ISSN:
1436-2449
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Summary Based on macroscopic and microscopic observations, a model is proposed concerning molecular conformation and chemical structure changes occurring during mechanical deformation of amorphous polymers below their Tg. It is assumed that a bulk polymer, with high molecular mass, consists of interpenetrating, coiled chain molecules. The intrinsic flexibility and the thickness of chain molecules depend on their chemical nature. Stresses are transferred from one chain to others by physical entanglements. Shear yielding, as a solid state deformation mode, is considered as the result of stretching of the coiled chain segments between the entanglements. Crazing, as a cavitation process, is considered to be the consequence of chain scission after some degree of local shear yielding.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00255010
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