|
|||||
|
|
Design and Lipase Catalyzed Synthesis of 4-Methylcoumarin-siloxane Hybrid Copolymers |
|
| Authors: | Mukesh K. Pandey Amol Chandekar Rahul Tyagi Virinder S. Parmar Vincent B. Tucci Kenneth D. Smith |
| Affiliation: | 1. Institute of Nano-science and Engineering Technology, Department of Chemistry , University of Massachusetts , Lowell, MA;2. Center for Advanced Materials , University of Massachusetts , Lowell, MA;3. Center for Advanced Materials , University of Massachusetts , Lowell, MA;4. Bio-organic laboratory, Department of Chemistry , University of Delhi , India;5. Department of Chemical Engineering , University of Massachusetts , Amherst, MA |
| Abstract: | Poly dimethylsiloxanes with amino end groups were copolymerized with diesters of 4-methylcoumarins enzymatically using a lipase (Candida antarctica lipase) as a biocatalyst. In a separate synthesis, 4-methylcoumarin was also incorporated into the poly siloxanes-isophthalate copolymers by functionalization of hydroxyl groups in the isophthalate moiety. The synthesis and characterization of two sets of novel copolymers are presented. The thermal and flammability properties of these polymers have also been studied using TGA and microcalorimetry, respectively. |
| Keywords: | Chemo-enzymatic polysiloxanes 4-methylcoumarin Novozyme-435 candida antarctica lipase B flame retardant |