Craze-initiation kinetics in polystyrene

2004 ◽  
Vol 42 (11) ◽  
pp. 2066-2073 ◽  
Author(s):  
T. A. Tervoort ◽  
L. E. Govaert
Keyword(s):  
Craze Initiation

Criteria of Craze Initiation in Glassy Polymers

1971 ◽  
Vol 42 (11) ◽  
pp. 4188-4196 ◽  
Author(s):  
Tsuey T. Wang ◽  
M. Matsuo ◽  
T. K. Kwei
Keyword(s):  
Glassy Polymers ◽  
Craze Initiation

The Effects of Physical Ageing and of Prior Immersion on the Esc Behaviour of Polycarbonate in Ethanol

1993 ◽  
Vol 305 ◽  
Author(s):  
J. C. Arnold ◽  
A. R. Eccott
Keyword(s):  
Strain Rate ◽  
Immersion Time ◽  
Constant Strain Rate ◽  
Tensile Tests ◽  
Strain Rates ◽  
Physical Ageing ◽  
Diffusion Effects ◽  
Craze Initiation ◽  
Comparison Of Tests

AbstractThe effects of physical ageing and prior immersion time on the ESC behaviour of polycarbonate in ethanol were studied. Constant strain rate tensile tests were performed at a range of strain rates for samples with ageing times varying from 100 hours to 3000 hours and for prior immersion times of between 1 hour and 500 hours. Comparison of tests performed in ethanol and in air gave a good indication of the point of craze initiation. The results showed that there was a reduction in strain to crazing as the strain rate decreased, apart from with the lowest strain rate used. A longer prior immersion time also promoted craze formation. Both of these results are attributable to diffusion effects. Physical ageing had little effect on the ESC behaviour, due to the large amounts of deformation encountered in this system.

scholarly journals Macroscopic criterion for craze initiation in polystyrene

2017 ◽  
Vol 4 (5) ◽  
pp. 17-00347-17-00347 ◽  
Author(s):  
Makoto KAWAGOE ◽  
Hisashi FUJITA
Keyword(s):  
Craze Initiation

Quantification of Environmental Stress Cracking in Polymer Blends through Eyring Modeling

2004 ◽  
Vol 856 ◽  
Author(s):  
Peyton L. Hopson ◽  
Robert B. Moore
Keyword(s):  
Environmental Stress ◽  
Test Sample ◽  
Stress Cracking ◽  
Rule Of Mixtures ◽  
Miscible Blend ◽  
Environmental Stress Cracking ◽  
Fluid Environment ◽  
Immiscible Blend ◽  
Craze Initiation

ABSTRACTThe effect of blending polycarbonate (PC) with an amorphous copolyester (PCTG) and a crystallizable polyester (PBT) on the environmental stress cracking (ESC) resistance was studied. The determination of the ESC resistance for the blend was accomplished through tensile testing in a fluid environment utilizing an Eyring-type activated process to describe ESC. It was found that the miscible blend, PC/PCTG, displayed a rule of mixtures for ESC resistance to all fluids tested except ether resistance. The immiscible blend, PC/PBT, displayed a significant negative deviation from the rule of mixtures for ESC resistance, except for ether resistance, which has been attributed to the development of stress sites for craze initiation at the interface between the blend components on the surface of the test sample. The differences in ether resistance compared to the trends found for the fluid ESC resistance in this study were attributed to possible changes in crystallization for the samples tested in ether. The data suggests that strongly swelling fluids, e.g. diethyl ether in the presence of PC, may cause densification from polymer crystallization resulting in voids that facilitate in the initiation and growth of crazes.

A micro-indentation method for probing the craze-initiation stress in glassy polymers

Polymer ◽  
2003 ◽  
Vol 44 (8) ◽  
pp. 2481-2491 ◽  
Author(s):  
H.G.H van Melick ◽  
O.F.J.T Bressers ◽  
J.M.J den Toonder ◽  
L.E Govaert ◽  
H.E.H Meijer
Keyword(s):  
Glassy Polymers ◽  
Indentation Method ◽  
Craze Initiation ◽  
Micro Indentation ◽  
Initiation Stress

scholarly journals Craze initiation in glassy polymers: Quantifying the influence of molecular orientation

Polymer ◽  
2011 ◽  
Vol 52 (18) ◽  
pp. 4045-4053 ◽  
Author(s):  
Davide S.A. De Focatiis ◽  
C. Paul Buckley
Keyword(s):  
Molecular Orientation ◽  
Glassy Polymers ◽  
Craze Initiation

Influence of liquid media on the craze initiation in amorphous polylactide

Polymer ◽  
2018 ◽  
Vol 142 ◽  
pp. 43-47 ◽  
Author(s):  
E.S. Trofimchuk ◽  
N.I. Nikonorova ◽  
M.A. Moskvina ◽  
A.V. Efimov ◽  
M.A. Khavpachev ◽  
...  
Keyword(s):  
Liquid Media ◽  
Craze Initiation
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