Synthesis of Ultrahigh Molecular-Weight Poly(ethylene Terephthalate).
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER
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This study was conducted to synthesize polyethylene terephthalate or PET of number-average molecular weight of the order of 120 000. PET of number-average molecular weight of the order of 120 000 was prepared with a gas chromatograph apparatus through solid-state polymerization technology. PET particles were packed in the column, heated to a temperature somewhat below the melting temperature, and flushed with a carrier gas until the desired molecular weight was reached. Parameters studied were the catalyst, the particle size, the molecular weight of the starting material, the reaction temperature and time, and the flow rate and nature of the carrier gas.
- Polymer Chemistry
- Organic Chemistry
- Physical Chemistry
- Atomic and Molecular Physics and Spectroscopy