Mechanical Properties and UV Curing Behavior of Poly(N-Isopropylacrylamide) in Phosphonium-Based Ionic Liquids

被引:13
作者
Ziolkowski, Bartosz [1 ]
Ates, Zeliha [2 ]
Gallagher, Simon [1 ]
Byrne, Robert [1 ]
Heise, Andreas [2 ]
Fraser, Kevin J. [1 ]
Diamond, Dermot [1 ]
机构
[1] Dublin City Univ, Sch Chem Sci, Natl Ctr Sensor Res, Ctr Sensor Web Technol,Clarity, Dublin 9, Ireland
[2] Dublin City Univ, Sch Chem Sci, Dublin 9, Ireland
基金
爱尔兰科学基金会;
关键词
ionic liquids; ionogels; N-isopropylacrylamide (NIPAM); viscoelastic properties; RADICAL POLYMERIZATION; ELECTROLYTES; KINETICS; LI; MICROVALVES; MICROPUMPS; POLYMERS; MONOMERS; PNIPAM; SALTS;
D O I
10.1002/macp.201200616
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
N-isopropylacrylamide (NIPAM) is photopolymerized in a range of phosphonium-based ionic liquids (ILs). The curing behaviour of polymer-IL solutions (linear pNIPAM) and ionogels (crosslinked pNIPAM) is studied using rheometry, DSC, and GPC. It is found that the IL influences the mechanical properties, the rate of polymerization, and the LCST of the resulting pNIPAM ionogels. Ionogels made in trihexyl-tetradecyl phosphonium dicyanamide show an order of magnitude smaller ratio of loss/storage moduli compared to that of trihexyl-tetradecyl phosphonium chloride, and a doubling of the UV polymerization rate. Temperature-ramp rheology scans of the water-swollen ionogels show that upon LCST transition the moduli of the polymer network exhibit anion dependent increases.
引用
收藏
页码:787 / 796
页数:10
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