Nanocomposites and Blends of Biocatalytically Synthesized Organosilicone Co-Polymers for Flame Retardant Applications |
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| Authors: | Vijayendra Kumar Bhavna Gupta Pramod K Sharma Ravi Mosurkal Virinder S Parmar Jayant Kumar |
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| Institution: | 1. Institute of Nano-Science and Engineering Technology, Department of Chemistry , University of Massachusetts Lowell , Lowell, MA, 01854;2. Center for Advanced Materials , University of Massachusetts Lowell , Lowell, MA, 01854;3. Bio-organic Laboratory, Department of Chemistry , University of Delhi , Delhi, 110 007, India;4. Center for Advanced Materials , University of Massachusetts Lowell , Lowell, MA, 01854;5. U.S. Army Natick Soldier Research Development and Engineering Center , Natick, MA, 01760 |
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| Abstract: | The great synthetic flexibility of organosilicone polymers, their ease of processing, low cost, and nontoxic nature present an attractive alternative solution over current flame retardant materials. Novozyme-435 catalyzed amidation reaction with silicone-based oligomer was carried out to scale up the synthesis of co-polymer which was fully characterized from its detailed spectroscopic studies. Synthesized co-polymer was compounded in polyolefins for flame retardant applications. Nanoclay Cloisite 20A, 2C18 MMT (dimethylditallowammonium-/dimethyldioctadecylammonium-modified montmorillonite)] was used as a potential additive in co-polymer, which was then blended with polyolefins to improve their thermal as well as flame retardant properties. The present work provides an initial exciting basis for the enzymatic synthesis of silicon based co-polymers in bulk and their flame retardant applications. |
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| Keywords: | Novozyme-435 Candida Antarctica Lipase B Organosilicon co-polymer flame retardant polymers nanocomposites nanoclay polypropylene polyethylene thermogravimetric analysis (TGA) pyrolysis-combustion flow calorimetry (PCFC) |
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