Polymerization of Acrylamide by Peroxodiphosphate/Different Activators Redox Systemin an Aqueous Medium

Autor:	Uma Rani Agrawal, Lal Bahadur, Kunj Behari, Rima Das
Rok vydání:	1994
Předmět:	Order of reaction Polymers and Plastics Sulfuric acid General Chemistry Degree of polymerization Sorbose chemistry.chemical_compound Monomer chemistry Polymerization Thiourea Acrylamide Materials Chemistry Ceramics and Composites Organic chemistry Nuclear chemistry
Zdroj:	Journal of Macromolecular Science, Part A. 31:383-394
ISSN:	1520-5738 1060-1325
DOI:	10.1080/10601329409351526
Popis:	The polymerization of acrylamide initiated by potassium peroxodi-phosphate in combination with different activators (viz., sorbose and thiourea) was studied in an aqueous medium at 40 0°C in an inert atmosphere. The rate of polymerization was found to be first power to the monomer and half power to the initiator concentration. Sorbose and thiourea have half and unit orders, respectively. The overall energy of activation was found to be 38 ± 2 and 47 ± 2 kJ/mol for peroxodi-phosphate/sorbose and peroxodiphosphate/thiourea redox systems, respectively. The effects of various additives, such as organic solvents, neutral salts, surfactants, and sulfuric acid, were studied. The viscometric-average molecular weight and the degree of polymerization were determined viscometrically.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::357616fda5e35b8bf3663975c02aa770 https://doi.org/10.1080/10601329409351526 Zobrazit plný text záznamu