Double melting in polytetrafluoroethylene γ-irradiated above its melting point

• Published in: Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Vol. 271; pp. 92 - 95
• Main Authors: Serov, S.A., Khatipov, S.A., Sadovskaya, N.V., Tereshenkov, A.V., Chukov, N.A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.01.2012
• Subjects: Crystal structure; Crystallization; Differential scanning calorimetry; Electronic microscopy; Irradiation; Melting; Melting points; Melts; Morphology; Polytetrafluoroethylene; Polytetrafluoroethylenes; Splitting; Thermal analysis; Differential scanning calorimetry; Polytetrafluoroethylene; Melting; Morphology; Crystallization; Thermal analysis; Electronic microscopy
• ISSN: 0168-583X; 1872-9584
• DOI: 10.1016/j.nimb.2011.11.003

► PTFE irradiation leads to formation of double melting peaks in DSC curves. ► This is connected to dual crystalline morphology typical for PTFE. ► Two crystalline types exist in the PTFE irradiated in the melt. PTFE irradiation above its melting point leads to formation of double melting and crystallization peaks in DSC curves. Splitting of melting peaks is connected to dual crystalline morphology typical for PTFE irradiated in the melt. According to electron microscopy, two crystalline types with different size and packing density exist in the irradiated PTFE.