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Surface Chemical Studies on Silicon Carbide Suspensions in the Presence of Poly (Ethylene Glycol) and Chitosan

Received: 5 November 2016     Accepted: 30 December 2016     Published: 23 January 2017
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Abstract

The changes in the surface chemical properties of SiC suspensions consequent to the addition of polyethylene glycol (PEG) and chitosan, both individually and in the presence of each other were studied. The adsorption densities of PEG and chitosan for SiCwere found to be higher at pH 2-3 and 7-7.5 respectively. The adsorption behaviour in the combined presence of PEG and chitosan was akin to those observed for the individual systems. The isoelectric point (i.e.p.) of SiC was found to be located at pH 3. The addition of chitosan shifted the i.e.p. towards more alkaline pH values, in proportion with the concentration of chitosan added, with a concomitant change in the zeta potentials to less electronegative or more electropositive values. On the contrary, only a marginal change in the electrokineticbehaviour of SiC suspension was found after PEG addition. The favourable pH regimes were established to be 2-6 and 9-11, for the enhanced stability of SiC suspension with the optimum dosage of chitosan. The electrokinetic and dispersion characteristics of the SiC-chitosan system were only slightly altered by the addition of PEG. FTIR spectral investigations provided evidence in support of the proposed hydrogen bonding forces of interaction between SiC and PEG or chitosan.

Published in Colloid and Surface Science (Volume 2, Issue 1)
DOI 10.11648/j.css.20170201.12
Page(s) 6-20
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Silicon Carbide, Chitosan, Poly (Ethylene Glycol), Adsorption, Electrokinetics, Dispersion

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Cite This Article
  • APA Style

    Saravanan Loganathan, Subramanian Sankaran. (2017). Surface Chemical Studies on Silicon Carbide Suspensions in the Presence of Poly (Ethylene Glycol) and Chitosan. Colloid and Surface Science, 2(1), 6-20. https://doi.org/10.11648/j.css.20170201.12

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    ACS Style

    Saravanan Loganathan; Subramanian Sankaran. Surface Chemical Studies on Silicon Carbide Suspensions in the Presence of Poly (Ethylene Glycol) and Chitosan. Colloid Surf. Sci. 2017, 2(1), 6-20. doi: 10.11648/j.css.20170201.12

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    AMA Style

    Saravanan Loganathan, Subramanian Sankaran. Surface Chemical Studies on Silicon Carbide Suspensions in the Presence of Poly (Ethylene Glycol) and Chitosan. Colloid Surf Sci. 2017;2(1):6-20. doi: 10.11648/j.css.20170201.12

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  • @article{10.11648/j.css.20170201.12,
      author = {Saravanan Loganathan and Subramanian Sankaran},
      title = {Surface Chemical Studies on Silicon Carbide Suspensions in the Presence of Poly (Ethylene Glycol) and Chitosan},
      journal = {Colloid and Surface Science},
      volume = {2},
      number = {1},
      pages = {6-20},
      doi = {10.11648/j.css.20170201.12},
      url = {https://doi.org/10.11648/j.css.20170201.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.css.20170201.12},
      abstract = {The changes in the surface chemical properties of SiC suspensions consequent to the addition of polyethylene glycol (PEG) and chitosan, both individually and in the presence of each other were studied. The adsorption densities of PEG and chitosan for SiCwere found to be higher at pH 2-3 and 7-7.5 respectively. The adsorption behaviour in the combined presence of PEG and chitosan was akin to those observed for the individual systems. The isoelectric point (i.e.p.) of SiC was found to be located at pH 3. The addition of chitosan shifted the i.e.p. towards more alkaline pH values, in proportion with the concentration of chitosan added, with a concomitant change in the zeta potentials to less electronegative or more electropositive values. On the contrary, only a marginal change in the electrokineticbehaviour of SiC suspension was found after PEG addition. The favourable pH regimes were established to be 2-6 and 9-11, for the enhanced stability of SiC suspension with the optimum dosage of chitosan. The electrokinetic and dispersion characteristics of the SiC-chitosan system were only slightly altered by the addition of PEG. FTIR spectral investigations provided evidence in support of the proposed hydrogen bonding forces of interaction between SiC and PEG or chitosan.},
     year = {2017}
    }
    

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  • TY  - JOUR
    T1  - Surface Chemical Studies on Silicon Carbide Suspensions in the Presence of Poly (Ethylene Glycol) and Chitosan
    AU  - Saravanan Loganathan
    AU  - Subramanian Sankaran
    Y1  - 2017/01/23
    PY  - 2017
    N1  - https://doi.org/10.11648/j.css.20170201.12
    DO  - 10.11648/j.css.20170201.12
    T2  - Colloid and Surface Science
    JF  - Colloid and Surface Science
    JO  - Colloid and Surface Science
    SP  - 6
    EP  - 20
    PB  - Science Publishing Group
    SN  - 2578-9236
    UR  - https://doi.org/10.11648/j.css.20170201.12
    AB  - The changes in the surface chemical properties of SiC suspensions consequent to the addition of polyethylene glycol (PEG) and chitosan, both individually and in the presence of each other were studied. The adsorption densities of PEG and chitosan for SiCwere found to be higher at pH 2-3 and 7-7.5 respectively. The adsorption behaviour in the combined presence of PEG and chitosan was akin to those observed for the individual systems. The isoelectric point (i.e.p.) of SiC was found to be located at pH 3. The addition of chitosan shifted the i.e.p. towards more alkaline pH values, in proportion with the concentration of chitosan added, with a concomitant change in the zeta potentials to less electronegative or more electropositive values. On the contrary, only a marginal change in the electrokineticbehaviour of SiC suspension was found after PEG addition. The favourable pH regimes were established to be 2-6 and 9-11, for the enhanced stability of SiC suspension with the optimum dosage of chitosan. The electrokinetic and dispersion characteristics of the SiC-chitosan system were only slightly altered by the addition of PEG. FTIR spectral investigations provided evidence in support of the proposed hydrogen bonding forces of interaction between SiC and PEG or chitosan.
    VL  - 2
    IS  - 1
    ER  - 

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Author Information
  • Department of Materials Engineering, Indian Institute of Science, Bangalore, India

  • Department of Materials Engineering, Indian Institute of Science, Bangalore, India

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