Arash Ranjbarzadeh-Dibazar - Department of Biomaterials, Faculty of Science, Iran Polymer and Petrochemical Institute, P.O. Box:۱۴۹۶۵/۱۱۵, Tehran, Iran
Jalal Barzin - Department of Biomaterials, Faculty of Science, Iran Polymer and Petrochemical Institute, P.O. Box:۱۴۹۶۵/۱۱۵, Tehran, Iran
Parvin Shokrollahi - Department of Biomaterials, Faculty of Science, Iran Polymer and Petrochemical Institute, P.O. Box:۱۴۹۶۵/۱۱۵, Tehran, Iran

polytetrafluoroethylene (PTFE) membranes were prepared by thermo-mechanical stretching. Steps for membrane preparation include, paste formation, extruding and thermo mechanical stretching. Membranes were formed at 300,400 and 500% stretching and crystal characterizations were carried out by DSC and XRD methods. Crystallinty at these methods had differences and was related to the detection methods of XRD and DSC for PTFE membranes

PTFE membranes, crystallinity, XRD, DSC