Reversible Cross-Linking of Aliphatic Polyamides Bearing Thermo- and Photoresponsive Cinnamoyl Moieties

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• 作者：Deniz Tunc ; Cedric Le Coz ; Michael Alexandre ; Philippe Desbois ; Philippe Lecomte ; Stephane Carlotti
• 刊名：Macromolecules
• 出版年：2014
• 出版时间：December 9, 2014
• 年：2014
• 卷：47
• 期：23
• 页码：8247-8254
• 全文大小：408K
• ISSN：1520-5835

文摘

Photosensitive polymers have gained strong attention in development of different polymeric systems for diverse applications. Particular attention is paid to polymers with cinnamoyl groups either in polymer backbone or in pendent position owing to their excellent photoreactivity and thermoreactivity upon UV light irradiation or heating. This work aims at synthesizing a novel photo- and thermosensitive aliphatic polyamide by anionic ring-opening copolymerization of 蔚-caprolactam and 伪-cinnamoylamido-蔚-caprolactam. The photochemical reversible cross-linking of solutions and thermal cross-linking of spin-coated films made up of these new cinnamoyl-functionalized polyamides were monitored by UV鈥搗is spectroscopy. These aliphatic polyamide copolymers were characterized by magic angle spinning solid-state NMR, and their thermal behaviors were studied by thermogravimetric analysis, differential scanning calorimetry, and dynamic mechanical analysis.