1. Strain-induced Crystallization Shigeyuki Toki 、Igors Sics
in Natural Rubber
Shigeyuki Toki 、Igors Sics
and Benjamin S. Hsiao
Chemistry Department
State University of New York at Stony Brook

2. Rubber Research by Synchrotron X-Rays
Strain-induced crystallization and molecular orientation in natural and synthetic rubbers (NR, IR, BR, IIR)
Effect of network density and filler
Stress-strain relation and strain-induced crystallization and molecular orientation

3. Instrumentation and sample
Synchrotron X-rays (NSLS at BNL)
Modified Instron stretching machine
Mar-CCD
Original length 25 mm, constant stretching rate (10 mm/min).

4. Stress-strain relation and 2D and 3D WAXD patterns during extension and retraction in vulcanized NR at 25oC