Abstract
Abstract Stree-induced crystallinity in elastomers produces a strengthening structure, and tearing the rubber along the axis of extension leaves this structure outlined in the rupture surface. By maintaining the initial elongation, and taking replicas of this torn surface, the morphology of stress crystallinity has been examined in the electron microscope. The crystallites were found to be closely spaced fibers, rounded in section, and oriented in the direction of elongation. The fibers were usually between 100 and 1000 A in diameter, and individual crystallites could be traced for distances of several microns before disappearing beneath the exposed surface. Noncrystallizing polymers showed no structure in the rupture surface. The addition of fine particle fillers had little effect on the structures observed in crystallizing polymers. In amorphous polymers traces of structure were observed, apparently consisting of groups of carbon black particles linked by rubber molecules.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
