Polymer Engineering Faculty Research
Title
Molecular mobility in ultrasonically treated butyl gum and devulcanized butyl rubber
Document Type
Article
Publication Date
Fall 2004
Abstract
In an effort to improve our understanding of the structural changes during ultrasonic treatment, proton NMR transverse relaxation was used to study butyl rubber gum before and after ultrasonic treatment, and ultrasonically devulcanized unfilled butyl rubber. The relaxation decay was successfully described using a two-component model. The short component is attributed to entangled and crosslinked networks including the high molecular weight fraction of the sol, and the long component arises mainly from low molecular weight fractions of the sol. All component molecular mobilities and the relative contributions of the components to the echo were investigated. The present results were compared with our previous NMR studies of other devulcanized rubbers.
Volume
45
First Page
8459
Last Page
8467
Recommended Citation
Isayev, Avraam, "Molecular mobility in ultrasonically treated butyl gum and devulcanized butyl rubber" (2004). Polymer Engineering Faculty Research. 48.
https://ideaexchange.uakron.edu/polymerengin_ideas/48