反相悬浮聚合制备淀粉-丙烯酰胺-丙烯酸共聚物暂堵剂  

The Preparation of Starch-Acrylamide-Acrylic Acid Copolymer as an Temporary Blocking Agent by Inverse Suspension Polymerization

作　　者：赵强[1] 张定军[1] 陈振斌[1] 陈玉仙[1] 王晓康[1] 瞿朝云[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料重点实验室有色金属合金及加工教育部重点实验室,甘肃兰州730050

出　　处：《石油化工》2011年第3期308-311,共4页Petrochemical Technology

基　　金：甘肃省自然科学基金资助项目(0710RJZA066);兰州市科技计划资助项目(2008-1-21)

摘　　要：以淀粉、丙烯酰胺、丙烯酸为共聚单体,硝酸铝为交联剂,过硫酸钾为引发剂,Span-60/Tween-60为复合乳化剂,采用反相悬浮聚合法合成了一种新型暂堵剂淀粉-丙烯酰胺-丙烯酸共聚物,并采用SEM和FTIR技术对共聚物进行了表面形貌分析和结构表征;考察了硝酸铝用量、丙烯酸中和度和淀粉用量对暂堵剂吸水性能的影响。实验结果表明,暂堵剂的最佳合成条件:丙烯酰胺5.00 g、环己烷60 mL、0.80 g Span-60、0.40 g Tween-60、丙烯酸中和度80%、淀粉1.50 g、硝酸铝0.02 g、70℃、3 h;在该条件下合成的暂堵剂的吸水倍率最大,且具有适中的强度。With starch, acrylamide and acrylic acid as comonomers, aluminum nitrate as a cross-linking agent,potassium peroxydisulfate as an initiator and Span-60/Tween-60 as a suspension dispersing agent, a new temporary blocking agent（TPA）, starch-acrylamide-acrylic acid copolymer, was prepared by inverse suspension polymerization. The surface morphology and structure of the copolymer were characterized by means of SEM and FFIR. The factors influencing TPA＇ s water absorption were studied, including the cross-linking agent content, the neutralization degree of acrylic acid and the starch content. The optimum conditions to synthesize TPA with good stability are： 5.00 g acrylamide,60 mL cyclohexane,0. 80 g Span-60, 0. 40 g Tween-60, 80% neutralization degree, 1.50 g starch, 0. 02 g aluminum nitrate and reaction under 70℃ for 3 b.

关 键 词：丙烯酸 丙烯酰胺 淀粉 反相悬浮聚合 暂堵剂 吸水性能 

分 类 号：TQ316.334[化学工程—高聚物工业]