Peroxydisulphate initiated graft copolymerization ofo-toluidine onto synthetic fibres - A kinetic approach

Self Cite

Chemical polymerization of o-toluidine (OT) in the presence of nylon 6 and wool fibers initiated by peroxomonosulphate (PMS) in an aqueous acidic medium was carried out under nitrogen atmosphere. During the polymerization process, graft copolymers were formed along with homopolymers of OT. A procedure is given for the separation of poly(o-toluidine) (POT) grafted fiber from the homopolymer. Rate of homopolymerization (R h ), rate of grafting (R g ), percentage grafting, and percentage grafting efficiency were determined. Rate constants were evaluated from the experimental results. The chemical grafting of POT onto nylon 6 and wool fibers was confirmed through Fourier transform infrared (FTIR) spectroscopy and electrical conductivity measurements.

Section: Resultsmentioning

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Peroxomonosulphate initiated graft copolymerization of o‐toluidine onto nylon 6 and wool fibers—A kinetic approach

Anbarasan¹,

Johnsamuel

Gopalan

2002

Self Cite

“…Recently, our active research team communicated some kinetic results on the peroxosalts‐initiated graft copolymerization of aniline and o ‐toluidine onto PET,19, 20 Nylon 6,21 wool,22, 23 and Nylon 6624 fibers. Peroxosalts‐initiated graft copolymerization of aniline and o ‐toluidine onto polypropylene (PP)25 and Rayon26 fiber was reported by Anbarasan and coworkers.…”

Section: Introductionmentioning

confidence: 98%

Peroxosalts initiated graft copolymerization of aniline onto rayon fiber—A kinetic approach

Anbarasan¹,

Johnsamuel

Sudha

et al. 2001

Self Cite

Oxidative chemical polymerization of aniline was carried out using peroxydisulphate and peroxomonosulphate as a lone initiator in an aqueous acidic medium in the presence of Rayon fiber. The Rayon fiber was tested for the chemical grafting of polyaniline onto it. The content of polyaniline (wt %) in the backbone was found to vary while varying the [M], [I], and (amount of Rayon fiber) during the polymerization of aniline. Various graft parameters like rate of grafting, % grafting, and % efficiency were calculated. Rate of homopolymerization was also followed for both cases. The chemical grafting was confirmed using FTIR spectroscopy, cyclic voltammetry, weight loss study, and conductivity measurements. Probable mechanism has been proposed to explain the experimental results obtained.

“…The use of peroxosalts [potassium peroxodisulfate (PDS), potassium peroxomonosulfate (PMS), etc.] as initiator for free‐radical initiation of vinyl polymerization and graft copolymerization has been exhaustively studied 12–18…”

Section: Introductionmentioning

confidence: 99%

Chemical oxidative grafting of conducting poly(N‐methyl aniline) onto poly(ethylene terepthalate)

Santhosh

Mathanmohan

Sankarasubramanian

et al. 2004

Self Cite

Detailed studies on the peroxidisulfate (PDS) initiated graft copolymerization of N-methyl aniline (NMA) with poly(ethylene terepthalate) (PET) were carried out in p-tolene sulfonic acid medium under nitrogen atmosphere. Experiments were designed to follow the rate of formation R h of the poly(N-methyl aniline (PNMA), simultaneously with the rate of grafting of PNMA onto PET. Effects of concentration of NMA, PDS, PET, time, and temperature on R h and graft parameters were followed. Kinetic equations were deduced to correlate the changes in the rate with experimental conditions. Graft copolymers were isolated and grafting of PNMA onto PET was confirmed through FTIR, thermogravimetric analysis, and conductivity measurements. Tensile measurements showed that grafting of PNMA did not alter the tensile properties of PET. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 95: 596 -605, 2005