The Influence of the Degree of Crystallinity on the Elasticity Modulus of Polymers

Andrey A. Askadskii; Marina Popova; Tatyana Matseevich; Egor Afanasyev

doi:10.4028/www.scientific.net/AMR.864-867.640

Paper Titles

Monitoring of Calcium Sulphate Phase Transformations Using High-Temperature X-Ray Diffraction
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Optical Property Studies of CdO Nanoparticles Synthesized by Solid-State Reaction
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Сomposition on the Basis of Fluorineanhydrite and Expanded Polystyrene for the Thermal Protection
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A Novel Catalytic Activity of Ce-Zr-Mn-OX Mixed Oxides for Low Temperature Selective Catalytic Reduction of NO with NH₃
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The Influence of the Degree of Crystallinity on the Elasticity Modulus of Polymers
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Microstructure and Mechanical Property of 22MnB5 High-Strength Steel
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Synthesis of Calcium Peroxide Microparticles in Aqueous at Room Temperature and its Application in Heavy Metal Ions Removal from Waste Liquid of COD Determining
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Preparation and Permeation Properties of NaA Zeolite Membrane by Vapor Phase Transformation Method
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Adsorption Properties of Reactive Brilliant Red X-3B, Reactive Light Yellow K-6G and Reactive Brilliant Blue X-BR on Ethylenediamine-Modified Magnetic Chitosan Microspheres
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The Influence of the Degree of Crystallinity on the Elasticity Modulus of Polymers

Abstract:

The influence of the degree of crystallinity of polymers on their elasticity modulus has been analyzed. Consideration was made of the situation when the amorphous parts of the polymers were in the rubbery state. A semi-crystalline polymer was considered in the form of a polymeric network in which the crystallites played the role of physical cross-links. Generalized equation of the rubber elasticity was applied to the analysis; this equation contained the Van-der-Waals volume of the cross-links and also the volume of a repeat unit of linear fragments. It was found that reduction of the crystallites size down to nanosize essentially increased the elasticity modulus at their fixed concentration.