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Structure characterization of cold drawn high density polyethylene thin film
Author(s) -
Fouda I. M.,
ElTonsy M. M.,
Seisa E. A.,
Felfel R. M.
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.34123
Subject(s) - high density polyethylene , birefringence , materials science , composite material , polyethylene , thin film , scattering , work (physics) , chain (unit) , optics , thermodynamics , physics , nanotechnology , astronomy
This work throws light to study the changes of optical birefringence for cold drawn high density polyethylene (HDPE) thin film at different stresses. A stress–strain device connected to a scattering optical system was used to investigate the dynamical behavior of opto‐mechanical properties at room temperature (27°C ± 1°C). Some structural parameters, optical and mechanical orientation factors, f (θ), f 2 (θ), f 4 (θ), f 6 (θ), F av , P 2 (θ), P 4 (θ), f c , and f m , were calculated. Also, the distribution segments at an angle (θ), the number of random links per chain ( N 1 ), the number of chains per unit volume ( N c ), and the average work per chain W ′ were calculated. The average value of the maximum birefringence was evaluated. The obtained studies demonstrate changes to the molecular orientation functions and evaluated micro structural parameters as a result of the applied cold‐drawing process on (HDPE) thin film. Relationships between the calculated parameters and draw ratios were presented for illustration. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011