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http://dx.doi.org/10.7317/pk.2013.37.4.507

Preparation of Graphene/Waterborne Polyurethane Nanocomposite through in-situ Polymerization  

Cha, Ji-Jung (Division of Advenced Materials Engineering, Kongju National University)
Yim, Jin-Heong (Division of Advenced Materials Engineering, Kongju National University)
Publication Information
Polymer(Korea) / v.37, no.4, 2013 , pp. 507-512 More about this Journal
Abstract
A graphene/waterborne polyurethane (WPU) nano composite was prepared by in-situ polymerization of PU and graphene having isocyanate (iGO) group in order to improve physicochemical/electrical characteristics. The properties of the graphene/WPU nanocomposite can effectively be enhanced as compared pristine WPU; up to 57% of tensile strength and $10^2$ fold of electrical conductivity with introduction of 2 wt% graphene. In addition, mechanical/electrical properties of the graphene/WPU nanocompsite were higher than those of graphene/WPU composite prepared by a simple physical blend method. It might attribute to homogeneous dispersion of iGO in the WPU matrix via covalent bonds and hydrogen bonds between WPU and iGO from the results of morphological analysis by scanning electron microscopy (SEM).
Keywords
in-situ polymerization; graphene; waterborne polyurethane; composite;
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