Radiation‐induced homogeneous polymerization of ethylene in cyclohexane
作者:
Terutaka Watanabe,
Takeshi Wada,
Masaaki Takehisa,
Sueo Machi,
期刊:
Journal of Polymer Science: Polymer Chemistry Edition
(WILEY Available online 1974)
卷期:
Volume 12,
issue 8
页码: 1609-1618
ISSN:0360-6376
年代: 1974
DOI:10.1002/pol.1974.170120802
出版商: John Wiley&Sons, Inc.
数据来源: WILEY
摘要:
AbstractThe radiation‐induced polymerization of ethylene in cyclohexane was carried out in a reactor of 100 ml capacity under a range of temperature of 25–150°C, dose rate of 4.1 × 104–2.9 × 105rad/hr, pressure of 200 kg/cm2, and amount of cyclohexane of 20–90 ml. The polymerization was found to proceed at a steady state from the beginning. The polymerization rate is maximum at ca. 50 ml of cyclohexane. The dose rate exponent of the polymerization rate was 0.6 at every temperature from 25 to 150°C. The polymer molecular weight is in the range of 103–104, independent of dose rate, and decreases with increasing amount of cyclohexane. The molecular weight distribution is unimodal and narrow. Kinetic analysis of these results indicates that the polymerization proceeds via a simple scheme of homogeneous polymerization and the polymer molecular weight was determined by the chain transfer reaction which takes place mostly with cyclohexane. The unimodal and narrow molecular weight distribution is also consistent with the homogeneous polymeri
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