羧甲基纤维素接枝丙烯酸钠的合成与性能
以羧甲基纤维素钠、丙烯酸为主要原料,在一定条件下通过自由基接枝聚合合成高吸水树脂。分别考察了各种合成条件,如反应温度、反应时间、引发剂配比及用量、交联剂用量、丙烯酸中和度等因素对高吸水树脂吸收能力的影响,确定了最佳合成条件,并用红外光谱仪和扫描电镜对合成产物进行了表征。根据实验分析得到最佳条件为:m(CMCNa)/m(AA)=0.1,m(NMBA)/m(AA):2.9×10^-2,m(Na2S2O8+Na2SO3)/m(AA)=6.5×10^-3,m(Na2S2O8)/m(Na2SO3)=2,中和度为70%,反应温度20℃,反应时间6h。在此条件下合成的高吸水树脂吸收0.9%的NaCl水溶液为...
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| Published in | 实验室研究与探索 Vol. 35; no. 12; pp. 13 - 17 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
鲁东大学化学与材料科学学院,山东烟台,264025%烟台万华超纤股份有限公司,山东烟台,264002
2016
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1006-7167 |
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| Summary: | 以羧甲基纤维素钠、丙烯酸为主要原料,在一定条件下通过自由基接枝聚合合成高吸水树脂。分别考察了各种合成条件,如反应温度、反应时间、引发剂配比及用量、交联剂用量、丙烯酸中和度等因素对高吸水树脂吸收能力的影响,确定了最佳合成条件,并用红外光谱仪和扫描电镜对合成产物进行了表征。根据实验分析得到最佳条件为:m(CMCNa)/m(AA)=0.1,m(NMBA)/m(AA):2.9×10^-2,m(Na2S2O8+Na2SO3)/m(AA)=6.5×10^-3,m(Na2S2O8)/m(Na2SO3)=2,中和度为70%,反应温度20℃,反应时间6h。在此条件下合成的高吸水树脂吸收0.9%的NaCl水溶液为99g/g。 |
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| Bibliography: | superabsorbent resin ; sodium carboxyl methylcellulose ; acrylic acid ; N,N-methylene bisacrylamide ; graft copolymerization The superabsorbent resin was prepared with sodium carboxyl methylcellulose (CMCNa), acrylic acid (AA) by means of free radical graft copolymerization. The effects of preparation conditions were investigated, such as copolymerization temperature, reaction time, the proportion and the amount of initiator, the amount of crosslinking agent and the neutralization degree of AA, etc. And the synthesized product was characterized by infrared spectroscopy and scanning electron microscopy. Analyses on the experimental data leads to the optimum preparation conditions, which are as follows, m(CMCNa)/m(AA) =0.1, m(NMBA)/m(AA) =2.9 ×10^-2, m(Na2S2O8 +Na2SO3)/m(AA) =6.5 × 10^-3, m(Na2S2O8)/m ( Na2SO3 ) = 2, neutralization degree of acrylic acid is 70% , reaction temperature is 20 ℃, reaction time is 6 h. The water-absorption radio of the superabsorbent resin prepared under the optimum conditions is 99 |
| ISSN: | 1006-7167 |