CAJ | 학술논문

在水溶性引发剂过硫酸钾的引发下,使丙烯酸(AA)在黄原胶(XG)分子链上接枝聚合,并加入N,N'-亚甲基双丙烯酰胺进行一定程度的交联,制备高吸水性树脂.研究了反应条件对产品吸水率的影响,利用傅里叶红外光谱、X射线衍射、偏光显微镜对接枝共聚物进行表征.实验结果表明:最佳合成条件AA与XG质量比m(AA):m(XG)=6:1,交联剂、引发剂与黄原胶的质量比分别为0.01和0.003,丙烯酸的中和度为70%,反应温度为60℃,反应时间为4h.最佳合成条件下制备的树脂最大吸水倍数854 g/g,吸生理盐水倍数156 g/g.
재수용성인발제과류산갑적인발하,사병희산(AA)재황원효(XG)분자련상접지취합,병가입N,N'-아갑기쌍병희선알진행일정정도적교련,제비고흡수성수지.연구료반응조건대산품흡수솔적영향,리용부리협홍외광보、X사선연사、편광현미경대접지공취물진행표정.실험결과표명:최가합성조건AA여XG질량비m(AA):m(XG)=6:1,교련제、인발제여황원효적질량비분별위0.01화0.003,병희산적중화도위70%,반응온도위60℃,반응시간위4h.최가합성조건하제비적수지최대흡수배수854 g/g,흡생리염수배수156 g/g.
. A novel superabsorbent resin was prepared by graft copolymerization of acrylic acid (AA) onto xanthan gum (XG) with N,N'-methylene diacrylamide as a corsslinking agent initiated with potassium persulfate. The influence of reaction conditions on the absorbency was discussed. The graft copolymers were characterized by means of Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and polarizing microscope (PM). The best conditions for the grafting reaction were found to be that the mass ratio of AA to XG is 6:1, the mass ratio of initiator and crosslinking reagent to xanthan gum is 0.01 and 0.003 respectively, the reaction temperature is 60℃ and the reaction time is 4h.The graft copolymer synthesized with the optimized reaction condition can absorb 854 g/g distilled water and 156 g/g normal saline.