NDLI: Interdiffusion of polymers with glassy bulk

Content Provider	Springer Nature Link
Author	Boiko, Yuri M.
Copyright Year	2011
Abstract	Mechanical properties developing at the contact zone of two samples of linear amorphous polymers with vitrified bulk have been employed to analyze the process of segmental diffusion of reptating chains across polymer–polymer interfaces. The diffusion coefficients (D) of this process have been estimated for polymers with different chain architecture and investigated with respect to healing temperature (T). It has been shown that logD ∼ 1/T at $$ T < T_{\text{g}}^{\text{bulk}} $$ ( $$ T_{\text{g}}^{\text{bulk}} $$ is the glass transition temperature of the polymer bulk), which implies that the process of segmental diffusion under healing conditions investigated is a thermally activated Arrhenius-like process describing as D = D 0 exp[−E a/(RT)], where D 0 and E a are the activation energy and the pre-exponential factor, respectively. It has been found that logD 0 ∼ E a, which points to the validity of the so-called kinetic compensation effect for the interdiffusion process at the contact zones of polymers with glassy bulk when an increase in E a is “compensated” by the corresponding increase in D 0.
Starting Page	1847
Ending Page	1854
Page Count	8
File Format	PDF
ISSN	0303402X
Journal	Colloid and Polymer Science
Volume Number	289
Issue Number	17
e-ISSN	14351536
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-09-25
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polymers Adhesion Diffusion Activation energy Food Science Soft and Granular Matter, Complex Fluids and Microfluidics Polymer Sciences Characterization and Evaluation of Materials Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Colloid and Surface Chemistry Materials Chemistry Physical and Theoretical Chemistry Polymers and Plastics

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