双亲水嵌段共聚物存在下特殊形貌的BaC_2O_4晶体合成  

Synthesis of BaC_2O_4 Crystals with Novel Morphologies in the Presence of a Double-hydrophilic Block Copolymer

作　　者：张冬柏[1] 齐利民[1] 马季铭[1] 程虎民[1] 

机构地区：[1]北京大学化学与分子工程学院

出　　处：《高等学校化学学报》2004年第1期159-161,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 0 0 0 3 0 0 1;2 0 2 3 3 0 10 );教育部优秀博士论文作者专项基金 (批准号 :2 0 0 0 2 0 );教育部博士学科点基金 (批准号 :2 0 0 0 0 0 0 155)资助

摘　　要：The crystallization of barium oxalate in the presence of a double-hydrophilic block copolymer poly(ethylene glycol)-block-poly(methacrylic acid) (PEG-b-PMAA) was investigated. Barium oxalate crystals with a complex form, such as fan-like aggregates consisting of rod-like BaC 2O 4·H 2O crystals and spherical aggregates consisting of flake-like BaC 2O 4·3.5H 2O crystals were readily produced in aqueous solutions of PEG-b-PMMA. This result may provide an effective method for controlling the morphology and polymorph of inorganic crystals.The crystallization of barium oxalate in the presence of a double-hydrophilic block copolymer poly(ethylene glycol)-block-poly(methacrylic acid) (PEG-b-PMAA) was investigated. Barium oxalate crystals with a complex form, such as fan-like aggregates consisting of rod-like BaC 2O 4·H 2O crystals and spherical aggregates consisting of flake-like BaC 2O 4·3.5H 2O crystals were readily produced in aqueous solutions of PEG-b-PMMA. This result may provide an effective method for controlling the morphology and polymorph of inorganic crystals.

关 键 词：双亲水嵌段共聚物 BaC2O4 晶体生长 草酸钡 合成 形貌调控 

分 类 号：O614.233[理学—无机化学] O78[理学—化学]