• 文献标题:   Tuning of shear thickening behavior and elastic strength of polyvinylidene fluoride via doping of ZnO-graphene
  • 文献类型:   Article
  • 作  者:   GOSWAMI MR, SINGH P, CHAMOLI P, BHARDWAJ S, RAINA KK, SHUKLA RK
  • 作者关键词:   continuous shear thickening, discontinues shear thickening, hydrocluster, microwave synthesi, poly vinylidene fluoride, polymersnanocomposite, zno grafted graphene core
  • 出版物名称:   JOURNAL OF APPLIED POLYMER SCIENCE
  • ISSN:   0021-8995 EI 1097-4628
  • 通讯作者地址:  
  • 被引频次:   5
  • DOI:   10.1002/app.51260 EA JUN 2021
  • 出版年:   2021

▎ 摘  要

ZnO rice like nonarchitects are grafted on the graphene carbon core via a rapid microwave synthesis route. The prepared grafted systems are characterized via XRD, SEM, RAMAN, and XPS to examined the structural and morphological parameters. Zinc oxide grafted graphene sheets (ZnO-G) are further doped in beta-phase of polyvinylidene fluoride (PVDF) to prepare the polymer nanocomposites (PNCs) via mixed solvent approach (THF/DMF). beta-phase confirmation of PVDF PNCs is done by FTIR studies. It is observed that ZnO-G filler enhances the beta-phase content in the PNCs. Non-doped PVDF and PNCs are further studied for rheological behavior under the shear rate of 1-100 s(-1). Doping of ZnO-G dopant to the PVDF matrix changes its discontinuous shear thickening (DST) behavior to continues shear thickening behavior (CST). Hydrocluster formation and their interaction with the dopant could be the reason for this striking DST to CST behavioral change. Strain amplitude sweep (10(-3)% -10%) oscillatory test reveals that the PNCs shows extended linear viscoelastic region with high elastic modulus and lower viscous modulus. Effective shear thickening behavior and strong elastic strength of these PNCs present their candidature for various fields including mechanical and soft body armor applications.