甲苯二异氰酸酯与乙二胺沉淀聚合一步法制备聚脲多孔材料及其表征

发布时间：2018-01-04 04:04

本文关键词：甲苯二异氰酸酯与乙二胺沉淀聚合一步法制备聚脲多孔材料及其表征　出处：《高分子学报》2016年03期 　论文类型：期刊论文

【摘要】：以甲苯二异氰酸酯和乙二胺为单体,通过沉淀聚合一步到位制备了富含胺基的聚脲多孔材料.探讨了反应时间、溶剂种类及混合溶剂配比对聚脲多孔材料性能的影响.通过BET和压汞法对聚脲多孔材料的孔结构进行了表征,用扫描电子显微镜表征了材料的形貌,用X-射线衍射仪测试了材料的结晶性能.结果表明,聚合反应进行48 h后多孔材料的胺基含量不再变化,所得聚脲为典型多孔材料且部分结晶.与丙酮相比,以乙腈作反应介质制备的聚脲的比表面积和孔体积较大,孔径分布较宽.以乙腈和丙酮混合溶剂作反应介质,通过改变混合溶剂的配比可以改变材料的孔结构.
[Abstract]:Polyurea porous materials with rich amines were prepared by precipitation polymerization with toluene diisocyanate and ethylenediamine as monomers, and the reaction time was discussed. The pore structure of polyurea porous material was characterized by BET and mercury injection method, and the morphology of polyurea porous material was characterized by scanning electron microscope (SEM). The crystallization properties of the porous materials were measured by X-ray diffractometer. The results showed that the content of amines in the porous materials did not change after 48 h of polymerization. The obtained polyurea is a typical porous material and partially crystallized. Compared with acetone, the polyurea prepared in acetonitrile as reaction medium has larger specific surface area and pore volume. With acetonitrile and acetone as the reaction medium, the pore structure of the material can be changed by changing the proportion of the mixed solvent.
【作者单位】：济南大学化学化工学院;
【基金】：国家自然科学基金(基金号21274054,51473066)资助项目
【分类号】：TQ317;TB383.4
【正文快照】： **通讯联系人,E-mail:chm_zhuxl@ujn.edu.cn多孔材料是由连续的固相骨架和孔洞所组成的材料,依照其骨架的主要组成可分为无机多孔材料[1]、聚合物多孔材料[2,3]以及二者的复合材料[4].按照其孔径大小可分为微孔(孔径d2nm)、介孔(d=2~50 nm)和大孔材料(d50nm)[5].聚合物多孔

【相似文献】