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Development of a simulation based design of clay nanocomposites.
Small amounts of nanosized clay particles dispersed in a polymer matrix very significantly alters the mechanical and thermal properties of the composite.
Result of MD simulation showing organically modified clay with modifier in the sodium montmorillonite interlayer interacting with clay sheets
Photoacoustic FTIR study of clay, organically modified clay and the modifier
Mechanical Properties of Sodium Montmorillonite Interlayer Intercalated with Amino Acids
Nanosized montmorillonite clay dispersed in small amounts in polymer results in polymer nanocomposites having superior engineering properties compared to native polymer. These nanoinclusions are created by treating clay with an organic modifier which makes clay organophilic and results in intercalation or exfoliation of the montmorillonite. The modifiers used are usually long carbon chains with alkylammonium or alkylphosphonium cations. In this work, we have investigated the use of some alternative molecules which can act as modifiers for clay composites using clay for reinforcing a matrix of biopeptides or proteins. Such composites have potential applications in the field of biomedical engineering and pharmaceutical science. In this work, amino acids arginine and lysine are used as modifiers. The intercalation and mechanical behavior of the interlayer spacing with these amino acids as inclusions under compression and tension is studied using molecular dynamics simulations. Significant and unexpected differences in the responses are observed. This work also provides an insight into the orientation and interaction of amino acids in the interlayer under different stress paths.
Coming soon : More Results
Debashis Sikdar (Ph.D.)
Pijush Ghosh (Ph.D.)
Steven Schmidt (M.S.) (Graduated)
Devendra Verma (Ph.D.)
Rahul Bhowmik (Ph.D.)
Bedabibhas Mohanty (Ph.D.)
Follow this link for our work on clay water interactions
Partial Support: NDSU Center for High Performance Computing
© Dr. Dinesh R. Katti, North Dakota State University
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Dinesh Ramanath Katti and Kalpana Shastri Katti