Functionalized Graphenes and Thermoplastic Nanocomposites Based upon Expanded Graphite Oxide

被引：446

作者：

Steurer, Peter ^{[1
,3
]}

Wissert, Rainer ^{[1
,3
]}

Thomann, Ralf ^{[1
,3
]}

Muelhaupt, Rolf ^{[1
,2
,3
]}

机构：

[1] Univ Freiburg, Freiburger Mat Forschungszentrum, D-79104 Freiburg, Germany

[2] Freiburg Inst Adv Studies FRIAS, D-79104 Freiburg, Germany

[3] Univ Freiburg, Inst Makromol Chem, D-79104 Freiburg, Germany

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2009年 / 30卷 / 4-5期

关键词：

electrical conductivity; graphene; graphite; nanocomposite; polycarbonate; poly(propylene); SAN; EXFOLIATION; NANOPLATELETS; DISPERSIONS; MORPHOLOGY; COMPOSITE; SHEETS;

D O I：

10.1002/marc.200800754

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Exfoliation of expanded GO represents an attractive route to functionalized graphenes as versatile 2D carbon nanomaterials and components of a wide variety of polymer nanocomposites. Thermally reduced graphite oxides (TrGO) with specific surface areas of 600 to 950 m(2) . g(-1) were obtained by oxidation of graphite followed by thermal expansion at 600 degrees C. Thermal post treatment at 700 degrees C and 1000 degrees C increased carbon content (81 to 97 wt.-%) and lowered resistivity (1600 to 50 Omega . cm). During melt extrusion with PC, iPP, SAN and PA6, exfoliation afforded uniformly dispersed graphenes with aspect ratio > 200. In comparison to conventional 0D and 1D carbon nanoparticles, TrGO afforded nanocomposites with improved stiffness and lower percolation threshold. Recent progress and new strategies in development of functionalized graphenes and graphene-based nanocomposites are highlighted.

引用

页码：316 / 327

页数：12

共 44 条

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