Preparation of high performance PP/ reduced graphene oxide nanocomposites through a combined in situ polymerization and masterbatch method

Polyolefins Journal

Seung-Ri Lee¹  Dong-Ho Lee¹  Keun-Byoung Yoon¹  He-Xin Zhang²  Xue-Quan Zhang³ 

[1] Department of Polymer Science and Engineering, Kyungpook National University, Korea;Department of Polymer Science and Engineering, Kyungpook National University, Korea

[2] Key Lab. of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academic of Science, China;Key Lab. of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academic of Science, China;

关键词: polypropylene;    nanocomposites;    in-Situ Polymerization;    graphene;   

DOI  :  10.22063/poj.2016.1375

来源: DOAJ

【 摘 要 】

Despite the great potential of graphene as a nanofiller, achieving homogeneous dispersion remains the key challenge for effectively reinforcing polyolefin (such as polyethylene (PE) and polypropylene (PP)) nanocomposites. Therefore, in this research, we report a facile combined in situ polymerization and masterbatch method for fabricating PP/reduced graphene oxide (rGO) nanocomposites. In the polymerization stage, the synthesized catalyst exhibited a very high activity toward propylene polymerization, while the resultant PP/rGO with a very high isotactic index (I.I. = 99.3), broad molecular weight distribution (Mw/Mn = 14.9), and thermal stability was produced. After meltblending with commercial PP, a significantly increased modulus along with no observable change in tensile strength and elongation-at-break were achieved via the addition of a very small amount of rGO; these properties resulted from the suitable dispersion and good interface adhesion of the graphene sheet and PP matrix. Thus, this work provides a method for production of high performance PP.

【 授权许可】

Unknown