论文部分内容阅读
在水溶液中,以丙烯酸(AA)、羧甲基纤维素(CMC)和聚乙二醇(PEG)为原料,N,N’-亚甲基双丙烯酰胺(MBA)为交联剂,用辉光放电电解等离子体(GDEP)技术引发制备羧甲基纤维素/聚乙二醇/丙烯酸(CMC/PEG/AA)高吸水性复合材料。考察了温度、pH、盐浓度对复合材料平衡溶胀率的影响,初步研究了复合材料对染料亚甲基蓝的吸附行为。结果表明,CMC/PEG/AA高吸水性复合材料在30℃蒸馏水中的最大溶胀率达到1 115 g/g;该复合材料具有pH敏感性、盐敏感性和可逆溶胀-消溶胀开关行为;其对亚甲基蓝的吸附量可达1 878.8 mg/g,吸附行为遵循动力学拟二级模型。
In the aqueous solution, acrylic acid (AA), carboxymethyl cellulose (CMC) and polyethylene glycol (PEG) as raw materials, N, N’- methylene bisacrylamide (MBA) Light-Discharge Electrolyzed Plasma (GDEP) Technology Initiates Preparation of Carboxymethylcellulose / Polyethylene Glycol / Acrylic Acid (CMC / PEG / AA) Superabsorbent Composites. The effects of temperature, pH and salt concentration on the equilibrium swelling ratio of the composite were investigated. The adsorption behavior of the composite to methylene blue dye was studied. The results showed that the maximum swelling rate of CMC / PEG / AA superabsorbent composite reached 1115 g / g in distilled water at 30 ℃. The composite possesses pH sensitivity, salt sensitivity and reversible swelling-deswelling switch behavior. Adsorption of methylene blue up to 1 878.8 mg / g, adsorption behavior to follow the second-order kinetic model.