合成和优化基托和碳甲基纤维素基聚氨的分子量
Muhammad Asif Javaid1, Yousef M Alanazi2, De-Qiang Li3
1Department of Applied Sciences, National Textile University, Faisalabad, -37610, Pakistan.
International journal of biological macromolecules
|October 3, 2024
概括
研究人员使用素 (CSN) 和甲基纤维素 (CMC) 合成了高分子量聚氨 (PU). 该研究发现,结合CSN和CMC显著提高了聚合物的分子量,50:50的比例显示了最佳结果.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 生物材料是一种生物材料.
背景情况:
- 聚氨 (PU) 是多功能聚合物,具有多种应用.
- 酸盐 (CSN) 和碳素甲基纤维素 (CMC) 是生物相容的多糖类,具有聚合物修饰的潜力.
- 开发高分子量聚合物对于提高材料性能至关重要.
研究的目的:
- 通过混合物设计方法,使用奇托 (CSN) 和碳甲基纤维素 (CMC) 合成新型聚氨 (PU).
- 研究CSN和CMC比率对合成的PUs分子重量的影响.
- 优化配方,以获得高分子量聚合物.
主要方法:
- 来自异二酸盐 (IPDI) 和基终结聚乙烯的预聚合物的合成.
- 预聚合物的反应与CSN和CMC的不同比率,基于统计混合物设计.
- 使用富里埃变换红外光谱 (FTIR) 和核磁共振 (NMR) 进行结构确认.
- 使用凝透色谱 (GPC) 进行分子重量表征.
主要成果:
- CMC和CSN之间的相互作用显著增加了合成的PU的分子量 (p值=0.006).
- 差异分析 (ANOVA) 表明,混合物设计模型解释了分子重量的98%的变化.
- 与基样 (PUS-1,CMC:CSN比率为1.00:0.00) 相比,PUS-3配方 (CMC:CSN比率为0.50:0.50) 的分子量增加了27.9%.
结论:
- CSN和CMC之间的协同作用有效地提高了聚氨的分子量.
- 统计混合物设计是优化高分子量聚合物混合物的合成的一个有价值的方法.
- 开发的基于CSN-CMC的PU显示出对由于分子重量增加而需要增强材料性能的应用有希望.
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