Accession Number:
ADA237333
Title:
The Molecular View of Plastic Deformation and Precursor Processes of Crazing in Glassy Polypropylene and Polycarbonate
Descriptive Note:
Interim technical rept. no. 33, 1990-1991,
Corporate Author:
MASSACHUSETTS INST OF TECH CAMBRIDGE
Personal Author(s):
Report Date:
1991-05-31
Pagination or Media Count:
6.0
Abstract:
The kinematics and energetics of the anelastic processes of phenylene ring rotation and carbonate group rearrangements in polycarbonate, and the nature of coherent plastic relaxations under imposed conditions of pure shear to large plastic strains in polypropylene have been computationally simulated on computer generated molecular structure models of these polymers in glassy form. In addition, simulations have also been performed on the inelastic dilatational response of polypropylene to probe precursor processes to crazing. Results on these simulations will be presented.
Descriptors:
- *PLASTIC DEFORMATION
- SHEAR PROPERTIES
- PROBES
- POLYMERS
- PRECURSORS
- POLYMERIZATION
- DEFORMATION
- ELASTIC PROPERTIES
- COHERENCE
- STRAIN(MECHANICS)
- GLASS
- POLYPROPYLENE
- PLASTIC PROPERTIES
- RELAXATION
- KINETICS
- RINGS
- ENERGETIC PROPERTIES
- ROTATION
- PHENYL RADICALS
- PLASTICS
- POLYCARBONATES
- CARBONATES
- CRAZING
- KINEMATICS
Subject Categories:
- Polymer Chemistry