# EFFECTS OF MWNTS-COOH ON THE COMBUSTION BEHAVIOUR AND THE FLAME RETARDANCY PROPERTIES OF PET

> Title: EFFECTS OF MWNTS-COOH ON THE COMBUSTION BEHAVIOUR AND THE FLAME RETARDANCY PROPERTIES OF PET Page Range: p.9-14 Author(s): Jianjun Zhang; Jingzong Zhang; Quan Ji; Liwen Tan; Yanzhi Xia; Qingshan Kong File size: 269K Download the pdf (subscribers only) Buy the pdf...

Canonical URL: https://polymerjournals.com/effects-of-mwnts-cooh-on-the-combustion-behaviour-and-the-flame-retardancy-properties-of-pet/
Published: 2011-01-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: EFFECTS OF MWNTS-COOH ON THE COMBUSTION BEHAVIOUR AND THE FLAME RETARDANCY PROPERTIES OF PET**
 Page Range: p.9-14
 Author(s): Jianjun Zhang; Jingzong Zhang; Quan Ji; Liwen Tan; Yanzhi Xia; Qingshan Kong
 File size: 269K
 ![](http://dload.gif) [Download the pdf](http://journals.asp?Page=111&JournalDownload=ON&JournalType=ppc&JournalIssue=ppc19-1&JournalID=101248&JIP=) (subscribers only)
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 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 19
 Issue No: No.1

**Abstract**
 Novel carboxyl-modified MWNTs-containing PET nanocomposites (PET/MWNTs-COOH) were successfully prepared via an in-situ method. Thermal stability and flame-retardancy properties of PET/MWNTs-COOH nanocomposites were investigated by cone calorimetry (CONE), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). The CONE calorimetry results showed that PET/MWNTs-COOH had a lower heat release rate (HRR) and total smoke production (TSR), compared with those of pure PET. TGA indicated that the incorporation of MWNTs-COOH increased the char residues and improved the thermal stability of pure PET. SEM images of the char crusts showed that PET/MWNTs-COOH formed more continuous and thicker char residues than those formed with pure PET during combustion. The above results indicated that combustion behaviour and flame retardancy properties of the MWNTs-COOH/PET nanocomposites were sufficiently enhanced that MWNTs-COOH could act as a flame retardancy agent for a PET matrix. Condensed phase and gas phase mechanisms were proposed for the PET/MWNTs-COOH flame-retardancy effect. 20 Refs.

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