Abstract
AbstractThe mechanism of two‐dimensional polymerization of octadecyl acrylate in lamellar crystal was investigated in two‐step postpolymerizations by temperature increase and stepwiseγ‐ray irradiation in lieu of the usual one‐step reaction. Two‐step postpolymerizations by these procedures are interpreted satisfactorily by the cone model, which assumes that the polymerization probability of the monomer molecules in a single layer is distributed conically around the initiation point. It was found that the propagating radicals were living, even in the saturated stage, and the effect of the polymer chains already formed on the propagating and terminating reactions was evident. Furthermore, molecular weight distributions of the resultant poly(octadecyl acrylate) measured by gel permeation chromatography (GPC) were broad. The values of Mw/Mn for the two‐step post polymerizations were 4.71–7.03, whereas those for one‐step reactions were 3.26–5.54.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Journal of Polymer Science: Polymer Chemistry Edition
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.