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RESEARCH ARTICLE
Contents Vol 70(6)

Preparation and Characterization of PA6-PEG/Li High Performance Static Dissipation Composites

Chongling Yang A D , Shouzai Tan A , Gengen Chen C and Litao Guan B D E
+ Author Affiliations
- Author Affiliations

A Department of Chemical Engineering, Guangdong Industry Technical College, Guangzhou 510300, China.

B College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China.

C School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China.

D Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA.

E Corresponding author. Email: ltguan@scau.edu.cn

Australian Journal of Chemistry 70(6) 669-676 https://doi.org/10.1071/CH16288
Submitted: 12 May 2016  Accepted: 23 September 2016   Published: 19 October 2016

Abstract

A copolymer of PA6 (polyamide 6) and PEG (polyethylene glycol) was synthesized by a condensation reaction. The optimal reaction conditions were determined as the following: a reaction temperature of 255°C, –0.04 MPa vacuum, and a condensation time of 40 min. A series of novel PA6-PEG/Li composites were developed by melt blending the PA6-PEG copolymer (10 wt-% PEG) with three different kinds of colourless lithium salts (LiCl, C18H35LiO2, LiAc). FT-IR, NMR, thermogravimetric (TGA), electronic universal testing, and resistivity analyses were employed to investigate the comprehensive properties of the copolymers and composites. The results of FT-IR and 1H NMR analyses revealed that the PEG was copolymerized with PA6 successfully. TGA results indicated that the decomposition temperature of the PA6-PEG copolymer was above 350°C. Resistivity testing revealed that the surface resistivity (Rs) of the copolymer decreased from 1 × 1014 to 5.67 × 109 Ω square–1 with an increase of the content of PEG. The PA6-PEG/LiCl composite showed an excellent static dissipation performance of 2.71 × 108 Ω square–1.


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