高吸水树脂研背究景与意义.docVIP

本论文的研究目的就是充分利用纤维素这一可再生资源，在保留其原有吸水结构的基础上，通过接枝共聚改性使其亲水基团多样化，合成具有多种亲水基团的多元高吸水性树脂，在合成工艺和吸水性能方面进行一些探索研究。纤维素主链的半刚性和良好的延展性能使合成的高吸水性树脂网络的稳定性和膨胀性能更好，起到桥梁作用，增加网络空间，提高树脂的吸水性能。其研究意义在于，从20世纪60年代开始，高吸水性树脂是发展起来的新型功能高分子材料。它的吸水保水性能非常优异，同时又具备高分子材料的优点，有良好的加工性能和使用性能，现已广泛应用于工业、农业、食品、医疗卫生、生活用品和环境保护等领域。 本研究在保持纤维素原有吸水结构的基础上，对其进行接枝共聚改性，用羧甲基纤维素接枝丙烯酸和丙烯酰胺制备多元高吸水树脂，并测出树脂的吸水倍数，考察一些因素对吸水倍数的影响，找出最佳实验方案。 制备多元高吸水性树脂的优化条件：羧甲基纤维素用量为1g，丙烯酸用量为4g，丙烯酸和丙烯酰胺的质量比为1:1，交联剂为0.04g，引发剂为0.18g，丙烯酸中和度为60%，反应温度为50℃，反应时间1.5h。 This thesis research purpose is to make full use of cellulose this renewable resources, keep its original in water, based on the structure of modification made by grafting polymerization hydrophilic groups, diversification, the synthesis of hydrophilic groups of multiple superabsorbent resin in synthesis process and bibulous, search some properties. The main chain of cellulose of semi-rigid and good ductility can make synthetic superabsorbent network stability and expansion, have better performance bridge, increase network space, improve the resin absorption ability. The research significance lies in the 1960s, from the start, the rise and development of superabsorbent resin is the new functional polymer materials. It is very outstanding, water retention performance but have the advantages of polymer materials, have good processing and workability, has been widely used in industry, agriculture, food, medicine and health, supplies and environmental protection etc. This study in keep cellulose based on the structure of the original water, and carry on the grafting polymerization modification, with carboxymethyl cellulose grafted acrylic and acrylamide preparation multivariate tall bibulous colophony, and measure the resin, examine some water to multiple factors influence of absorbing multiples, find out the best experiment scheme. Preparation multivariate superabsorbent resin optimality conditions: carboxymethyl cellulose dosage, acrylic dosage for 1g for 4g, acrylic and acrylamide quality rat