Morphological control or CaCO3 particles by a double-hydrophilic block copolymer in mixed alcohol-water solvents

The crystallization of calcite from mixed alcohol water solvents in the presence of a double hydrophilic block copolymer poly(ethylene glycol) block poly(methacrylic acid)(PEG b PMAA) has been investigated. It was revealed that with increasing the volume fractions of ethanol or isoprop...The crystallization of calcite from mixed alcohol-water solvents in the presence of a double-hydrophilic block copolymer poly (ethylene glycol)-block-poly (methacrylic acid) (PEG-b-PMAA) has been investigated. It was revealed that with increasing the volume fractions of ethanol or isopropanol, the morphology of the CaCO3 particles generally varies from peanuts through rods to spheres in the presence of the polymer. Specifically, uniform rounded calcite rods, which are about 2 mum in length with an aspect ratio of 2. 6, were obtained in the isopropanol solution with volume fraction 50%.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000177411000035&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701SCI(E)中文核心期刊要目总览(PKU)中国科技核心期刊(ISTIC)中国科学引文数据库(CSCD)26081595-15972