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Citation: ZHANG Pu-Yu, ZHONG Xue-Li, LIU Yang. Influence of PVP-b-PMAA Block Copolymer on the Morphology of CaCO₃ Crystals[J]. Chinese Journal of Applied Chemistry, ;2008, 25(9): 1052-1056. shu

Influence of PVP-b-PMAA Block Copolymer on the Morphology of CaCO₃ Crystals

1.
Institute of Fine Chemical Engineering, College of Chemistry & Chemical Engineering, Henan University, Kaifeng 475004

Corresponding author: ZHANG Pu-Yu,
Received Date: 27 August 2007
Available Online: 12 November 2007
Fund Project: 河南省教育厅自然科学基金(200510475044)资助项目 (200510475044)

A novel double-hydrophilic block copolymer(DHBC) poly(vinyl pyrrolidone)-block-poly(methacrylic acid)(PVP-b-PMAA),was synthesized via reversible addition fragmentation chain transfer(RAFT) polymerization.The structure of the resulting copolymer was characterized by ¹H NMR,and the molecular weight of the copolymer was 28 800 determined by gel permeation chromatography(GPC),and the molecular weight distribution index was 1.42.The morphology of calcium carbonate(CaCO₃) in the presence of PVP-b-PMAA block copolymer was studied.It was found that with the increase of the mass concentration of the block copolymer,the morphology of the CaCO₃ particles changed from layered to aggregate.When the mass concentration of the block copolymer was 1 g/L,some cavities were observed in the aggregated crystals.
- reversible addition fragmentation chain transfer(RAFT),
- double hydrophilic block copolymers,
- calcium carbonate,
- crystal growth,
- crystal morphology
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Influence of PVP-b-PMAA Block Copolymer on the Morphology of CaCO3 Crystals

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通讯作者: 陈斌, bchen63@163.com

Influence of PVP-b-PMAA Block Copolymer on the Morphology of CaCO₃ Crystals