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| Type |
Poster Presentation |
| Area |
Material Chemistry |
| Room No. |
Exhibition Hall 2+3 |
| Time |
10월 19일 (목요일) 11:00~12:30 |
| Code |
MAT.P-386 |
| Subject |
Hyperbranched Polyglycerol-Grafted Graphene Oxide as a Reinforcing Material for Flexible Poly(vinyl chloride) |
| Authors |
Kyu Won Lee, Seung-Yeop Kwak*
Department of Materials Science and Engineering, Seoul National University, Korea
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| Abstract |
We present a graphene oxide (GO) grafted with hyperbranched polyglycerol (HPG) as an effective reinforcing filler for flexible poly(vinyl chloride) (PVC). The HPG-grafted GO (HGO) is facilely synthesized by surface-initiated ring-opening polymerization of glycidol and followed by butyl esterification. The obtained HGO exists as an individually exfoliated nanosheet and possesses many functional groups, capable of interacting with PVC. Owing to the uniform dispersion of HGO and strong interfacial interactions between HGO and PVC, the PVC/HGO composites exhibit enhanced tensile strength and toughness compared with pristine PVC. In particular, the stretchability and ductility of PVC/HGO films are similar with the corresponding properties of pristine PVC film because the grafted HPG could act like a plasticizing agent at the interfaces. Furthermore, 2D planar structure and homogeneous dispersion of HGO provide high tortuous path to the composites, resulting in remarkably reduced oxygen permeability, more than 60% lower than that of pristine PVC only at low loading of HGO. |
| E-mail |
visavisa1203@naver.com |
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120th General Meeting of the KCS