INFLUENCE OF THICKNESS OF HOMOPHASE AND HETEROPHASE POLYMER FILMS ON THEIR MECHANICAL PROPERTIES
Titel:
INFLUENCE OF THICKNESS OF HOMOPHASE AND HETEROPHASE POLYMER FILMS ON THEIR MECHANICAL PROPERTIES
Auteur:
Vlasov, S. V. Shcherbakova, E. A. Markov, A. V. Kuleznev, V. N.
Verschenen in:
International journal of polymeric materials
Paginering:
Jaargang 53 (2004) nr. 8 pagina's 685-696
Jaar:
2004-08
Inhoud:
Effect of thickness on mechanical properties (“scale factor”) of polymer films with different structures was studied. Polymer films with different structures include: isotropic homophase films prepared by melt extrusion (PC, PP, PET) or solution-cast (PC, polyimide), also foamed films and polyblend films (made of incompatible polymers such as PET, PP, HIPS). Classical manifestation of this scale factor was observed mainly for homophase extruded films (including foamed ones). This effect is masked by residual stresses in solution-cast films or by specific heterophase structure in polyblend films. Influence of orientational drawing on scale factor was also established for various types of polymer films.