Synthesis, characterization, and swelling behavior evaluation of hydrogels based on Gum ghatti and acrylamide for selective absorption of saline from different petroleum fraction-saline emulsions

Balbir Singh Kaith, Rajeev Jindal, Hemant Mittal, Kiran Kumar

    Research output: Contribution to journalArticlepeer-review

    63 Scopus citations

    Abstract

    In this research article, the synthesis of Gum ghatti and acrylamide based superabsorbents under pressure with N,N′-methylene bisacrylamide as a crosslinker and an ascorbic acid-potassium persulfate redox pair as an initiator is reported. To study the impact of the different reaction variables on the water absorbance of the candidate polymer, different reaction parameters, including the reaction time, amount of solvent, pH of the medium, initiator ratio, pressure, and monomer and crosslinker concentrations, were optimized. The candidate polymer was characterized with different techniques, including Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, differential thermal analysis, differential thermogravimetry, and X-ray diffraction. The crosslinked product was found to be thermally more stable than the initial backbone. The swelling capacity of the synthesized polymer was investigated in deionized water as a function of time, temperature, and pH of the swelling medium. Moreover, the effects of the ionic strengths of different cations on the swelling capacity of the candidate polymer were studied with different salt solutions. The tendency of absorbency for these hydrogels in salt solutions was found to be in the following order: Na + > Ba 2+ > Fe 3+ > Sn 4+ for NaCl, BaCl 2, FeCl 3, and SnCl 4 salt solutions. Further, the candidate polymer was used for the selective absorption of saline water from different petroleum fraction-saline emulsions. The results showed that the saline absorption capacities of the hydrogels were 667, 610, 646, and 680% in kerosene-saline, diesel-saline, petrol-saline, and petroleum ether-saline emulsions, respectively.

    Original languageBritish English
    Pages (from-to)2037-2047
    Number of pages11
    JournalJournal of Applied Polymer Science
    Volume124
    Issue number3
    DOIs
    StatePublished - 5 May 2012

    Keywords

    • crosslinking
    • hydrogels
    • polymer synthesis and characterization
    • swelling
    • thermogravimetric analysis (TGA)

    Fingerprint

    Dive into the research topics of 'Synthesis, characterization, and swelling behavior evaluation of hydrogels based on Gum ghatti and acrylamide for selective absorption of saline from different petroleum fraction-saline emulsions'. Together they form a unique fingerprint.

    Cite this