Radiation-induced polymerization of isobutylene oxide

✍ Scribed by Bauer, R. S. ;Spooncer, W. W.

• Publisher: Wiley (John Wiley & Sons)
• Year: 1970
• Tongue: English
• Weight: 290 KB
• Volume: 8
• Category: Article
• ISSN: 0449-296X
• DOI: 10.1002/pol.1970.150081021

✦ Synopsis

Abstract

In the absence of oxygen, liquid isobutylene oxide is polymerized by high energy radiation. The resultant polyethers may possess the same gross structures as those prepared by Lewis acid catalysis:
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The reaction is characterized by (1) a small, apparent activation energy (2.7 kcal/mole), (2) a polymerization rate proportional to the first power of the dose rate, (3) inhibition by Lewis bases, and (4) moderate inhibition by free‐radical scavengers. The molecular weights of the polymers increase with decreasing temperatures of polymerizations. These results will be discussed in terms of a cationic propagation mechanism.