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Effects of Cross-Link Density on Structures and Properties of Dual-Sensitive Semi-Interpenetrating Polymer Networks Hydrogel Microspheres
Lai, Enping1,2; Wang, Yuxia1; Wei, Yi1; Li, Guang2; Ma, Guanghui1
2017-05-01
发表期刊MACROMOLECULAR CHEMISTRY AND PHYSICS
ISSN1022-1352
卷号218期号:9
摘要Semi-interpenetrating polymer network (semi-IPN) strategy is employed to fabricate uniform microspheres with temperature and pH dual-responsive behavior, which is composed of poly(N-isopropylacrylamide) and poly(acrylic acid) in the presence of N,N-methylenebisacrylamide (MBA) as the cross-linker. The influences of MBA amount (M-m) on the structures and properties of the microspheres are investigated in terms of particle size, surface morphology, pH sensitivity, and thermo-sensitivity with low critical solution temperature in the range M-m = 2.5-15%. Additionally, functional group distributions in the microspheres are probed by titration and employing the Henderson-Hasselbalch equation. The results show that all the properties strongly change depending on M-m. Based on transmission electron microscopy and confocal laser scanning microscopy measurements, and these properties, the M-m-induced changes in the structures of the semi-IPN microspheres are discussed.
关键词Crosslinking Interpenetrating Networks Microgels Stimuli-sensitive Polymers
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.1002/macp.201600596
收录类别SCI
语种英语
关键词[WOS]VOLUME PHASE-TRANSITION ; SEMI-IPN ; POLY(N-ISOPROPYLACRYLAMIDE) MICROGELS ; N-ISOPROPYLACRYLAMIDE ; POLY(ACRYLIC ACID) ; CARBOXYLIC-ACID ; PH ; TEMPERATURE ; GELS ; POLYELECTROLYTE
WOS研究方向Polymer Science
WOS类目Polymer Science
项目资助者National Natural Science Foundation of China(51173187 ; Beijing Municipal Science and Technology Commission(Z141100000214007) ; 21336010)
WOS记录号WOS:000400649700008
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22842
专题生化工程国家重点实验室
作者单位1.Chinese Acad Sci, State Key Lab Biochem Engn, Inst Proc Engn, Beijing 100190, Peoples R China
2.Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Coll Mat Sci & Engn, Shanghai 201620, Peoples R China
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Lai, Enping,Wang, Yuxia,Wei, Yi,et al. Effects of Cross-Link Density on Structures and Properties of Dual-Sensitive Semi-Interpenetrating Polymer Networks Hydrogel Microspheres[J]. MACROMOLECULAR CHEMISTRY AND PHYSICS,2017,218(9).
APA Lai, Enping,Wang, Yuxia,Wei, Yi,Li, Guang,&Ma, Guanghui.(2017).Effects of Cross-Link Density on Structures and Properties of Dual-Sensitive Semi-Interpenetrating Polymer Networks Hydrogel Microspheres.MACROMOLECULAR CHEMISTRY AND PHYSICS,218(9).
MLA Lai, Enping,et al."Effects of Cross-Link Density on Structures and Properties of Dual-Sensitive Semi-Interpenetrating Polymer Networks Hydrogel Microspheres".MACROMOLECULAR CHEMISTRY AND PHYSICS 218.9(2017).
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