Preparation and characteristics of photocrosslinkable hydrophilic polymer having cinnamate moiety
Preparation and characteristics of photocrosslinkable hydrophilic polymer having cinnamate moiety
复制标题
具有肉桂酸酯部分的光交联亲水聚合物的制备及性能
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
T. Matsuda
中科院分区：
文献类型：
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作者：
Y. Nakayama;T. Matsuda
用N，N-二甲基丙烯酰胺（DMAA）和甲基丙烯酸溴乙酯的共聚物与肉桂酸钾反应，合成了水溶性光敏聚合物。用400 W高压汞灯（λ > 280 nm）照射光敏polyDMAA膜以产生交联聚合物，其在水中溶胀。溶胀度受辐照时间和共聚物中肉桂酸酯含量的控制。较高的肉桂酰化和较长的辐照时间导致较高的交联聚合物的产率和较小的溶胀性。在λ = 254 nm处照射时观察到部分脱胶。凝胶化的优势，通过光二聚反应比传统的化学交联方法结合生物医学应用进行了讨论。John Wiley & Sons，Inc.
The reaction of copolymer of N,N-dimethylacrylamide (DMAA) and bromoethyl methacrylate with potassium cinnamate produced water-soluble photosensitive polymers. Photosensitive polyDMAA films were irradiated with a 400 W high-pressure mercury lamp (λ > 280 nm) to produce crosslinked polymers, which were swollen in water. The degree of swelling was controlled by the irradiation time and content of cinnamate moieties in copolymers. Higher cinnamoylation and longer irradiation time resulted in higher yield of crosslinked polymers and less swellability. Partial degelation upon irradiation at λ ∼ 254 nm was observed. The advantage of gelation via photodimerization over conventional chemical crosslinking methods is discussed in conjunction with biomedical applications. © 1992 John Wiley & Sons, Inc.