Journal ArticleDOI
A comparison of the morphology of crazes formed in thin films and in bulk specimens of polystyrene
P. Beahan,M. Bevis,Derek Hull +2 more
TLDR
In this article, the microstructure of crazes formed in solvent-cast thin films has been studied by transmission electron microscopy, and the results have been compared with the results derived from the examination of replicas obtained from the fracture surfaces of bulk specimens.Abstract:
The microstructure of crazes formed in solvent-cast thin films have been studied by transmission electron microscopy. The results have been compared with the microstructure of crazes determined from the examination of replicas obtained from the fracture surfaces of bulk specimens. The structure of crazes formed in thin films and in the bulk have been shown to be similar with the exception that much finer fibril structures are observed in thin films at large deformations. A model of the microstructure of a craze is presented.read more
Citations
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Journal ArticleDOI
Craze microstructure from small-angle x-ray scattering (SAXS)
TL;DR: In this article, the authors measured the small-angle x-ray scattering from air crazes in polystyrene (PS) and polycarbonate (PC) as well as from methanol craze in PS using both pinhole-collimated and slitcollimated cameras.
Journal ArticleDOI
The Durability of Epoxies.
Roger J. Morgan,James E. O'neal +1 more
TL;DR: In this paper, the state of knowledge of the basic factors that control the durability of epoxies in service environments is reviewed, and the effect of fabrication and environmental factors and their complex interactions on the formation of permanent damage regions are discussed.
Journal ArticleDOI
The microscopic failure processes and their relation to the structure of amine-cured bisphenol-A-diglycidyl ether epoxies
Roger J. Morgan,James E. O'neal +1 more
TL;DR: In this article, it is suggested that these particles are intramolecularly crosslinked molecular domains which can interconnect to form larger network morphological entities, and the fracture topographies of the epoxies are interpreted in terms of a crazing process.
References
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Journal ArticleDOI
Electron microscopy of crazes in polystyrene and rubber modified polystyrene: use of iodine-sulphur eutectic as a craze reinforcing impregnant
R. P. Kambour,R.R. Russell +1 more
TL;DR: In this article, a rubber-modified polystyrene was used to act as a reinforcing agent during microtomy and the effect of sulphur-reinforced poly-(dimethyl phenylene oxide) crazes due to a physical aging process involving polymer flow was investigated.
Journal ArticleDOI
The morphology of crazes in polystyrene
P. Beahan,M. Bevis,Derek Hull +2 more
TL;DR: The microstructure of crazes in polystyrene has been shown in the later stages of craze deformation to consist of a well-defined fibrillar structure.
Journal ArticleDOI
Structure and phase state of polymers
TL;DR: In this paper, the formation of ordered structures in amorphous polymers has been found by investigating solutions of polymers with the electron microscope and the results of a number of investigations carried out by the electron microscopy and by direct structural techniques make it possible to obtain such an estimation.
Journal ArticleDOI
The fracture of polystyrene: some observations on strength and cracking phenomena
R.J. Bird,G. Rooney,J. Mann +2 more
TL;DR: In this paper, the authors used carbon replicas in the transmission electron microscope to study fracture surfaces of stressed polystyrene and revealed that at the onset of fracture the material has a sponge-like character and a great deal of fibrous structure.