摘要
用硝酸铈铵作引发剂,通过水溶液聚合法制得了玉米淀粉接枝丙烯酸高吸水性树脂。研究了交联剂及引发剂用量、中和度、反应温度以及反应时间等对吸水率的影响。得到的最佳反应条件为:交联剂和引发剂与丙烯酸的摩尔比分别为0.95×10-5和4.8×1-0 3,中和度71%,反应温度45℃,反应时间2 h。制得的高吸水树脂在室温下30 m in每克吸蒸馏水和自来水分别约为其自身质量的1000和200倍。
By using ceric ammonium nitrate as the initiator, a superabsorbent polymer was prepared from graft copolymer of corn starch and acrylic acid. The influences of the amount of crosslinking agent and initiator, neutralization degree of acrylic acid, reaction temperature and reaction time on the water absorbency of the graft copolymer were investigated. The optimum reaction conditions are 0.95 × 10^-5 molar ratio of crosslinking agent to acrylic acid, 4.8 × 10^-3 molar ratio of initiator to acrylic acid, 71% neutralization degree of acrylic acid, polymerization at 45℃C and 2 h. Water absorbency in distilled water and tap water in 30 min is about 1000 g/g and 200 g/g, respectively.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2006年第1期250-253,共4页
Polymer Materials Science & Engineering
基金
国家民委重点科研项目(民委发[2004]241)
关键词
高吸水性树脂
玉米淀粉
丙烯酸
接枝共聚
superabsorbent polymer
corn starch
acrylic acid
graft copolymer
