Synthesis of graft copolymer (CmgOH-g-NVP) and study of physicochemical properties: Characterization and application

Autor:	Mithilesh Yadav, Kunj Behari, Madan Mohan Mishra, Dinesh Kumar Mishra
Rok vydání:	2011
Předmět:	Flocculation Guar gum Polymers and Plastics Potassium Organic Chemistry Swelling capacity chemistry.chemical_element Redox chemistry.chemical_compound chemistry Polymer chemistry Materials Chemistry Copolymer Fourier transform infrared spectroscopy Glycolic acid Nuclear chemistry
Zdroj:	Carbohydrate Polymers. 83:1749-1756
ISSN:	0144-8617
DOI:	10.1016/j.carbpol.2010.10.039
Popis:	The synthesis of graft copolymer (partially carboxymethylated guar gum-g-N-vinyl-2-pyrrolidone) is carried out in nitrogen atmosphere using potassium peroxymonosulphate and glycolic acid as redox system. The effect of reaction variables including the concentration of N-vinyl-2-pyrrolidone (8 × 10 −2 to 24 × 10 −2 ) mol dm −3 , potassium peroxymonosulphate (6 × 10 −3 to 22 × 10 −3 ) mol dm −3 , glycolic acid (0.6 × 10 −3 to 4.0 × 10 −3 ) mol dm −3 , sulphuric acid (1 × 10 −3 to 3 × 10 −3 ) mol dm −3 ), partially carboxymethylated guar gum (0.6–1.4) g dm −3 as well as time duration (60–180) min and temperature (30–50) °C has been studied. The water swelling capacity of graft copolymer is investigated. Flocculation property for both coking and non-coking coals is studied for the treatment of coal mine waste water. The graft copolymer has been characterized by Fourier transform infrared spectroscopy and thermogravimetic analysis.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2820cb2757f4399a201df3f476929961 https://doi.org/10.1016/j.carbpol.2010.10.039 Zobrazit plný text záznamu Full Text from ScienceDirect