The synthesis of water soluble cationic microgels by dispersion polymerization: Their performance in kaolin deposition onto fiber
The synthesis of water soluble cationic microgels by dispersion polymerization: Their performance in kaolin deposition onto fiber
复制标题
DOI：
10.1002/app.31665
复制
发表时间：
2009-12
影响因子：
3
通讯作者：
Sedat Ondaral;M. Usta;M. Gümüşderelioğlu;N. Arsu;D. K. Balta
中科院分区：
文献类型：
--
作者：
Sedat Ondaral;M. Usta;M. Gümüşderelioğlu;N. Arsu;D. K. Balta
以N，N‘-亚甲基双丙烯酰胺(MBA)为交联剂，聚N-乙烯基吡咯烷酮(PVP)为稳定剂，2，2’-偶氮二异丁腈(AIBN)为引发剂，在叔丁醇(TBA)/水体系中采用分散聚合法合成了丙烯酰胺(AM)和二烯丙基二甲基氯化铵(DADMAC)分子内交联阳离子微凝胶(CMG)。考察了单体、交联剂、引发剂和稳定剂浓度对CMG粒径和相对分子质量的影响。聚合物粒子在多分散指数1.1~1.4范围内分散良好，分子量分布呈双峰分布。此外，还考察了两种CMG在漂白硫酸盐纤维上的粘土沉积效率，并与商业上广泛使用的阳离子聚丙烯酰胺(CPAM)和聚二烯丙基二甲基氯化铵(Poly-DADMAC)进行了比较。实验结果表明，CMG是一种有效的絮凝剂，其絮凝效果与其相对分子质量和电荷密度有关。《威利期刊》公司，《应用波利姆科学》，2010
The water soluble cationic microgels (CMG), intramolecularly cross-linked cationic polymers of acrylamide (Am) and diallyldimethylammonium chloride (DADMAC), were synthesized with dispersion polymerization in the mixture of tert-butanol (TBA)/water in the presence N,N′-methylene-bisacrylamide (MBA) as the cross-linker, poly(N-vinylpyrrolidone (PVP) as the stabilizer and 2,2′-azobisisobutyronitrile (AIBN) as the initiator. The effects of monomer, cross-linker, initiator, and stabilizer concentration on both particle size and molecular weight of CMG were investigated. The well dispersed polymer particles were produced in the range of poly dispersity index 1.1–1.4 and the molecular weight distribution with bimodal. Additionally, the efficiencies of two CMGs in the clay deposition on the bleached kraft fibers were investigated and compared with commercially widely used cationic polyacrylamide (CPAM) and poly-diallyldimethylammonium chloride (poly-DADMAC). The experiments showed that the CMGs were found as the effective flocculation agents and their efficiencies depended on their molecular weight and charge density. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010