摘要
用过硫酸钾(KPS)作引发剂、通过水溶液聚合法制得了可生物降解的聚丙烯酸盐/海藻酸钠高吸水性树脂.研究了海藻酸钠(SPM)及引发剂用量、丙烯酸(AA)中和度(Dn)、聚合反应温度(T)等因素对树脂吸水率的影响以及树脂的生物降解性能.当海藻酸钠的质量分数WSPM为1.5%,过硫酸钾的质量分数WKPS为0.15%,中和度为65%,反应温度为70℃时,共聚物蒸馏水的吸水率为812g·g-1,生理盐水的吸水率为79g·g-1,且能被土壤和特定微生物降解,在土壤中60d的降解率达17.36%.
A biodegradable super-absorbent was prepared from copolymer of acrylic acid (AA) with sodium polymannuronate (SPM). The effects of the amount of SPM and initiator, neutralization degree (Dn) of AA, reaction temperature (T) on absorbency and biodegradability of the copolymer were studied. When WSPM = 1%-5%, WKPS = 0.15%, Dn = 65%, T = 70°C, the absorbency of the superabsorbent was 812 g·g-1 for pure water and 79 g·g-1 for normal saline. The super-absorbent could be degraded by soil and specific microbes, the degradation degree was up to 17.36% within 60 days.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2005年第6期1134-1137,共4页
CIESC Journal
基金
国家自然科学基金项目(20376087).~~
关键词
高吸水性树脂
聚丙烯酸盐
海藻酸钠
生物降解
Acrylics
Biodegradation
Copolymers
Initiators (chemical)
Polyacrylates
Saline water
