2023
概括
这项研究成功地将聚乙烯与聚二二二甲酸盐 (PPF) 和聚二二二二甲酸盐 (PBF) 混合. PBF显著增强了PLA的强度,而PPF和PBF都增强了纤维特性,显示了包装和织品的潜力.
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
- 复合材料 复合材料 复合材料
背景情况:
- 聚酸 (PLA) 是一种可生物降解的聚合物,其性和柔性受到限制.
- 聚基烯酸 (PAF),如聚乙烯2,5-基碳酸 (PPF) 和聚乙烯2,5-基碳酸 (PBF),作为混合物组件具有潜力.
- 了解混合物形态和界面特性对于性能增强至关重要.
研究的目的:
- 准备和表征聚乙烯/聚乙烯酸盐 (PLA/PAF) 混合物在散装和纤维形式.
- 研究PAF度和兼容性对混合物特性的影响.
- 评估PPF和PBF在提高PLA热力学性能方面的潜力.
主要方法:
- 制备PLA/PPF和PLA/PBF混合物 (0-20重量%的PAF).
- 使用Joncryl (J) 的兼容性.
- 使用机械测试 (拉力测试),热分析和扫描电子显微镜 (SEM) 进行表征.
主要成果:
- 与Joncryl的兼容性改善了界面粘附性,并在不混合混合物中减少了域大小.
- 与PLA/PBF混合物不同的是,PLA/PBF混合物在散装时表现出显著的硬化 (在破碎时延伸高达55%),与PLA/PPF混合物不同.
- 纤维样本显示,随着PAF含量的增加,弹性模量和机械强度有所改善,由于微观结构变化,破裂时应变率大幅增加 (高达455%).
结论:
- 聚乙烯2,5-基碳酸盐 (PBF) 有效地使聚乙烯 (PLA) 在散装形式变得更硬.
- 无论是PPF还是PBF,都提高了PLA纤维的机械性能,特别是在更高的吸收速度下.
- 这些PLA/PAF混合物显示出在包装和织行业的先进应用的巨大潜力.
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