Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 58, Issue -, Pages 37-46Publisher
ELSEVIER
DOI: 10.1016/j.ijbiomac.2013.03.045
Keywords
Gum ghatti; Acrylamide; Swelling; Flocculation; Biodegradation
Funding
- National Institute of Technology Jalandhar, India
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Biodegradable flocculants of Gum ghatti (Gg) with acrylamide (AAm) were prepared through graft co-polymerization technique using potassium persulphate (KPS)-ascorbic acid (ABC) redox pair as initiator and N,N'-methylene-bis-acrylamide (MBA) as a crosslinker. Gg-cl-poly(AAm) was found to exhibit pH and temperature responsive swelling behavior. Maximum flocculation efficiency of Gg-cl-poly(AAm) was observed with 15 mg L-1 polymer dose in acidic medium at 50 degrees C. Biodegradation studies of Gg and Gg-cl-poly(AAm) were done using composting method. Gg was found to degrade within 20 days, whereas, Gg-cl-poly(AAm) was found to degrade 88.18% within 60 days. Different stages of bio-degradation were characterized through FT-IR and SEM techniques. (C) 2013 Elsevier B.V. All rights reserved.
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