Effect of Carbon Particles with Different Topological Shape on the Rheological Behavior of PVA Aqueous Dispersion

作     者：Qing-Sheng Ni Miao Du Guo-Rong Shan Yi-Hu Song Qiang Zheng Qing-Sheng Ni;Miao Du;Guo-Rong Shan;Yi-Hu Song;Qiang Zheng

作者机构：State Key Laboratory of Chemical EngineeringCollege of Chemical and Biological EngineeringZhejiang UniversityHangzhou310027China Institute of Zhejiang University-QuzhouQuzhou324000China Ministry of Education Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou310027China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2022年第40卷第11期

页      面：1402-1410页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：financially supported by the National Natural Science Foundation of China(Nos.51873180,52173024 and 51673172) Zhejiang Provincial Natural Science Foundation of China(No.LGF20B040001) 

主　　题：Topological shape Hydrogen bond Rheological behavior PVA aqueous dispersion 

摘      要：Poly(vinyl alcohol)(PVA)is usually processed and used in a form of aqueous dispersion.A large number of inter-and intramolecular hydrogen bonds make it very difficult to obtain suitable rheological behavior for *** this study,carbon particles with different topological shapes were added into PVA aqueous dispersion to tune the steady and dynamic rheological *** results show that the zero-dimensional particles(carbon black,CB)increase monotonically the zero-shear viscosity of PVA dispersion,while the one-dimensional particles(carbon nanotubes,CNTs)make it first increase,and then decrease and rise again,like an N-shape,and the two-dimensional particles(graphene oxide,GO)can make it first decrease and then increase,exhibiting a *** is believed that the topological shape of the carbon particles brought about these *** zero-dimensional particles mainly act as physical crosslinking points due to their small *** at a certain content,both CNTs and GO can destroy the intermolecular hydrogen bonds between PVA chains because the PVA chains can twine around the slim CNTs and the large planar size of GO prevents the adsorbed PVA from forming hydrogen bond with other *** high hydroxyl value of carbon particle surface could strengthen this *** is expected that the viscosity of polymer dispersion can be regulated by particles with different topological shape and the surface characteristic,so as to widen the operable concentration range during preparing composite functional materials.