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Buckling in elastomer/plastic/elastomer 3‐layer films
Author(s) -
Hu Y.,
Hiltner A.,
Baer E.
Publication year - 2004
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.20060
Subject(s) - materials science , composite material , elastomer , buckling , modulus , polyolefin , elastic modulus , layer (electronics)
Buckling during recovery of stretched elastomer/plastic/elastomer 3‐layer films was studied using a block copolymer elastomer and polyolefin plastics. An elastic model was developed to describe the critical wavelength, critical compressive strain, and critical compressive stress for buckling without delamination. The predicted linear dependence of critical wavelength on the plastic layer thickness was confirmed, and the modulus ratio between the plastic and the elastomeric layers was extracted. Determination of the critical compressive strain provided an independent calculation of the modulus ratio. Similar modulus ratios were obtained by the two methods. The critical compressive stress in the plastic layer led to reasonable values for the compressive modulus of the stretched plastic layer and the bulk modulus of the elastomeric layers. To test the model further, the modulus ratio was altered by changing the stretch ratio and by varying the plastic layer material. No buckling occurred if the modulus ratio was too small. Polym. Compos. 25:653–661, 2004. © 2004 Society of Plastics Engineers.