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Enhanced Crystallinity of PTFE by Ion Irradiation in a Dense Plasma Focus
Author(s) -
Sadiq Mehboob,
Ahmad Sarfraz,
Shafiq Muhammad,
Zakaullah Muhammad
Publication year - 2007
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.200600064
Subject(s) - crystallinity , irradiation , materials science , raman spectroscopy , ion , ion beam , polymer , analytical chemistry (journal) , composite material , chemistry , optics , physics , organic chemistry , chromatography , nuclear physics
Nitrogen‐ion beam pulses emitted from a low‐energy (1.45 kJ) Mather‐type plasma focus device are used for the surface modification of PTFE polymer specimens. The specimens, placed at a fixed position, are implanted using different number of pulses. Raman spectroscopy and XRD are employed to probe the structural changes incurred during the ion implantation. Both techniques indicate that the crystalline order in the specimens increases with increasing the irradiation dose. The crystallinity degree of the irradiated specimens, as measured from the XRD data, is found to enhance monotonically from 40% to about 55%. Possible crystallinity enhancement mechanism of irradiated PTFE specimens via chain scission is discussed.