γ Radiolysis of poly (butene-1 sulfone) and poly(hexene-1 sulfone)

Brown J.R. and O'Donnell J.H. (1972) γ Radiolysis of poly (butene-1 sulfone) and poly(hexene-1 sulfone). Macromolecules, 5 2: 109-114.

Author Brown J.R.
O'Donnell J.H.
Title γ Radiolysis of poly (butene-1 sulfone) and poly(hexene-1 sulfone)
Journal name Macromolecules   Check publisher's open access policy
ISSN 0024-9297
Publication date 1972-01-01
Sub-type Article (original research)
Open Access Status Not yet assessed
Volume 5
Issue 2
Start page 109
End page 114
Total pages 6
Subject 2505 Materials Chemistry
Abstract It has been shown that poly(butene-1 sulfone) and poly(hexene-1 sulfone), which are 1:1 alternating copolymers of the type +CH2CHR-SO2+n, undergo rapid degradation upon irradiation in the solid state in air and in vacuo. G(fracture) = 10.7 for poly(butene-1 sulfone) at 0° and 9.8 for poly(hexene-1 sulfone) at 30°, both in vacuo. The values of G(fracture) were higher for irradiation in air. The main volatile product at 0° was sulfur dioxide, in comparable yield to G(fracture), suggesting specificity of C-S fracture and stabilization of main-chain fracture by SO2 elimination. Increasing irradiation temperatures resulted in increasing depropagation to the two comonomers as a result of the thermodynamic instability of the polymer. Hydrogen was the other main volatile product, and there were very small amounts of saturated hydrocarbons. The broad initial molecular weight distributions were only slightly reduced toward the most probable distribution, indicating that some cross-linking occurred.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 16 Aug 2016, 11:57:54 EST by System User