Development Of Hydrophobic Organoclays By Various Substituents
Student Team/ Author :
Atindra D. Shukla,
Manish Kumar Mishra,
Dinesh O. Shah,
Toyoko Imae
Guide By :
Self and Final stage Dr. Atindra Shukla
Degree :
ENGINEERING GEO-SCIENCE (PhD thesis)
College :
SSCSSN, DDU, Nadiad
The montmorillonite clays were modified with quaternary ammonium salts (QASs) having different alkylchain lengths and a benzyl substitute group. The modified organoclays were characterized by different analytical techniques. The wettability and hydrophilicity/hydrophobicity of the modified clays was evaluated using water or oil penetration (adsorption) and contact angle measurements. The loading of QASs
was in the range of 0.60–0.75 mmol/g per clay, irrespective of the type of QAS used for the modification of
the clay. From the analytical investigations, it was elucidated that the modification of clay with QAS
affected the structural, textural, and surface properties. Moreover, it should be noted that the modification with QAS having benzyl substitute group resulted in water-non-wettable and superhydrophobic surface, whereas clays modified with QAS without benzyl substitute group became more water-wettable
and hydrophilic than the pristine clay. The presence of benzyl groups on the clay prevents water from
penetration into the inter-clay or interlayer spacing, which yields
I was a First student working as Porject Assistant at "Shah-Schuleman Center for Surface Science and Nanotechnology (SSCSSN) at DDUniversity, Nadiad, Gujarat under the guidance of Prof. Dinesh O. Shah "University of Florida". This project was sponsored by "JANI CLAYS" and we have to develop Organ clays for Paint and Oil industries.
During this project we have develop some good fundamental studies regarding behaviour and arrangements of quaternary ammonium salts (QAS). This project was corelated with taiwan university latly to geting publication purpose with Prof Toyoko Imae.
We have developed 9 commercial products with different QAS surfactants.
Further Detail -
http://www.janiclays.com/
http://sscssn.ddu.ac.in/
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