Publications by authors named "Urvashi S Joshi"
We report the solvent-evaporation and ionic cross-linking mediated self-assembly of the shell cross-linked micelles of the amphiphilic triblock copolymer containing middle poly(methyl methacrylate) block (hydrophobic) and poly(2-dimethylamino)ethyl methacrylate end blocks (hydrophilic) on the membrane substrate to create molecular selective channels. The formation of selective channels on the substrate is attributed to the local increase of micelle concentration upon solvent evaporation, which leads to the core-core hydrophobic interaction. The post-ionic cross-linking of the shell part further reduces the intermicelle distance, thereby creating interstices for selective separation.
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- The study explores a new method for creating high-performance molecular selective membranes using layer-by-layer (LbL) self-assembly with polyelectrolytes, focusing on anionic and cationic interactions.
- The research compares two approaches to membrane formation: concentration-polarization LbL (under pressure) and conventional dipping LbL, highlighting the superior performance of membranes created with specific first layer materials.
- Results show that membranes exhibit high dye rejection rates and effective separation of salts, while maintaining stability under various conditions, paving the way for improved membrane technologies in wastewater treatment and filtration applications.
Bacterial contaminated water causes potential health issues. Conventional chlorine treatment has shortcomings of environmental hazards and chlorine adoptability by the bacterial cells. Ultrafiltration membrane can intercept bacterial species from feed water.
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