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Park, Lee Soon
School of Materials Science and Engineering
Research Interests
  • Flexible OLED new materials, process and fabrication
  • Touch Screen Panel(TSP) new materials and process new materials and process
  • Nano-materials synthesis and application (Ag nano-wire and metal mesh electrode)

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Melt polymerization of copoly(ethylene terephthalate-imide)s and thermal properties

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Title
Melt polymerization of copoly(ethylene terephthalate-imide)s and thermal properties
Author
Park, Lee SoonDo, Jeong HoeLee, Dong Chan
Keywords
Decomposition; Molecular weight; Oligomers; Polycondensation; Polyethylene terephthalates; Substitution reactions; Temperature; Thermodynamic properties; Thermogravimetric analysis
Issue Date
1996-06
Publisher
WILEY-BLACKWELL
Citation
JOURNAL OF APPLIED POLYMER SCIENCE, v.60, no.12, pp.2059 - 2067
Abstract
Copoly(ethylene terephthalate-imide)s (PETI) were prepared by melt polycondensation of bis(2-hydroxyethyl)terephthalate (BHET) and imide containing oligomer, i.e., 4,4'-bis[(4-carbo-2-hydroxyethoxy)phthalimido]diphenylmethane (BHEI). The apparent rate of polycondensation reaction was faster than that of homo poly(ethylene terephthalate) (PET) due to the presence of imide units. The PETI copolymers with up to 10 mol % of BHEI unit in the copolymer showed about the same molecular weight and carboxyl end group content as homo PET prepared under similar reaction conditions. The increase in T-g of copolymer was more dependent on molar substitution of BHEI than on substitution of BHEN, reaching 91 degrees C with 8 mol % BHEI units in the copolymer from T-g = 78.9 degrees C of homo PET. In the case of PETN copolymer, 32 mol % of bis(2-hydroxyethyl)naphthalate (BHEN) units gave T-g of 90 degrees C. The maximum decomposition temperature of PETI copolymer was about the same as that of homo PET by TGA analysis. The char yield at 800 degrees C was higher than that of homo PET. (C) 1996 John Wiley & Sons, Inc
URI
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DOI
10.1002/(SICI)1097-4628(19960620)60:12<2059::AID-APP3>3.0.CO;2-L
ISSN
0021-8995
Appears in Collections:
MSE_Journal Papers
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