|
NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.14 [2007] >
IJCT Vol.14(2) [March 2007] >
| Title: | Synthesis of PAN nanoparticles via nonconventional microemulsion technique using Co(II)/EDTA in situ complex |
| Authors: | Biswal, Trinath
Sahoo, Prafulla K |
| Keywords: | Microemulsion
CoCl₂/EDTA in situ complex
Nano particle
Kinetics
TEM |
| Issue Date: | Mar-2007 |
| Publisher: | CSIR |
| IPC Code: | C08F2/00, C08J3/00 |
| Abstract: | Synthesis of polyacrylonitrile nanoparticles was carried out under the catalytic effect of in situ developed Co(II)/EDTA complex with ammonium persulphate as initiator, in the absence of added emulsifier. The microemulsion polymerization was studied at varying concentrations of initiator, monomer, complex and solvent over a temperature range of 30-70ºC. The overall activation energy (Ea, 49.79 kJ/mol), energy of dissociation of initiator (Ed, 82.68 kJ/mol), number of micelles
(0.163 x 1018) and the viscosity average molecular weight of the polymer were computed. The distribution of particle sizes was determined by transmission electron microscopy (TEM). It was found that the oil-in-water polymerization was stabilized by the presence of the CoCl₂/EDTA in situ complex reducing the particle size into nano order. The average diameters of PAN nano particles, obtained by TEM, were in the range of 50-150 nm at maximum conversion. The experimental particle size was mainly dependent on the concentration of complex and temperature. |
| Page(s): | 119-125 |
| ISSN: | 0971–457X |
| Source: | IJCT Vol.14(2) [March 2007]
|
|
