Design and Lipase Catalyzed Synthesis of 4-Methylcoumarin-siloxane Hybrid Copolymers

Mukesh K. Pandey Institute of Nano-science and Engineering Technology, Department of Chemistry, University of Massachusetts, Lowell, MA; Center for Advanced Materials, University of Massachusetts, Lowell, MA

Amol Chandekar Center for Advanced Materials, University of Massachusetts, Lowell, MA

Rahul Tyagi Institute of Nano-science and Engineering Technology, Department of Chemistry, University of Massachusetts, Lowell, MA; Center for Advanced Materials, University of Massachusetts, Lowell, MA

Virinder S. Parmar Institute of Nano-science and Engineering Technology, Department of Chemistry, University of Massachusetts, Lowell, MA; Bio-organic laboratory, Department of Chemistry, University of Delhi, India

Vincent B. Tucci Institute of Nano-science and Engineering Technology, Department of Chemistry, University of Massachusetts, Lowell, MA; Center for Advanced Materials, University of Massachusetts, Lowell, MA

Kenneth D. Smith Department of Chemical Engineering, University of Massachusetts, Amherst, MA

Phillip R. Westmoreland Department of Chemical Engineering, University of Massachusetts, Amherst, MA

Ravi Mosurkal U.S. Army Natick Soldier Research Development and Engineering Center, Natick, MA

Jayant Kumar Institute of Nano-science and Engineering Technology, Department of Chemistry, University of Massachusetts, Lowell, MA; Center for Advanced Materials, University of Massachusetts, Lowell, MA

Arthur C. Watterson Institute of Nano-science and Engineering Technology, Department of Chemistry, University of Massachusetts, Lowell, MA; Center for Advanced Materials, University of Massachusetts, Lowell, MA

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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.

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Acknowledgment

Authors gratefully acknowledge financial support from the University of Massachusetts, Lowell, MA. RM thanks the National Research Council (NRC) and US Army Natick Soldier RDEC for research fellowship.

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Design and Lipase Catalyzed Synthesis of 4-Methylcoumarin-siloxane Hybrid Copolymers

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Design and Lipase Catalyzed Synthesis of 4-Methylcoumarin-siloxane Hybrid Copolymers

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