Integration of block copolymer-wrapped single-wall carbon nanotubes into a trifunctional epoxy resin. Influence on thermal performance

详细信息    查看全文

• 作者：Jose M. Gonzá ; lez-Domí ; nguez ; Alej ; ro Ansó ; n-Casaos ; Pere Castell ; Ana M. Dí ; ez-Pascual ; Mohammed Naffakh ; Gary Ellis ; Mariá ; n A. Gó ; mez ; M. Teresa Martí ; nez
• 关键词：Wrapped carbon nanotubes ; Epoxy resin ; Thermo-oxidative performance ; Block copolymers ; Nanocomposites
• 刊名：Polymer Degradation and Stability
• 出版年：2010
• 出版时间：October 2010
• 年：2010
• 卷：95
• 期：10
• 页码：2065-2075
• 全文大小：983 K

文摘

Novel nanocomposite materials were prepared by incorporating block copolymer-wrapped single-wall carbon nanotubes (SWCNTs) into a trifunctional epoxy resin. The work was focused on the study of the influence of the SWCNTs and the block copolymer based on ethylene oxide and propylene oxide, Pluronic F68, on the thermal and thermo-oxidative cleavage reactions of the resin. A nanocomposite sample containing 2 wt % Pluronic-wrapped SWCNTs was prepared and its behaviour compared with that of Pluronic/epoxy and SWCNT/epoxy composites. Their thermal performance in both oxidative and inert atmospheres was evaluated by different techniques including thermogravimetric analysis (TGA), mass spectrometry and infrared spectroscopy. A kinetic study of the TGA data in both atmospheres based on the Vyazovkin’s advanced isoconversional method showed differences in the activation energies. Infrared spectroscopy of residues extracted at various steps during dynamic heating indicated a common degradation mechanism for all samples, and improved thermo-oxidative performance in the nanocomposite containing Pluronic-wrapped SWCNTs.