文献类型：期刊文献

英文题名：Novel Morphology of Calcium Carbonate Controlled by Poly(L-lysine)

作者：Yao, Yuan[1];Dong, Wenyong[1];Zhu, Shenmin[2];Yu, Xinhai[3];Yan, Deyue[1]

机构：[1]Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China;[2]Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China;[3]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2009

卷号：25

期号：22

起止页码：13238

外文期刊名：LANGMUIR

收录：;EI(收录号：20095112551584);WOS:【SCI-EXPANDED(收录号:WOS:000271522800056)】；

基金：This work was subsidized by the National Natural Science Foundation of China (20874060, 50503012, 50772067 20606011), National Basic Research Program (2007CB808000), the Basic Research Foundation (07DJ14004) of Shanghai Science and Technique Committee, and Shanghai Leading Academic Discipline Project (13202).

语种：英文

外文关键词：Amino acids - Morphology - Block copolymers - Alkalinity - Calcite

摘要：The novel calcium carbonate (CaCO3) morphology, twin-sphere with an equatorial girdle, has been obtained under the control of poly(L-lysine) (PLys) through gas-diffusion method. The effect of the concentration of calcium cation and PLys, the reaction time, and the initial pH value are investigated, and various interesting morphologies, including twinsphere, discus-like, hexagonal plate, and hallow structure are observed by using scanning electronic microscopy. Laser microscopic Raman spectroscopy studies indicated that all these CaCO3 are vaterite. A possible mechanism is suggested to explain the formation of the twin-sphere based morphologies according to the results. It is proven that alkaline polypeptides can control the mineralization of CaCO3 precisely as the reported acidic polypeptides and double hydrophilic block copolymers.