膨润土
过硫酸钾
聚丙烯酸钠
材料科学
聚合
单体
丙烯酸
化学工程
高分子化学
高吸水性高分子
聚电解质
核化学
化学
聚合物
有机化学
复合材料
原材料
工程类
作者
Zhang Ji,Kun Yuan,Yun‐Pu Wang,GU Sheng-jiu,Shengtang Zhang
标识
DOI:10.1016/j.matlet.2006.04.055
摘要
Polyacrylate intercalated bentonite superabsorbent hybrid had been prepared by means of solution polymerization with intercalating, polymerizing and crosslinking reaction. The partially neutralized acrylic acid (NaA) was intercalated, polymerized and crosslinked to bentonite. The initiator was potassium persulfate and the crosslinking agent was sugar. The structure of the polyacrylate/hybrid was determined by FT-IR and XRD. The results showed that bentonite was intercalated by polyacrylate. The layers' spacing of bentonite was enlarged. The various factors, such as the degree of neutralization, the consumption of monomer, the amount of initiator and crosslinking agent and the amount of bentonite, which affected the resin's water absorbency, were studied through orthogonal experiments. The optimum conditions showed that the ratio (wt) of bentonite to monomer was 1/2, the degree of neutralization was 75% (mol), the initiator content was 3%, and the crosslinker content was 5%. The cost of the superabsorbent has decreased by 30%, whereas its water absorbency was about 120 g/g for water, and 30–36 g/g for saline solution.
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