Nirlipta Ranjan Mohanty

College of Engineering, Pune | coep · Department of Instrumentation and Control Engineering

Twenty polystyrene-g-gelatin samples were synthesised using Ce(IV) as the free radical initiator in order to make biodegradable polystyrene. Recovery of polystyrene from acid hydrolysis of the grafted sample and the appearance of new bands of gelatin at 3479 cm−1, 3235 cm−1, 1060 cm−1 and 1370 cm−1 in the IR spectrum of the grafted polystyrene samp...

The physical properties of Methyl Methacrylate grafted Muga silk fiber (9.05 to 25.5% graft) were studied using standard methods. Properties of textile interest such as thermal insulating capacity, tensile properties like breaking load, tenacity, tensile strength, youngϵs modulus, and electrical properties such as electrical resistance were found t...

Acrylonitrile was grafted onto coir in aqueous solution using tetravalent cerium as initiator. The physical properties of grafted fiber (9.07 to -31.6% graft) were studied using standard methods and compared with those of the ungrafted one. Some of the useful physical properties of the fiber, such as density, resilience, and electrical resistance,...

The use of tetravalent cerium to initiate graft copolymerization of methyl methacrylate on to silk fibres has been investigated. The extent of grafting was determined while varying Ce(IV) and monomer concentrations, temperature and nature of the fibre. The graft yield increased on increasing Ce(IV) concentration up to 0.015 M and monomer concentrat...

The physical properties of methyl methacrylate grafted tussah silk fiber (9.6 to 36.9% graft) were studied using standard methods. Properties of textile interest such a8 thermal conductivity and shrinkage; tensile properties such a8 breaking load, tenacity, tensile strength, and Young' s modulus; and electrical properties such as electrical resista...

The graft copolymerization of methyl methacrylate onto nonmulberry natural tussah silk fibers was investigated in aqueous solution using tetravalent cerium as initiator. The rate of grafting was determined by varying the monomer concentration, the cerium (IV) concentration, the temperature, and the nature of the silk. With increasing monomer concen...

The kinetics of acrylonitrile polymerization initiated by butane-l,4-diol-Ce(IV) redox system have been studied in aqueous sulfuric acid in the range 30 to 40°C under nitrogen. There is no experimental evidence for the formation of a complex between diol and oxidant; the kinetics are consistent with a linear mode of termination. The effect of certa...

The mechanism of polymerization of acrylonitrile initiated by the mannitol-Ce(IV) redox system has been studied in aqueous sulfuric acid medium in the temperature range 30 to 40° C. Experimental findings show that when the ceric ion concentration is held low (0.00005–0.02 M), the mechanism of polymerization is consistent with the kinetic scheme inv...

The polymerization of acrylonitrile (M) initiated by the sorbitol (R)-Ce(IV) redox system has been studied in sulphuric acid in the range 30–40° under nitrogen. At moderately high concentrations of Ce(IV) (0.00015-0.02 M), the rate of polymerization (Rp) is proportional to and and the rate of Ce(IV) disappearance is proportional to [R] and [Ce(IV)]...

The polymerization of acrylonitrile (M) initiated by the Ce(IV)-propane-1,2-diol (R) redox system has been studied in aqueous sulphuric acid under nitrogen in the temperature range 30 to 40°. The rate of polymerization is proportional to [M]2, [R] and [Ce(IV)]−1 and the rate of ceric ion disappearance is proportional to [R], [Ce(IV)]. The effects o...