摘要
采用水溶液聚合法将丙烯酰氧乙基三甲基化铵(DAC)、丙烯酰胺(AM)、丙烯酸(AA)3种单体接枝到纤维素骨架中合成玉米秸秆基两性高吸水性树脂。研究单体用量、秸秆用量、交联剂用量、引发剂用量、反应温度、反应时间和中和度对高吸水性树脂吸液率的影响。通过扫描电镜图、红外光谱图对其形貌进行表征。实验结果表明,在秸秆、AA、AM、DAC的质量分别为1、5、1和0.5g,引发剂用量占单体比率为1.2%,交联剂用量占单体总量比率为0.1%,中和度为75%,反应时间为3h,反应温度为60℃的合成条件下,制备的高吸水性树脂(SAR)吸液率达最大,其吸水率为235.9g/g,0.9%NaCl溶液的吸收率为31.3g/g。
Super absorbent resins were synthesized by graft copolymerization reaction of acrylic acid（AA） and acrylic amide（AM） and acryloyl-oxyethyl trimethyl ammonium chloride（DAC） onto the pretreatment corn straw（PTCS） by radical polymerization in aqueous solution.The factors,which influenced absorbency of super absorbents,such as weight ratio of monomers and pretreatment corn straw（PTCS）,the amount of initiator and cross-linker,temperature,time and neutralization degree of AA,were investigated.The molecular structure of the product was confirmed by Fourier transform infrared spectroscopy（FT-IR） and the morphological features were evidenced by scanning electron microscopy（SEM）.The experimental results showed that when the mass of the PTCS,AA,AM,DAC were 1,5,2,0.5g,respectively;the ratio of K2S2O8 to monomer was 1.0%;the ratio of MBA to monomer was 0.1%;neutralization degree of AA was 75%;temperature was 60℃ and time was 3h,the super absorbent resin reached the best water absorbency of 235.9g/g in distilled water and 31.3g/g in 0.9wt% NaCl solution.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2013年第1期79-83,87,共6页
Journal of Functional Materials
基金
国家自然科学基金资助项目(21007034,50878121)
山东省自然科学基金资助项目(ZR2010EQ031)
山东省中青年科学家奖励基金资助项目(BS2009NY005)
