摘要
以过硫酸铵为引发剂,表面丙烯酰基化的凹凸棒土(AT-MPS)为交联剂,采用水溶液聚合法制备了丙烯酰基化凹凸棒土复合聚(丙烯酸-co-丙烯酰胺)高吸水性树脂[AT-MPS/P(AA-co-AM)]。考察了中和度、丙烯酸与丙烯酰胺的单体比、引发剂用量以及凹凸棒土用量对复合吸水树脂吸液性能的影响。采用红外光谱(FTIR)、热失重分析(TGA)以及扫描电镜(SEM)等方法对复合吸水树脂进行了表征。结果表明,丙烯酸中和度为75%、m(AA)∶m(AM)=4∶1、引发剂用量为0.8%、AT-MPS用量为8%时,复合吸水树脂的最大吸水倍率为347.7 g/g,最大吸盐水倍率为43.5 g/g。红外光谱分析结果表明,凹凸棒土参与了聚合交联反应;SEM表明,凹凸棒土在复合吸水树脂中具有良好的分散性。
A series of superabsorbent resin composited with acrylated attapulgite and P （AA-co-AM） was prepared with aqueous solution polymerization using ammonium persulphate （APS） as the initiator and acrylated attapulgite （AT-MPS） as the crosslinker. The effects of synthesis conditions on the superabsorbent resin were investigated, such as neutralization degree of AA, the mixture ratio of monomers, the use level of initiator and the added amount of attapulgite. The superabsorbent composite resin was characterized by infrared spectroscopy （FTIR）, thermal gravimetric analysis （TGA） and scanning electron microscope （SEM）. The experimental results showed that the optimal condition was as follow： the neutralization level of acrylic acid was 75% , the mixture of monomers was 4： 1, the amount of initiator APS was 0. 8% , and the addition amount of AT-MPS was 8%. The absorbability of the composites resin was up to 347.7 g/g for distilled water and 43.5 g/g salt solution under the condition above. FTIR results showed that attapulgite was involved in the polymerization cross-linking reaction. SEM showed that AT was well dispersed in the super absorbent composite resin.
出处
《塑料工业》
CAS
CSCD
北大核心
2015年第1期84-88,共5页
China Plastics Industry
基金
江苏高校优势学科建设工程资助项目
