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Morphology Evolution of Polystyrene-core/Poly(N-isopropylacrylamide)-shell Microgel Synthesized by One-pot Polymerization
Hu, HQ; Cheng, H; Yang, H; Cheng H(程贺); Yang H(杨华); Hu, WT
刊名CHINESE JOURNAL OF POLYMER SCIENCE高分子科学
2017
卷号35期号:9页码:1156-1164
关键词One-pot PS-core/PNIPAM-shell TEM DLS SANS
ISSN号0256-7679
DOI10.1007/s10118-017-1969-7
文献子类Article
英文摘要One-pot polymerization with macroinitiator is supposed to be a robust, facile way to synthesize well-defined core-shell nanoparticles with fixed shell thickness. To testify this, we investigated the temperature-depending morphology evolution of polystyrene (PS) core/poly(N-isopropylacrylamide) (PNIPAM) shell microgel synthesized by one-pot polymerization with PNIPAM-RAFT as macroinitiator in dimethylformamide (DMF) by transmission electron microscopy (TEM), dynamic/static light scattering (DLS/SLS) and small angle neutron scattering (SANS). It is revealed that the microgel has a core-shell structure, i.e., the core is made of pure PS, but the shell is composed of both PNIPAM-RAFT macroinitiator and crosslinked PS. In fact, there are 92.0 wt% D2O, 6.7 wt% PNIPAM and 1.3 wt% PS in the shell in its aqueous dispersion at 21 degrees C; therefore, its shell thickness is much larger than the extended chain length of the macroinitiator as revealed by both SANS and DLS observations. Competitive growth of styrene, divinylbenzene and PNIPAM macroinitiator as well as possible chain transfer from amine proton of PNIPAM side chain may lead to the larger shell thickness, compared with the extended chain length of the macroinitiator. Our work can shed light on the real morphology control in one-pot polymerization.
电子版国际标准刊号1439-6203
WOS关键词ANGLE NEUTRON-SCATTERING ; VOLUME-PHASE-TRANSITION ; RAFT POLYMERIZATION ; LIGHT-SCATTERING ; POLY(N-ISOPROPYLACRYLAMIDE) ; CORE ; TEMPERATURE ; WATER ; PARTICLES ; GEL
WOS研究方向Polymer Science
语种英语
CSCD记录号CSCD:6029064
WOS记录号WOS:000405961000011
内容类型期刊论文
源URL[http://ir.ihep.ac.cn/handle/311005/285239]  
专题高能物理研究所_东莞分部
高能物理研究所_实验物理中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Hu, HQ,Cheng, H,Yang, H,et al. Morphology Evolution of Polystyrene-core/Poly(N-isopropylacrylamide)-shell Microgel Synthesized by One-pot Polymerization[J]. CHINESE JOURNAL OF POLYMER SCIENCE高分子科学,2017,35(9):1156-1164.
APA Hu, HQ,Cheng, H,Yang, H,程贺,杨华,&Hu, WT.(2017).Morphology Evolution of Polystyrene-core/Poly(N-isopropylacrylamide)-shell Microgel Synthesized by One-pot Polymerization.CHINESE JOURNAL OF POLYMER SCIENCE高分子科学,35(9),1156-1164.
MLA Hu, HQ,et al."Morphology Evolution of Polystyrene-core/Poly(N-isopropylacrylamide)-shell Microgel Synthesized by One-pot Polymerization".CHINESE JOURNAL OF POLYMER SCIENCE高分子科学 35.9(2017):1156-1164.
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