Structure of crazes formed on stretching of polyethylene terephthalate in a liquid medium

Yefimov, A.V.; Shcherba, V.Yu.; Ozerin, А. N.; Ребров, А. В.; Bakeyev, N.F.

doi:10.1016/0032-3950(89)90279-7

Cited by 3 publications

(1 citation statement)

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“…The native structure of crazes cannot be investigated with an electron microscope, because this method implies evacuation of an object under examination. Therefore, the structure of native crazes was so far studied using small‐angle X‐ray scattering (SAXS) (Yefimov et al ., ) and liquid permeability under pressure gradients (Yarysheva et al ., ). However, the interpretation of experimental data obtained by these methods requires the use of model concepts, thus leading to ambiguous results.…”

Section: Introductionmentioning

confidence: 99%

Atomic force microscopic study of the structure of high‐density polyethylene deformed in liquid medium by crazing mechanism

Bagrov

Yarysheva

Rukhlya

et al. 2013

Journal of Microscopy

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SummaryA procedure has been developed for the direct atomic force microscopic (AFM) examination of the native structure of highdensity polyethylene (HDPE) deformed in an adsorption-active liquid medium (AALM) by the crazing mechanism. The AFM investigation has been carried out in the presence of a liquid medium under conditions preventing deformed films from shrinkage. Deformation of HDPE in AALM has been shown to proceed through the delocalized crazing mechanism and result in the development of a fibrillar-porous structure. The structural parameters of the crazed polymer have been determined. The obtained AFM images demonstrate a nanosized nonuniformity of the deformation and enable one to observe the structural rearrangements that take place in the deformed polymer after removal of the liquid medium and stress relaxation. A structural similarity has been revealed between HDPE deformed in the AALM and hard elastic polymers.

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Section: Introductionmentioning

confidence: 99%