Beyond Dispersity: Deterministic Control of Polymer Molecular Weight Distribution

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• 作者：Dillon T. Gentekos ; Lauren N. Dupuis ; Brett P. Fors
• 刊名：Journal of the American Chemical Society
• 出版年：2016
• 出版时间：February 17, 2016
• 年：2016
• 卷：138
• 期：6
• 页码：1848-1851
• 全文大小：343K
• ISSN：1520-5126

文摘

The breadth of the molecular weight distributions (MWD) of polymers influences their physical properties; however, no synthetic methods allow precise control of the exact shape and composition of a distribution. We report a modular strategy that enables deterministic control over polymer MWD through temporal regulation of initiation in nitroxide-mediated polymerization reactions. This approach is applicable to any controlled polymerization that uses a discrete initiator, and it allows the use of MWD composition as a parameter to tune material properties.