竹材加工剩余物耐盐性高吸水保水材料的制备及性能  

Super absorbent resin from grafting acrylic acid onto bamboo fiber

作　　者：曹玲燕[1] 赵稳祥 虞小莹 董聪勇 金贞福[1] 

机构地区：[1]浙江农林大学工程学院,浙江临安311300

出　　处：《浙江农林大学学报》2016年第2期295-299,共5页Journal of Zhejiang A&F University

基　　金：浙江省新苗人才培养计划项目(2015R412006)

摘　　要：竹材加工剩余物是丰富的可再生资源,且在培肥土壤、改善土壤微量元素等方面有积极作用。利用竹材加工剩余物制备高吸水保水材料,不仅使天然资源得到有效利用,还可以降低高吸水保水材料的成本,增加材料的复合功能。利用竹材加工剩余物为原材料,接枝丙烯酸、丙烯酰胺单体制备耐盐性高吸水性树脂。以过硫酸钾作为引发剂,通过将单体丙烯酸(AA)在一定条件下接枝到竹纤维上的共聚反应合成吸水性树脂,研究单体中和度、竹粉加入与否、引发剂用量、单体用量、碱液种类等对接枝共聚产物吸水树脂的吸水率的影响。碱液种类选取300.00 g·kg-1氢氧化钠水溶液、丙烯酸中和度为60.0%,引发剂用量为0.04 g,引发剂与单体丙烯酸同时加入、单体丙烯酸的用量为8.0 m L时吸水率高,达718.20 g·g-1。This study was conducted to determine the effects of the degree of neutralization with acrylic acid,the quantity of initiator and acrylic acid to use, whether bamboo fiber should be added or not, and the alkalinity of the water for a super absorbent resin. The super absorbent resin was produced by grafting acrylic acid onto bamboo fibers using potassium peroxodisulfate as an initiator. Results showed the optimum grafting conditions as the following: 60.0% monomer neutralization, 300.00 g·kg-1alkalinity from a sodium hydroxide solution, 0.04 g of potassium peroxodisulfate, and 8.0 m L acrylic acid. With optimum conditions the water absorption was about 718.20 g·g-1.

关 键 词：木材科学与技术 吸水树脂 吸水率 接枝共聚 单体中和度 

分 类 号：S781.9[农业科学—木材科学与技术]