Synthesis and characterization of amorphous poly(ethylene terephthalate) copolymers containing

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Accession number:20090211853728

Title: Synthesis and characterization of amorphous poly(ethylene terephthalate) copolymers containing bis[4-(2-

hydroxyethoxy)phenyl]sulfone

Authors: Tsai, Yuhsin (1); Fan, Cheng-Hsing (1); Hung, Chi-Yuan (1);

Tsai, Fuu-Jen (2)

Author affiliation:(1) Nano-Powder and Thin Film Technology Center, Industrial Technology Research Institute, Tainan, Taiwan; (2)

Graduate Institute of Chinese Medical Science, China Medical University, Taichung, Taiwan; (3) Department of Medical Genetics, Pediatrics and Medical Research, China Medical University Hospital, Taichung, Taiwan; (4) Department of Biotechnology and

Bioinformatics, Asia University, Taichung, Taiwan Corresponding author:Tsai, Y.

([email protected])

Source title: European Polymer Journal Abbreviated source title:Eur Polym J Volume:45

Issue:1

Issue date:January 2009 Publication year:2009 Pages:115-122

Language:English ISSN:00143057 CODEN:EUPJAG

Document type:Journal article (JA)

Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

Abstract:Poly(ethylene terephthalate) copolymers (abbreviated as PETS) that contain bis[4-(2-hydroxyethoxy)phenyl]sulfone (BHEPS) were prepared from dimethyl terephthalate (DMT), ethylene glycol (EG) (5-95%) and BHEPS (5-95%). The compositions and

microstructures of the copolyesters were determined by

<sup>1</sup>H and <sup>13</sup>C nuclear magnetic

resonance (NMR) spectroscopy, respectively. The thermal behaviors were studied over the entire range of copolymer compositions, using X-ray analysis, differential scanning calorimeter (DSC) and

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thermogravimetric analysis (TGA). The molecular weights, optical characteristics and tensile properties of these polymers were also determined. Experimental results indicated that the copolymers had a random microstructure. The intrinsic viscosities of the copolymers ranged from 0.65 to 0.69 dL/g. The copolyesters with BHEPS of

<10 mol% were crystallizable, whereas the copolyesters with BHEPS of ≥10 mol% were amorphous. Incorporating BHEPS affected the glass-transition temperature (T<inf>g</inf>) values of those polymers, from about 81 °C for PETS<inf>5</inf> to 126

°C for PETS<inf>95</inf>. The optical transmissions exceeded 86% for λ = 400 nm for all of the amorphous polyesters.

Number of references:24

Main heading:Copolymerization

Controlled terms: Copolymers - Differential scanning calorimetry - Ethylene - Ethylene glycol - Glass transition - Glycols - Gravimetric analysis - Laser interferometry - Magnetic resonance -

Microstructure - Nuclear magnetic resonance - Nuclear magnetic resonance spectroscopy - Plastic products - Polyethylene

terephthalates - Polymers - Thermogravimetric analysis

Uncontrolled terms: Amorphous - Amorphous polies - Co polyesters - Copolymer compositions - Differential scanning calorimeters -

Dimethyl terephthalates - Elongation at breaks - Intrinsic viscosities - NMR - Optical characteristics - Optical transmissions - Phenyl sulfones - Poly(ethylene terephthalate) copolymer - Random

microstructures - Ray analyses - Synthesis and characterizations - Tensile modulus - Thermal behaviors - Transition temperatures

Classification code:815.2 Polymerization - 817.1 Polymer Products - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 815.1.1 Organic Polymers - 932.2 Nuclear Physics - 941.4 Optical Variables Measurements - 944.6 Temperature Measurements - 951 Materials Science - 933 Solid State Physics - 815.1 Polymeric Materials - 641.1 Thermodynamics - 701.2

Magnetism: Basic Concepts and Phenomena - 741.3 Optical Devices and Systems - 743.2 Holographic Applications - 531.2 Metallography - 744.9 Laser Applications - 801.4 Physical Chemistry - 802.3

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Chemical Operations - 804.1 Organic Compounds - 801 Chemistry DOI:10.1016/j.eurpolymj.2008.10.007

Database:Compendex