Glass Transition Temperature Study and Structural Characterization of Swift Heavy Ion Irradiated Polymers
PMMA and PVC thermoplastic polymers were irradiated with 50 MeV Li+3 ions to the fluences of 1010 to 1012 ions/cm2. XRD and DMA techniques were utilized to study the induced changes in structure and glass transition temperature of pristine polymer films. The XRD results show increase in the degree of crystallinity upon ion irradiation at low fluences (≤ 1011 ions/cm2) and decrease in crystallinity at high fluences (>1011 ions/cm2). Upon swift heavy ion radiation, the glass transition temperature of the polymers increases upto 1011 ions/cm2 fluence due to induced crosslinking and beyond this fluence, a decreasing behaviour is observed due to chain scissioning in polymeric structure.
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Document Type: Research Article
Affiliations: 1: Department of Physics, SKITM & G, Jaipur, India 2: SPSL, Department of Physics, University of Rajasthan, Jaipur, India
Publication date: November 1, 2016
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