• 文献标题:   In Situ Synthesis of Ultrahigh Molecular Weight Polyethylene/Graphene Oxide Nanocomposite Using the Immobilized Single-site Catalyst
  • 文献类型:   Article
  • 作  者:   HEIDARI A, TALEBI S, REZAEI M, KESHAVARZMIRZAMOHAMADI H, JAFARIYEHYAZDI E
  • 作者关键词:   disentangled, immobilization, nanocomposite, singlesite catalyst, ultrahigh molecular weight polyethylene
  • 出版物名称:   POLYMERPLASTICS TECHNOLOGY ENGINEERING
  • ISSN:   0360-2559 EI 1525-6111
  • 通讯作者地址:   Sahand Univ Technol
  • 被引频次:   1
  • DOI:   10.1080/03602559.2017.1381246
  • 出版年:   2018

▎ 摘  要

We address the immobilization of single-site catalyst on the graphite oxide (GO) surface using methylaluminoxane. Ethylene polymerization was performed using the immobilized catalyst and the nanocomposite of ultrahigh molecular weight polyethylene (UHMWPE)/GO with less entanglement density was obtained. It was observed that the drawability, mechanical and thermal properties of the produced polymer significantly are affected by the anchoring of polymer chains to the GO nanosheets. The orientation and location of crystalline lamellae and nanosheets were verified by microscopic techniques. Besides, X-ray analysis demonstrated the dispersion of GO within the UHMWPE phase and crystallinity of UHMWPE/GO nanocomposites enhanced during drawing process. [GRAPHICS]