摘要
聚乙烯醇硫酸钾 (PVSK)是胶体滴定技术中应用的标准阴离子聚合电解质。本文研究了以聚乙烯醇、吡啶、氯磺酸和溶剂T为原料制备PVSK的方法和制备过程中的影响因素。以氯代十六烷基吡啶为基准物、甲苯胺兰(T .B .)为指示剂测定了PVSK溶液中阴离子的浓度以及PVSK的酯化度。以酯化度 97.7%的PVSK为标准物 ,利用红外光谱技术对制得的产品进行了定性研究。自制PVSK的酯化度最高为 92 .5 7% 。
Polyvinyl sulfate potassium (PVSK) is the standard anionic polyeletrolyte in colloid titration.This paper focuses on the method of preparing PVSK using polyvinyl alcohol,pyridine,chlorosulfonic acid and solvent T.The factors affecting the preparation of PVSK are studied. Anionic concentration of PVSK solution and ester value are determined with N_cetyl pyridinium chloride and using toluidine blue(T.B.)as the indicator.Using IR and PVSK with ester value of 97.7% as the standard sample,the factors that affect the ester value of product are studied.The ester value of PVSK prepared reaches 92.57% which is in accord with the demand of colloid titration.
出处
《造纸科学与技术》
北大核心
2002年第2期21-26,共6页
Paper Science & Technology
基金
华南理工大学制浆造纸工程国家重点实验室开放基金资助项目
