光化学合成P(DMAA-co-MMA)/Nano-SiO2复合水凝胶及其性能研究

doi:10.7517/j.issn.1674-0475.2007.06.436

影像科学与光化学 ›› 2007, Vol. 25 ›› Issue (6): 436-444.DOI: 10.7517/j.issn.1674-0475.2007.06.436

光化学合成P(DMAA-co-MMA)/Nano-SiO₂复合水凝胶及其性能研究

刘晓暄^1,2, 王洪波², 白迎坤², 吴光国²

1. 广东工业大学, 材料与能源学院高分子材料与工程系, 广东, 广州, 510006;
2. 汕头大学理学院, 化学系, 广东, 汕头, 515063

收稿日期:2007-01-11 修回日期:2007-06-10 出版日期:2007-11-23 发布日期:2007-11-23
通讯作者: 刘晓暄,E-mail:p_xxliu@yahoo.com.cn.
基金资助:
国家自然科学基金(20474036);教育部科学技术重大研究项目(02114);广东省自然科学研究项目(021241)资助

Photochemical Synthesis and Characterization of P(DMAA-co-MMA)/Nano-SiO₂ Complex Hydrogels

LIU Xiao-xuan^1,2, WANG Hong-bo², BAI Ying-kun², WU Guang-guo²

1. Department of Polymeric Materials and Engineering, College of Material and Energy, Guangdong University of Technology, Guangzhou 510006, Guangdong, P. R. China;
2. Department of Chemistry, College of Science, Shantou University, Shantou 515063, Guangdong, P. R. China

Received:2007-01-11 Revised:2007-06-10 Online:2007-11-23 Published:2007-11-23

摘要/Abstract

摘要： 以N,N-二甲基丙烯酰胺(DMAA)及甲基丙烯酸甲酯(MMA)为单体,Irgacure 2959为光引发剂,N,N′-二甲基双丙烯酰胺(Bis)为交联剂,利用紫外光引发自由基聚合制备了聚N,N′-二甲基丙烯酰胺(PDMAA)及P(DMAA-co-MMA)水凝胶,并通过加入少量表面改性后的纳米SiO₂对该水凝胶进行改性,制得了P(DMAA-co-MMA)/纳米SiO₂复合水凝胶,用FT-IR和SEM对产物进行了表征,同时研究该复合凝胶的溶胀动力学、消溶胀动力学、pH值响应性、离子强度等.该方法简便、快捷,大大缩短了聚合时间,合成过程仅需2-3 min.

关键词: 聚N,N-二甲基丙烯酰胺, 温敏性水凝胶, 纳米SiO₂, pH值敏感性

Abstract: Poly (N,N′-dimethylacrylamide) and P (DMAA-co-MMA) copolymer hydrogels have been prepared by the photochemical synthesis,the process of photo-polymerization was completed within 3 minutes.P (DMAA-MMA)/nano-SiO₂ complex hydrogels were prepared by the radical graft copolymerization of N,N′-dimethylacrylamide and a bit of MMA onto the surface of nano-SiO₂ particles whose surface were modified.Irgacure 2959 was used as photo-initiator and N,N′-methylene bisacrylamide (Bis) was used as the cross-linking agent.The products were characterized by FT-IR and SEM.Swelling dynamics,water release behavior,ionic strength sensitive and pH-sensitive performances of the hydrogels were discussed.

Key words: poly (N,N′-dimethylacrylamide), temperature-sensitive hydrogels, nano-SiO₂, pH-sensitive

中图分类号:

刘晓暄, 王洪波, 白迎坤, 吴光国. 光化学合成P(DMAA-co-MMA)/Nano-SiO₂复合水凝胶及其性能研究[J]. 影像科学与光化学, 2007, 25(6): 436-444.

LIU Xiao-xuan, WANG Hong-bo, BAI Ying-kun, WU Guang-guo. Photochemical Synthesis and Characterization of P(DMAA-co-MMA)/Nano-SiO₂ Complex Hydrogels[J]. Imaging Science and Photochemistry, 2007, 25(6): 436-444.

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光化学合成P(DMAA-co-MMA)/Nano-SiO₂复合水凝胶及其性能研究

Photochemical Synthesis and Characterization of P(DMAA-co-MMA)/Nano-SiO₂ Complex Hydrogels

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