期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 107, 期 2, 页码 1163-1168出版社
JOHN WILEY & SONS INC
DOI: 10.1002/app.27153
关键词
mechanical properties; nanocomposites; polyesters; reinforcement; rheology
资金
- National Research Foundation of Korea [05-2006-00-010-00] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Poly(ethylene terephthalate) (PET)/multiwalled carbon nanotube (MWCNT) composites were prepared by in situ polymerization. To improve the dispersion of MWCNTs in the PET matrix, functionalized MWCNTs having acid groups (acid-MWCNTs) and acetic groups (acetic-MWCNTs) on their surfaces were used. The functional groups were confirmed by infrared spectrometry. Scanning electron microscopy showed that acetic-MWCNTs had a better dispersion in the PET matrix than pristine MWCNTs and acid-MWCNTs. A reaction between PET and acetic-MWCNTs was confirmed by a shift of the Raman G band to a higher frequency and an increase of the complex viscosity in the rheological properties. The composites containing functionalized MWCNTs showed a large increase in their tensile strengths and moduli. The values of the strengths and moduli of the PET/acetic-MWCNT composites were higher than those of the PET/acid-MWCNT composites. (C) 2007 Wiley Periodicals, Inc.
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