%0 Journal Article
%T Surface Characteristics of Heavy Calcium Carbonate Modified by Polymer Grafting<br>苯乙烯接枝聚合改性的重质碳酸钙表面特征分析及形成机理
%A WU Wei
%A LU Shou-ci
%A CHEN Jian-feng
%A SHAO Lei
%A <br>毋伟，卢寿慈
%A 陈建峰，邵磊
%J 过程工程学报
%D 2002
%I 
%X A new process of polymer grafting modification of CaCO3 is proposed, which combines the action of mechanical force, thermal and chemical effects. The modification time is reduced greatly and the modification effect is improved. Infrared spectrum (IR), gel permeation chromatography (GPC), X photoelectron spectrum (XPS) and thermogravimetry (TG) analyses are employed to characterize the modified surface of heavy calcium carbonate by styrene grafting. It is proven that chemically absorbed multi-layer polystyrene exists on the surface of the modified particles apart from grafted polystyrene. The primary surface characteristics of heavy calcium carbonate are deduced based on physico-chemical analyses. Radical polymerization is regarded as the primary modification mechanism.
%K heavy calcium carbonate
%K styrene
%K surface characteristic
%K polymerization<br>接枝聚合
%K 重质碳酸钙
%K 苯乙烯
%K 表面性质
%K 矿物填料
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=3FCF8B1A330466D5&jid=B9EE12934D19905403D996AE65CEEEED&aid=577151800989942F&yid=C3ACC247184A22C1&vid=0B39A22176CE99FB&iid=B31275AF3241DB2D&sid=3054A11AD1D7E34A&eid=42D7028D961473F8&journal_id=1009-606X&journal_name=过程工程学报&referenced_num=6&reference_num=12