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纤维素羧酸钠基半互穿高吸水凝胶的温控溶胀效果 被引量:4

Thermo-tunable Swelling Effect of Cellouronic Acid Sodium-based Superabsorbent Hydrogels
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摘要 具有温控溶胀性的高吸水凝胶由于其独特的性能,如随环境温度微小变化,材料体积发生多种改变,在学术研究及工业应用领域都属于一种多用途、有前途的功能材料。纤维素羧酸钠(CAS)是一类通过纤维素选择性氧化反应得到的水溶性衍生物,但对其功能凝胶改性的研究鲜有报道。本工作以蔗髓为原料改性得到的CAS为线性聚合物,丙烯酰胺(AM)和二烯丙基二甲基氯化铵(DAC)为共聚单体,N,N'-亚甲基双丙烯酰胺(MBAM)为交联剂,采用序列合成法制得半互穿网络结构的CAS/聚合(AM-co-DAC)凝胶。利用红外光谱、X射线光电子能谱仪及扫描电镜对凝胶化学组成及表面形态进行表征,研究CAS、引发剂用量及介质性质对凝胶在不同温度作用下溶胀能力的影响。结果表明:制备的CAS基凝胶的溶胀度高且受温度控制;随着温度升高,溶胀度提升;溶胀能力及其温控灵敏性取决于凝胶的化学构成及溶液性质。 The high water-absorbent hydrogels with thermo-tunable swelling property represent a versatile and promising class of functional materials in both academic and industrial fields due to their unique characteristics,such as multifold change of volume in response to minute change in the ambient temperature.Cellouronic acid sodium(CAS)is a water-soluble cellulose derivative produced by a selective oxidation of cellulose,but its modification of functional hydrogels was less documented.Based on a sequential synthesis method,the copolymer network was firstly synthesized with acrylamide(AM)and diallyldimethylammonium chloride(DAC)as comonomers,N,N′-methylenebisacrylamide(MABM)as crosslin-ker.Then,linear polymer CAS obtained from bagasse pith,has been introduced into cross-linked poly(AM-co-DAC)to form thermo-sensitive semi-interpenetrating polymer networks(semi-IPNs).The chemical composition and morphology of hydrogel were characterized by FT-IR,XPS and SEM.The effects of CAS dosage,initiator charge and medium property on gel s swelling ability at various temperatures were also investigated.The results showed that the prepared CAS-based gels exhibited a high water-absorbency and temperature-tunable swelling property.The swelling degree enhanced with increasing ambient temperature.Both swelling ability and its thermo-sensitivity largely depended on the chemical structure of the semi-IPNs and the solvent property.
作者 高欣 韩全青 张恒 陈克利 GAO Xin;HAN Qunqing;ZHANG Heng;CHEN Keli(Pulp and Paper Engineering Research Center of Yunnan Higher Education,Chemical Engineering Faculty,Kunming University of Science and Technology,Kunming 650500)
出处 《材料导报》 EI CAS CSCD 北大核心 2019年第8期1416-1421,共6页 Materials Reports
基金 国家自然科学基金(51363013) 云南省教育厅资助性项目(2018js027) 云南省人才培养项目(KKSY201605058)~~
关键词 高吸水凝胶 纤维素羧酸钠 聚(丙烯酰胺-co-二烯丙基二甲基氯化铵) 温敏性 溶胀性能 superabsorbent hydrogel cellouronic acid sodium poly(acrylamide-co-diallyldimethylammonium chloride) thermo-sensitive swelling property
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  • 1尚宏周,刘建平,郑玉斌,常军,于淑娟,徐亮.阳离子聚丙烯酰胺类高聚物的研究进展[J].现代化工,2007,27(z1):118-121. 被引量:9
  • 2沈一丁,张宇.P(DMC-AM)高分子絮凝剂的制备及絮凝性能[J].精细化工,2005,22(8):607-610. 被引量:22
  • 3吴挡兰,方熠,陈日耀,郑曦,陈震.水溶液聚合高分子聚丙烯酰胺的研究[J].当代化工,2005,34(3):183-187. 被引量:7
  • 4HERBERT A G, BADEN-Baden. Process for the production of high molecular weight copolymers of diallylammonium monomers in solution: US, 5110883[P], 1992-05-05.
  • 5WANG L K. Some homo and copolymerization studies of dimethyldiallylammonium chloride[J]. Ind Eng Chem Product Res, 1997, 16:311-313.
  • 6INCHAUSTI I, SASIA P M, KATIME I. Copolymeriza-tion of dimethy-laminoethylacrylate-methyl chlo-ride and acrylamide in inverse emulsion[ J]. Journal of Materials Science, 2005, 40: 4833-4838.
  • 7David J M,Kuen Y L.Hydrogels for tissue engineering[J].Chem.Rev.,2011,101:1869-1877.
  • 8Seliktar D.Designing cell-compatible hydrogels for biomedical applications[J].Science,2012,336:1124-1128.
  • 9Kinam P,Qiu Y.Environmentl-sensitive hydrogels for drug delivery[J].Adv.Drug.Deliver.Rev.,2011,53:321-339.
  • 10Takashima Y,Hatanaka S,Otsubo M,et al,Expansion-contraction of photoresponsive artificial muscle regulated by host-guest interactions[J].Nat.Commun.,2012,3,187-190.

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