期刊文献+

多孔半互穿温敏水凝胶的制备及其性能研究 被引量:2

Synthesis and properties of porous semi-interpenetrating thermosensitive hydrogels
原文传递
导出
摘要 以N-异丙基丙烯酰胺(NIPAm)为单体,聚乙二醇(PEG)为致孔剂,聚甲基丙烯酸-β-羟乙酯(PHEMA)为第2网络物质,制备了多孔半互穿温敏水凝胶。考察了不同分子质量致孔剂(PEG1000、PEG1500、PEG2000)、致孔剂质量、交联剂BIS质量、PHEMA/NIPAm质量比对凝胶结构和性能的影响。并用FT-IR、SEM、DSC、BET和称重法对凝胶进行性能测试。结果表明,最佳制备条件为:m(PHEMA)/m(NIPAm)=0.25,BIS质量为单体总质量的2.67%,PEG分子质量为1 000~2 000,PEG质量为单体总质量的40%。凝胶孔径为10~20μm,室温20℃下20 min凝胶可以吸收60%以上水分,90 min可以达到溶胀平衡,50℃下10 min内失去90%以上的水分,其LCST在35.8℃左右。 By using N-isopropylacrylamide( NIPAm) as monomer,polyethylene glycol( PEG) as porogenic agent,poly( methylacrylic acid-beta hydroxy ethyl ester)( PHEMA) as second network substance,the thermosensitive porous semi-interpenetrating network hydrogels are prepared.Effects of different molecular weight porogenic agents( PEG1000,PEG1500,PEG2000),dosage of porogenic agent,crosslinker dosage and mass ratio of PHEMA/NIPAm on hydrogels structure and properties are investigated. The prepared hydrogels are characterized by FT-IR,SEM,DSC,BET and gravimetric method.The optimal preparation conditions are: m( PHEMA)/m( NIPAm) = 0. 25( weight ratio),crosslinker dosage accounting 2. 67% of total monomer,PEG molecular weight in the range of 1 000-2 000,and PEG dosage accounting 40% of total monomer. It is detected that pore sizes of hydrogels are 10-20 microns. At room temperature20℃,the hydrogels can absorb more than 60% of water in 20 minutes,and can reach swelling equilibrium in 90 minutes.The hydrogels can lose more than 90% of water at 50℃ in 10 minutes. The lower critical solution temperature is about 35. 8℃.
作者 杨毅 李丽霞 吕保和 陈园园 张鑫鑫 李川蔚 汪能 周到 YANG Yi LI Li-xia LV Bao-he CHEN Yuan-yuan ZHANG Xin-xin LI Chuan-wei WANG Neng ZHOU Dao(School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China)
出处 《现代化工》 CAS CSCD 北大核心 2017年第8期104-108,共5页 Modern Chemical Industry
基金 国家自然科学青年基金项目(51508233) 江苏省大学生创新创业训练项目(201610299060Y)
关键词 N-异丙基丙烯酰胺 聚甲基丙烯酸-β-羟乙酯 多孔半互穿网络 温敏性 孔洞结构 N-isopropylacrylamide poly(methylacrylic acid-beta hydroxy ethyl ester) porous semiinterpenetrating network temperature sensitivity macroporous structure
  • 相关文献

参考文献4

二级参考文献41

  • 1张建涛,黄世文,汪璐玲,卓仁禧.快速响应大孔聚(N-异丙基丙烯酰胺-co-丙烯酸)水凝胶的合成及表征[J].高等学校化学学报,2004,25(12):2370-2374. 被引量:16
  • 2刘锋,卓仁禧.水凝胶的制备及应用[J].高分子通报,1995(4):205-216. 被引量:61
  • 3秦爱香,吕满庚,刘群峰,张平.快速响应的聚(N-异丙基丙烯酰胺)水凝胶的合成及性能[J].高分子材料科学与工程,2006,22(5):54-57. 被引量:9
  • 4卢国冬,燕青芝,宿新泰,刘中清,葛昌纯.多孔水凝胶研究进展[J].化学进展,2007,19(4):485-493. 被引量:38
  • 5Chen J, Liu M Z, Liu H L, et ol. Synthesis and properties of thermo- and pH-sensitive poly (diallyldimethy lammonium chloride)/poly (N,N- diethylacrylamide) semi -IPN hydrogel [J]. Chemical Engineering Journal, 2010, 159(1-3): 247-256.
  • 6Guo B L, Gao Q Y. Preparation and properties of a pH/temperature-respon- sive carboxymethyl chitosan/poly(N-isopropylacrylamide)semi-IPN hydro- gel for oral delivery of drugs [J]. Carbohydrate Research, 2007, 342(16): 2416-2422.
  • 7Li L, Shan H, Yue C Y, et al. Thermally induced association and dissociation of methylcellulose in aqueous solutions[J]. Langmuir, 2002, 18:7291-7298.
  • 8Kazuto Kobayashi, Ching-i Huang, Timothy P. Lodge. Thermoreversible gelation of aqueous methylcellulose solutions[J]. Macromolecules, 1999, 32: 7070-7077.
  • 9Park J S, Park J W, Ruckenstein E. Thermal and dynamic mechanical analysis of PVA/MC blend hydrogels[J]. Polymer, 2001, 42:4271-4280.
  • 10Xiao C M, Geng N N. Tailored preparation of dual phase concomitant methylcellulose/poly (vinyl alcohol) physical hydrogel with tunable thermosensivity[J]. European Polymer Journal, 2009, 45: 1086-1091.

共引文献12

同被引文献20

引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部