# DEGRADATION AND DYNAMIC PROPERTIES OF POLY(AMIDE-CO-IMIDE)/CARBON NANOTUBE COMPOSITE FILMS

> Title: DEGRADATION AND DYNAMIC PROPERTIES OF POLY(AMIDE-CO-IMIDE)/CARBON NANOTUBE COMPOSITE FILMS Page Range: p.381-390 Author(s): Seung Hwan Lee; Sheong Hyun Choi; Seong Yun Kim; Jin Il Choi; Jae Rock Lee; Jae Ryoun Youn File size: 345K Download the pdf (subscribers only) Buy the...

Canonical URL: https://polymerjournals.com/degradation-and-dynamic-properties-of-polyamide-co-imide-carbon-nanotube-composite-films/
Published: 2010-07-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: DEGRADATION AND DYNAMIC PROPERTIES OF POLY(AMIDE-CO-IMIDE)/CARBON NANOTUBE COMPOSITE FILMS**
 Page Range: p.381-390
 Author(s): Seung Hwan Lee; Sheong Hyun Choi; Seong Yun Kim; Jin Il Choi; Jae Rock Lee; Jae Ryoun Youn
 File size: 345K
 ![](http://dload.gif) [Download the pdf](http://journals.asp?Page=111&JournalDownload=ON&JournalType=ppc&JournalIssue=ppc18-7&JournalID=101388&JIP=) (subscribers only)
 ![](http://handbuy.gif) Buy the pdf (non-subscribers)
 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 18
 Issue No: No.7

**Abstract**
 Poly(amide-imide) (PAI)/carbon nanotube (CNT) composite films were investigated through FT-IR spectroscopy, TGA, and DMTA measurements in order to understand the interrelationships of surface modification of CNTs, thermal imidisation time, and thermal stability after they were prepared by solution mixing. Thermal stability and glass transition temperature were significantly improved when the PAI/CNT nanocomposites were filled with hydrogen peroxide treated CNTs (p-CNT) because the dispersion of p-CNTs and interfacial bonding between p-CNT particles and PAI molecules were improved. The imidisation time of the PAI/p-CNT composite film needed for sufficient imidisation reaction was reduced by about 3 hours compared with that of the pure PAI film, because p-CNTs have higher thermal conductivity than the pure PAI resin. They also showed the highest glass transition temperature among all PAI/CNT composites since p-CNTs have many hydrophilic functional groups which yield strong interaction with PAI molecules. It was found that the thermal imidisation depended on the network structure which was generated by the crosslinking reaction and surface modification of CNTs. 26 Refs.

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