精选生物成分对细胞结构和刚性聚氨泡性质的影响
Aleksander Prociak1, Michał Kucała1, Maria Kurańska1
1Department of Polymer Chemistry and Technology, Faculty of Chemical Engineering and Technology, Tadeusz Kosciuszko Cracow University of Technology, Warszawska 24, 31-155 Krakow, Poland.
Polymers
|September 28, 2023
概括
新的刚性聚氨泡 (RPURFs) 经过改造,使用了基于油菜油的生物多聚合物. 这些生物聚合物改善了泡细胞结构,但没有显著改变密度或导热率等关键性质.
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
- 可持续材料 可持续材料
背景情况:
- 固态聚氨泡 (RPURF) 广泛使用,但依赖于石化原料.
- 从可再生资源开发可持续的替代品对于减少环境影响至关重要.
- 从植物油中提取的生物聚合物为更绿色的聚氨生产提供了一个有前途的途径.
研究的目的:
- 合成和表征油的新型生物多聚合物.
- 调查这些生物多聚合物对修饰RPURF细胞结构和特性的影响.
- 评估在RPURF中用生物基替代品取代石化聚的可行性.
主要方法:
- 生物多聚醇是通过环氧化和氧化环开启使用1-hexanol和1.6-hexanediol从兰油中合成的.
- 合成的生物聚合物被用于以不同比例替代RPURF中的石化聚合物的40%重量.
- 评估了发泡过程,细胞结构,物理和机械特性 (密度,细胞含量,导热率,压力强度),尺寸稳定性和脆性.
主要成果:
- 用生物多聚合物进行的修改通常通过减少细胞大小来改善细胞结构.
- 关键性质,如表面密度 (40-43 kg/m3),封闭细胞含量 (87-89%),导热率 (25-26 mW/m·K) 和尺寸稳定性 (<0.7%) 基本保持不变.
- 压缩强度各不相同,功能较高的生物聚合物表现更好,DMA证实强度降低,功能较低的生物聚合物含量增加.
结论:
- 草油基生物聚合物可以有效地修改RPURF,增强细胞结构.
- 这些生物聚合物提供了一个可持续的替代品,而不会对关键的泡特性产生重大影响.
- 生物聚合物的功能在改性RPURF的机械性能,特别是压力强度方面发挥着作用.
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