一种新型水溶性感光聚合物的合成及其光交联膜的溶胀行为
首发时间:2012-04-10
摘要:合成了N-丙烯酰-N,-肉桂哌嗪(ACP)与丙烯酸(AA)的共聚物聚(N-丙烯酰-N′-肉桂哌嗪-共聚-丙烯酸)(P(ACP-co-AA))。紫外吸收和傅立叶红外光谱跟踪结果表明:ACP及其共聚物P(ACP-co-AA)分别具有较好的光敏性和光交联性。在光照约30min后,不同组成共聚物膜的光交联基本完成,交联膜在酸、碱水溶液中均可溶胀,在碱性中的溶胀率比在酸性中的溶胀率要大,pH=6~7时其溶胀率最小,表现出明显的pH敏感性。随光照时间的延长,肉桂基含量较高的共聚物交联膜在pH=9的溶液中的瞬间最大溶胀率出现较早,肉桂基含量较低的则较晚。
关键词: N-丙烯酰-N -肉桂哌嗪;聚(N-丙烯酰-N -肉桂哌嗪-共聚-丙烯酸);合成;光交联膜;溶胀行为
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Synthesis of new photosensitive and water-soluble copolymers and their photocrosslinking properties
Abstract:A new photo-monomer, N-acryl-N′-cinnamenylpiperazine (ACP), and its copolymers with acrylic acid (P(ACP-co-AA)) have been synthesized. The UV and FT-IR spectra showed that P(ACP-co-AA) have better photosensitivity and photocrosslinking properties. The swelling ratio (SR) of the photocrosslinking films of the P(ACP-co-AA) copolymers with different compositions is higher in the alkaline solution than in the acidic solution. The lowest SR occurred at pH=6–7, showing obvious pH-sensitivity. At pH=9, the instantaneous maximum SR of the copolymers with a higher content of cinnamenyl groups appeared earlier with prolonged irradiation time.
Keywords: N-acryl-N′-cinnamenylpiperazine poly(N-acryl-N′-cinnamenylpiperazine -acrylic acid);synthesis;photocrosslinking film swelling behavior
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