Flory-Huggins Theory for the Solubility of Heterogeneously Modified Polymers

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• 作者：Patrick B. Warren
• 刊名：Macromolecules
• 出版年：2007
• 出版时间：September 4, 2007
• 年：2007
• 卷：40
• 期：18
• 页码：6709 - 6712
• 全文大小：58K
• 年卷期：v.40,no.18(September 4, 2007)
• ISSN：1520-5835

文摘

Many water-soluble polymers are chemically modified versions of insoluble base materials suchas cellulose. A Flory-Huggins model is solved to determine the effects of heterogeneity in modification on thesolubility of such polymers. It is found that heterogeneity leads to decreased solubility, with the effect increasingwith increasing blockiness. In the limit of extreme blockiness, the nature of the phase coexistence crosses overto a polymer-polymer demixing transition. Some consequences are discussed for the synthesis of partially modifiedpolymers and the experimental characterization of such systems.