4.8 Article

Nanoparticle induced piezoelectric, super toughened, radiation resistant, multi-functional nanohybrids

Journal

NANOSCALE
Volume 4, Issue 1, Pages 167-175

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c1nr11009h

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Funding

  1. Inter University Accelerator Centre (IUAC), New Delhi [IUAC/XIII.7/UFUP-3932/5603]
  2. CSIR, India

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We have developed multifunctional nanohybrids of poly(vinylidene fluoride-co-chlorotrifluoroethylene) (CTFE) with a small percentage of surface modified inorganic layered silicate showing dramatic improvement in toughness, radiation resistant and piezoelectric properties vis-a-vis pristine polymer. Massive intercalation (d(001) 1.8 -> 3.9 nm) of polymer inside the nanoclay galleries and unique crystallization behavior of the fluoropolymer on the surface of individual silicate layer has been reported. Toughness in the nanohybrid increases more than three orders of magnitude as compared to pure CTFE. High energy radiation (80 MeV Si+7) causes chain session, amorphization and creates olefinic bonds in the pure polymer while the nanohybrids are radiation resistant at a similar dose. Nanoclay induces the metastable piezoelectric beta-phase in CTFE, suitable for sensor and actuator application. Molecular level changes after irradiation and controlled morphology for smart membrane have been confirmed by using spectroscopy, sol-gel technique, surface morphology studies and in situ residual gas analysis.

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