NASI Platinum Jubilee Chair Distinguished Professor
1974, PhD, University of Massachusetts, Amherst, Polymer Science & Engineering
1971, MS, University of Massachusetts, Amherst, Polymer Science & Engineering
1969, MS, Tufts University, Medford, Chemical Engineering
1968, BTech, India Institute of Technology, Kanpur, Chemical Engineering
Structure property correlations in polymer systems:
The systems studied include polymer blends and alloys,semi-crystalline polymers, liquid crystalline polymers, self-reinforcing composites (blends of LCP and conventional polymers), and thermoplastic composites. The recent work on polymer blends and alloys using reactive processing offer opportunities for designing polymeric materials for engineering applications with attractive performance properties.
Oriented films: Processing, properties and morphology
Stretch induced phase transformations in PVDF are studied at various processing conditions. Uniaxial stretching is carried out on cast and blown films to obtain the B-phase in PVDF, which possesses the highest piezoelectric constant amongst the polymers. The films are characterized by DSC, WAXD, SALS, FTIR and birefringence. The aim is to establish the best processing conditions for the formation of cast and blown PVDF films and to obtain electrical grade PVDF films.
Polymer-layered silicate nanocomposites:
The current work is focused on PET-clay nanocomposites using the melt-intercalation process. The special features of intercalation and exfoliation are being studied using characterization techniques like WAXD, FTIR, TEM and DSC. The aim is to develop materials for engineering and other applications.
Carbon nanotubes filled Polymer Composites
This study focused on preparation and properties of Polyamide 6 / PET reinforced with carbon nanotubes. The melt mixing will be utilized to obtain the composites. Fundamental challenges of CNT dispersion in polymer matrix are being focused. The composites are characterized for mechanical and electrical properties utilizing electrical conductivity measurements, WAXD, SAXS, FTIR, DSC, tensile testing in order to get structure property relationship. The aim is to develop unique materials possessing enhanced mechanical and or electrical properties for structural as well as electrical applications.