Polymer(Korea), Vol.40, No.2, 188-193, March, 2016
그래핀/폴리카보네이트 복합재료를 함유한 POSS의 합성 및 열적 특성의 분석
Synthesis, Characterization and Investigation of Thermal Properties of POSS Containing Graphene/Polycaprolactone Composites
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In this study, it has been demonstrated that polyhedral oligomeric silsesquioxane (POSS) based graphene-polycaprolactone nanocomposites (POSS-G-PCL) were successfully prepared by using ring opening polymerization method. For this purpose, first, graphene-POSS composite (GP) was synthesized with graphene oxide and aminopropyllsobutyl POSS (POSS-NH2). Second, POSS containing graphene-polycaprolactone composite (PCL-G-POSS) was synthesized by using ε-caprolactone, graphene-POSS, and Tin(II) octanoate as initiator in DMF at 110 oC. This reaction was repeated without of solvent (PCL-G-POSS in bulk) and by using different amount of caprolactone (PCL*-G-POSS). The synthesized composites and polymers were characterized by nuclear magnetic resonance (1H NMR), gel permeation chromatography (GPC), and fourier transform infrared spectroscopy (FTIR). Thermal behaviors of molecules were analyzed by thermogravimetry (TG). The surface morphologies of composites were analyzed by scanning electron microscope (SEM). The results of TG and GPC analyses showed that the thermal stability and molecular weight of the composites were increased with the addition of POSS.
Keywords:polyhedral oligomeric silsesquioxane (POSS);polycaprolactone;graphene;composite;thermal properties
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