含肉桂酰氧基光敏性单体的合成及表征

化工论文编号:HG152  论文字数:6899,页数:22

目  录
中文摘要 I
英文摘要 II
目  录 III
1 绪论 1
2 实验部分 4
 2.1 实验原料 4
 2.2 含肉桂酰氧基光敏性单体的制备 4
 2.3 含肉桂酰氧基光敏性单体的表征 5
3.结果与讨论 7
 3.1 产物结构的确认 7
 3.2 各种实验条件对反应的影响 12
4 结论 15
致  谢 16
参考文献 17

摘要：形状记忆材料是一类对外界刺激具有敏感性的智能材料，若在高分子材料中引入发色基团，在光照作用下，发色基团发生光致异构化反应（如顺-反异构），从而完成形状的记忆。本论文以肉桂酸甲酯和二乙醇胺为原料，以甲醇钠为催化剂，合成了新的功能性内酯单体——-甲基--肉桂酰氧基--戊内酯，并通过FTIR、NMR、MS、元素分析等测试分析方法，验证了其结构。在此基础上，考查了甲酯与二乙醇胺配比、催化剂用量、反应温度以及反应时间对反应转化率的影响，并得到了反应优化条件：甲酯与二乙醇胺1：2投料，甲醇钠用量为反应物总量的0.6%，反应温度为110℃，反应时间为5h。该优化条件下产物收率为73.8%，纯度为91%。

关键词：形状记忆；光致；肉桂酰氧基；光敏性单体

Abstract: Shape memory materials are a kind of intelligent polymer with chromophore group which will undergo isomerization reactions (such as geometrical isomerism) in light, then possess the shape memory properties. In this thesis, methyl cinnamate and diethanolamine was catalyzed by sodium methylate.. The product was identified as -methyl--cinnamoyl--valerolactone with FTIR, NMR, MS and elemental analysis, etc. The influence of methyl/diethanolamine ratio, catalyst amount, reaction temperature and reaction time on the reaction conversion was investigated.  On this basis, the optimal reaction conditions were defined as follow: methylate/diethanolamine ratio was 1:2, sodium methoxide amount was 0.6% (total reactants), reaction temperature was 110 oC and the reaction time was 5 hours. The optimal yield of the reaction was 73.8%, and the purity of the product was 91%.

Keywords：Shape memory; light-induced; cinnamoyl group; photosensitive monomer