纺织学报 ›› 2021, Vol. 42 ›› Issue (10): 1-7.doi: 10.13475/j.fzxb.20210604807
• 纺织科技新见解学术沙龙专栏: 纤维原液着色关键技术及其产品 • 下一篇
JIN Hong1, ZHANG Yue1,2, ZHANG Yumei1,2(), WANG Huaping1,2
摘要:
为探索原液着色法制备Lyocell纤维过程中颜料对溶剂N-甲基吗啉-N-氧化物(NMMO)稳定性的影响,针对传统实验分析测试方法的局限性,采用分子模拟计算的方法研究了金属氧化物、碳材料、有机分子晶体三大类代表性颜料表面与NMMO之间的相互作用,根据NMMO分子中N—O键的平衡键长变化以及O—N—C键键角的变化,说明NMMO水溶液在二氧化钛、碳黑、颜料红、靛蒽醌颜料存在下,化学结构基本不变;而在三氧化二铁、酞菁铜颜料存在的情况下,N—O键的平衡键长明显变长,存在化学键断裂的风险,且这一结果与已有的实验结果相吻合,并且说明分子模拟方法可快速预判颜料对NMMO稳定性的潜在影响。
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