载H_2NCSNH_2明胶微球的制备及其对Ag^+吸附性能的研究  

Study on preparation of H_2NCSNH_2 carried gelatin microsphere and it absorption performance for Ag^+

作　　者：余丽丽[1] 姚琳[1] 杨黎燕[1] 李仲谨[2] 

机构地区：[1]西安医学院药学院,陕西西安710021 [2]陕西科技大学化学与化工学院,陕西西安710021

出　　处：《化工科技》2012年第3期5-9,共5页Science & Technology in Chemical Industry

基　　金：国家自然科学基金资助项目(50573046);陕西省教育厅科研计划资助项目(11JK0694);西安医学院自然科学资助项目(10FC021)

摘　　要：以明胶和硫脲(H2NCSNH2)为原料,戊二醛为交联剂,采用反相乳液聚合法制备了明胶负载硫脲微球(H2NCSNH2-GM)。考察了pH值和乳化剂用量对GM表面形态、硫脲包埋率及其对Ag+的吸附特性的影响。结果表明,当pH=6.0、m(span-80)∶m(液体石蜡)=5%时,所得H2NCSNH2-GM表面形态较好且包埋率最高;随着pH值的减小和乳化剂span-80用量增加,H2NCSNH2-GM对Ag+的吸附能力增加。This study aimed to investigate the main factors affecting the the of preparation of H2NCSNH2 carried gelatin microsphere（H2NCSNH2-GM） and the H2NCSNH2 loading capability. The gelatin microspheres were prepared by gelatin and thiourea, the cross-linking agent was glutaral- dehyde,in this way the H2NCSNH2 carried gelatin microspheres were obtained. The Influence of pH value and the level of the emolsifier to H2NCSNH2-GM＇ surface feature,the embedding ratio and the absorption performance were discussed. The result showed that the optimum preparation condition is as follows：pH=6. 0,use level of the emolsifier is 5%. With decreasing of the pH value and the increasing of use level of the emolsifier,the absorptive capacity of H2NCSNH2-GM for Ag^＋ raised.

关 键 词：明胶微球 硫脲 吸附 Ag+ 

分 类 号：O647.3[理学—物理化学]