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当前位置: 首页 > 文章 > 羟丙基甲基纤维素高吸水性树脂制备与性能表征 农业机械学报 2019 (2) 297-306
Position: Home > Articles > Preparation and Performance Characterization of Hydroxypropyl Methyl Cellulose Based Super Absorbent Resin Transactions of the Chinese Society for Agricultural Machinery 2019 (2) 297-306

羟丙基甲基纤维素高吸水性树脂制备与性能表征

作  者：
王宇欣;李雪嫄;赵亚楠;王平智
单  位：
中国农业大学水利与土木工程学院
关键词：
羟丙基甲基纤维素;高吸水性树脂;微波法;吸水性能;形态表征
摘  要：
以羟丙基甲基纤维素为骨架材料,丙烯酸为接枝共聚单体,过硫酸铵-亚硫酸氢钠为引发剂,聚乙二醇200二丙烯酸酯为交联剂,在微波辐射的条件下通过接枝聚合反应制备高吸水性树脂,并对高吸水性树脂的吸液倍率、吸液速率、保水性能以及红外光谱、热稳定性、表观形态进行表征。结果表明,羟丙基甲基纤维素与丙烯酸质量比为1/7、中和度为65%、引发剂与丙烯酸质量分数为1%、交联剂与丙烯酸质量分数为0. 4%、反应时间为4. 5 min是较优的制备方法,该条件下制备的羟丙基甲基纤维素高吸水性树脂吸水倍率可达497. 13 g/g,吸盐倍率为61. 70 g/g;35℃条件下,该高吸水性树脂可保水48 h以上;重复使用6次后,该高吸水性树脂仍具有较高的吸液倍率。
译  名：
Preparation and Performance Characterization of Hydroxypropyl Methyl Cellulose Based Super Absorbent Resin
作  者：
WANG Yuxin;LI Xueyuan;ZHAO Ya'nan;WANG Pingzhi;College of Water Conservancy and Civil Engineering,China Agricultural University;
单  位：
WANG Yuxin%LI Xueyuan%ZHAO Ya'nan%WANG Pingzhi%College of Water Conservancy and Civil Engineering,China Agricultural University
关键词：
hydroxypropyl methyl cellulose;;super absorbent resin;;microwave-assisted;;water absorbency;;morphological characterization
摘  要：
Super absorbent resin was prepared by graft copolymerization of hydroxypropyl methylcellulose( HPMC) with acrylic acid as graft copolymer,ammonium persulfate-sodium bisulfite as initiator and polyethylene glycol diacrylate as crosslinker under microwave radiation. The absorbent ratio,absorbent rate and crosslinking rate of super absorbent resin were studied. The water retention properties and IR spectra,thermogravimetric and apparent morphology were characterized. The results showed that the optimum preparation methods were as follows: the mass ratio of HPMC to acrylic acid was 1/7,the neutralization degree was 65%,the mass ratio of initiator to acrylic acid was 1%,the mass ratio of crosslinking agent to acrylic acid was 0. 4%,and the reaction time was 4 min and 30 s. Under the optimum preparation conditions,the water absorption ratio of HPMC super absorbent resin could reach497. 13 g/g and the salt absorption ratio was 61. 70 g/g. This hydroxypropyl methyl cellulose based super absorbent resin could absorb liquid to reach the state of preservation in 30 min quickly. The super absorbent resin could retain water for more than 48 h at 35℃,6 h at 55℃ and 5 h at 75℃. After six times of reuse,the water absorption rate of the super absorbent resin could still reach 69. 7% of the initial water absorption rate,and the salt absorption rate could still reach 44. 2% of the initial salt absorption rate. The super absorbent resin had good reusability. Thermogravimetric analysis showed that the super absorbent resin had good stability at 330℃. The hydroxypropyl methyl cellulose based super absorbent resin had good water absorption,salt resistance,high water retention rate and excellent reusability.

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