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通过肉桂酰氯与ε 己内酯改性丙烯酸酯间的酰基化反应,合成了一系列光敏性大单体(FAnC).以偶氮二异丁腈为引发剂,使FAnC与甲基丙烯酸在N,N 二甲基甲酰胺中进行自由基共聚反应,制备了具有光敏性的双亲无规 类接枝共聚物.以红外光谱、凝胶渗透色谱、紫外光谱、核磁共振和差示扫描量热等分析测试手段对共聚产物进行了表征,同时研究了FAnC中侧链长度等对反应产率的影响.研究结果表明,侧链长度对产率的影响很大,随侧链长度的增加产率降低.考察了单体配比对共聚物的相对分子质量和玻璃化转变温度的影响.结果表明,随着单体中FAnC含量的增加,数均相对分子质量升高而玻璃化转变温度下降.光敏性无规 类接枝共聚物可以在选择性溶剂中进行自组装,得到纳米级的聚合物胶束.
A series of photosensitive macromonomers (FAnC) were synthesized by the acylation reaction of cinnamoyl chloride and ε-caprolactone-modified acrylates. Azoisobutyronitrile was used as initiator to make FAnC react with methacrylic acid in N , N-dimethylformamide to prepare a photosensitive amphiphilic graft copolymer with infrared spectrum, gel permeation chromatography, UV spectroscopy, nuclear magnetic resonance and differential scanning calorimetry The influence of the length of the side chain on the yield of the FAnC was also investigated by means of analysis and test.The results showed that the influence of the length of the side chain on the yield was great and the yield decreased with the increase of the side chain length The effects of monomer ratio on the relative molecular weight and glass transition temperature of the copolymers were investigated.The results showed that the number average molecular weight increased and the glass transition temperature decreased with the increase of the content of FAnC The random graft copolymer can be self-assembled in a selective solvent to obtain nano-sized polymer micelles.