| 학회 |
한국화학공학회 |
| 학술대회 |
2012년 봄 (04/25 ~ 04/27, 제주 ICC) |
| 권호 |
18권 1호, p.960 |
| 발표분야 |
재료 |
| 제목 |
Preparation and properties of highly conductive HRG-PMMA nanocomposites by Solution blending and In-Situ polymerization method |
| 초록 |
Graphene polymer nanocomposites have been in the focus of many investigations in the last few years due their exceptional thermal, mechanical and electrical properties. The present work reports the preparation and properties of Poly Methyl Methacrylate/Highly Reduced Graphene (PMMA/HRG) nanocomposites by in-situ and solution blending polymerization method. The in-situ polymerization was carried out at 70 0C for 24 hrs under N2 atmosphere in the presence of monomer and initiator while in case of solution blending HRG sheets were blended with PMMA by stirring and sonication at 700C. The electrical conductivity measurement in case of in-situ polymerization shows lowest percolation threshold at lower filler loading which appeared at 0.25 wt% (0.08 S/m). However solution blending has 0.65 wt% (0.039 S/m). The highest conductivity of 34 S/m was achieved in case of in-situ which is much higher in comparison of solution blending (26 S/m at 2.5 wt %.). In both the methods, the glass transition temperature (Tg) values were found in the range of 112 oC to 118 oC with similar thermal stability and polymer-filler attraction. |
| 저자 |
Balasubramaniyan, Pham Viet Hung, Dang Thanh Truong, 장진희, Singh Kuldeep, 정진석
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| 소속 |
울산대 |
| 키워드 |
HRG; PMMA; Nanocomposites; conductivity
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| E-Mail |
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| 원문파일 |
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