Enzyme-Mediated Free Radical Polymerization of Styrene
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- 作者：Amarjit Singh ; Decheng Ma ; and David L. Kaplan
- 刊名：Biomacromolecules
- 出版年：2000
- 出版时间：December 2000
- 年：2000
- 卷：1
- 期：4
- 页码：592 - 596
- 全文大小：72K
- 年卷期：v.1,no.4(December 2000)
- ISSN：1526-4602
文摘
Horseradish peroxidase-mediated polymerization of styrene at ambient temperature is reported. Molecularweight and yield of polystyrene were influenced by solvent, concentration of hydrogen peroxide, and initiator(
-diketones, coumarin). THF:H2O (v/v) and hydrogen peroxide (0.082 mol/L) provided maximum yield ofpolymer (21.2% weight conversion of styrene to polystyrene) with 2,4-pentanedione as initiator. 1,3-Cyclopentanedione and dibenzoylmethane as initiators resulted in higher yield of polymer (~60%) and ahigher molecular weight (Mn = 96 504, polydispersity = 2.16), respectively. This enzymatic strategy wasalso used for the synthesis of polymers from styrene derivatives, 4-methylstyrene and 2-vinylnaphthalene,the latter resulting in a >90% yield of polymer. The presence of the initiators in the polymer chains isreported.
-diketones, coumarin). THF:H2O (v/v) and hydrogen peroxide (0.082 mol/L) provided maximum yield ofpolymer (21.2% weight conversion of styrene to polystyrene) with 2,4-pentanedione as initiator. 1,3-Cyclopentanedione and dibenzoylmethane as initiators resulted in higher yield of polymer (~60%) and ahigher molecular weight (Mn = 96 504, polydispersity = 2.16), respectively. This enzymatic strategy wasalso used for the synthesis of polymers from styrene derivatives, 4-methylstyrene and 2-vinylnaphthalene,the latter resulting in a >90% yield of polymer. The presence of the initiators in the polymer chains isreported.