CAJ | 학술논문

采用水溶液聚合法,以N,N-亚甲基双丙烯酰胺(NMBA)为交联剂、过硫酸钾(KPS)为引发剂、丙烯酸(AA)和丙烯酰胺(AM)为单体,添加一定比例的高岭土和柠檬酸,通过发生共聚交联反应制备高岭土/柠檬酸复合高吸水树脂.试验探讨了高岭土和柠檬酸的质量比、单体质量比、交联剂用量、引发剂用量、反应温度和丙烯酸中和度对复合树脂吸水率的影响.结果表明,当m(高岭土):m(柠檬酸)=1:2、m(AA):m(AM)=4:1、交联剂用量为0.06%、引发剂用量为0.2%、反应温度为70℃、AA中和度为65%时,复合高吸水树脂的最大吸水率为965 g·g-1,最大吸盐水率为105 g·g-1.
채용수용액취합법,이N,N-아갑기쌍병희선알(NMBA)위교련제、과류산갑(KPS)위인발제、병희산(AA)화병희선알(AM)위단체,첨가일정비례적고령토화저몽산,통과발생공취교련반응제비고령토/저몽산복합고흡수수지.시험탐토료고령토화저몽산적질량비、단체질량비、교련제용량、인발제용량、반응온도화병희산중화도대복합수지흡수솔적영향.결과표명,당m(고령토):m(저몽산)=1:2、m(AA):m(AM)=4:1、교련제용량위0.06%、인발제용량위0.2%、반응온도위70℃、AA중화도위65%시,복합고흡수수지적최대흡수솔위965 g·g-1,최대흡염수솔위105 g·g-1.
A superabsorbent resin was synthesized by aqueous solution polymerization with acrylic acid, acrylamide, kaoline and citric acid as substrates, N, N- methylene bisacrylamide(NMBA) as crosslinker, and potassium persulfate(KPS) as initiator. The influences of mass ratio of kaoline and citric acid, the monomer ratio, the content of crosslinking agent, the amount of initiator, reaction temperature and neutralization degree of acrylic acid were studied. The results show that the optimal reaction conditions are as follows. The mass ratio of kaoline to citric acid was 1: 2, the mass ratio of acrylic acid to acrylamide was 4: 1, the amount of crosslinker was 0.06%, the amount of initiating agent was 0.2%, the reaction temperature was 70℃, and the neutralization degree of acrylic acid was 65%. Under such conditions, absorbency of the resin in distilled water and NaCl solution were 965 and 105 g·g-1, respectively.