Preparation of Cationic Waterborne Polyurethane Functionalized Graphene and Its Modification on Polyurethane Elastomers

被引：0
|
作者：
Jiang Y. [1 ]
Zhao H. [1 ]
Zhao T. [1 ]
Li Z. [1 ]
机构：
[1] Key Laboratory of Eco-Chemical Engineering of State Cultivation Base, Qingdao University of Science and Technology, Qingdao
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2019年 / 35卷 / 09期
关键词：
Composite; Mechanical properties; Oxidized graphene; Surface modification;
D O I：
10.16865/j.cnki.1000-7555.2019.0258
中图分类号：
学科分类号：
摘要：
Polyurethane functionalized graphene oxide (MGO) was prepared by surface modification of graphene oxide (GO) with self-made cationic waterborne polyurethane resin. MGO/polyurethane (MGO/PU) hybrid elastomers were synthesized by in-situ polymerization. The structure and properties of MGO and its effect on polyurethane were characterized by FT-IR, XRD, TG, DSC, TEM, SEM and other methods. The results show that GO is successfully modified by waterborne polyurethane. Its interlayer spacing becomes larger, the number of layers is reduced, the water solubility changes into oil-soluble, and the ordered crystal structure is transformed into a disordered structure. The addition of MGO reduces the glass transition temperature of the soft segments of the polyurethane elastomer and enhances the fastest decomposition temperature of the soft segments and hard segments of PU. The tensile strength of MGO/PU elastomers reaches 50.6 MPa, far more than that of PU and GO/PU. SEM images of the elastomer section shows that MGO nanoparticles are uniformly dispersed in the MGO/PU composites, and the interaction between the MGO nanoparticles and PU is significantly increased. © 2019, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：150 / 156
页数：6
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