Synthesis of CaCO_3 crystals using hydroxypropylmethyl cellulose hydrogel as template  

作　　者：ZHAO Jin LI YanJun CHENG GuoXiang 

机构地区：[1]School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China

出　　处：《Chinese Science Bulletin》2007年第13期1796-1801,共6页

基　　金：the Teaching and Research Award Program for Outstanding Young Teachers in Higher Education Institutions of Ministry of Education, China (Grant No. 2002-123);the Key Research Project of Ministry of Education, China (Grant No. 02041)

摘　　要：Calcium carbonate crystallization was performed in hydrogel of hydroxypropylmethyl cellulose (HPMC). Results showed that the polyhydroxy functionalities in HPMC gel network facilitated the nucleation of aragonite which was not found in experiment without HPMC hydrogel and in experiment using methylcellulose (MC) hydrogel as template. On the other hand, due to the unique assembly of the macromolecules in HPMC hydrogel network, which was different from other hydrogels used in some previous reports, particular crystal morphology, corncob-like CaCO_3, was obtained for the first time.Calcium carbonate crystallization was performed in hydrogel of hydroxypropylmethyl cellulose （HPMC）. Results showed that the polyhydroxy functionalities in HPMC gel network facilitated the nucleation of aragonite which was not found in experiment without HPMC hydrogel and in experiment using methylcellulose （MC） hydrogel as template. On the other hand, due to the unique assembly of the macromolecules in HPMC hydrogel network, which was different from other hydrogels used in some previous reports, particular crystal morphology, corncob-like CaCO3, was obtained for the first time.

关 键 词：碳酸钙 合成方法 晶体 纤维素 水凝胶 

分 类 号：TQ132.32[化学工程—无机化工]