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Poly(methyl methacrylate)/Poly(N-isopropylacrylamide) Core-Shell Particles Prepared by Seeded Precipitation Polymerization: Unusual Morphology and Thermo-sensitivity of Zeta Potential

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文摘 Poly(methyl methacrylate)/poly(N-isopropylacrylamide) (PMMA/PNIPAM) core-shell particles were synthesized by seeded precipitation polymerization of N-isopropylacrylamide (NIPAM) in the presence of PMMA seed particles. The anionic potassium persulfate was used as initiator, and acrylic acid as functional comonomer. It was shown that the weight ratio of the PNIPAM shell to the PMMA core can be greatly increased through continuous addition of NIPAM monomer at a relatively slow rate. PMMA/PNIPAM particles with different shell thickness were obtained by varying the amount of charged NIPAM monomers. These particles exhibited unique nonspherical core-shell morphology. PMMA core was partially coated by dense hair-like or antler-like PNIPAM shell depending on the shell thickness. The measurement of these particles’ zeta potential at different temperatures showed that the absolute value of zeta potential unusually decreased as the particle size decreased with temperature.
来源 Chinese Journal of Polymer Science ,2014,32(5):524-530 【核心库】
DOI 10.1007/s10118-014-1435-8
关键词 Core-shell particle ; Thermo-sensitive ; Seeded precipitation polymerization ; Synthesis
地址

1. College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang, 110142  

2. Department of Production Science and Technology, Faculty of Engineering, Gunma University, Japan, Ota, 373-0057

语种 英文
文献类型 研究性论文
ISSN 0256-7679
学科 化学
基金 国家自然科学基金 ;  the Program for Liaoning Excellent Talents in Universities
文献收藏号 CSCD:5103127

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引证文献 4

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2 武卫莉 超低温相变储能微胶囊研究进展 高分子通报,2015(8):101-105
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