Diffusion-Controlled Reactive Coupling at Polymer-Polymer Interfaces
Diffusion-Controlled Reactive Coupling at Polymer-Polymer Interfaces
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DOI：
10.1021/ma047421b
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发表时间：
2005-04
期刊：
影响因子：
5.5
通讯作者：
S. Harton;F. Stevie;H. Ade
中科院分区：
文献类型：
--
作者：
S. Harton;F. Stevie;H. Ade
末端官能化的聚合物A与另一个内端链官能化的聚合物B在A-B界面处的反应性偶联在技术上被称为反应性增容。这是一种经证实的降低界面张力和改善聚合物共混物中微区之间粘附力的方法。1在反应体系中，无论是小分子还是大分子，通常描述反应限速机制的两种机制分为扩散和反应控制2如下定义的无量纲达姆科勒数（NDa）可用于确定哪种状态主导特定反应。3
Reactive coupling of an end-functionalized polymer A with another endor chain-functionalized polymer B at an A-B interface is technologically referred to as reactive compatibilization. It is a proven means by which to reduce interfacial tension and improve adhesion between domains in polymer blends.1 In reactive systems, whether small-molecule or macromolecular in nature, the two regimes that generally describe the ratelimiting mechanism of the reaction are classified as diffusionand reaction-controlled (DC and RC, respectively) regimes.2 A dimensionless Damkohler number (NDa) as defined below can be used to determine which regime dominates a particular reaction.3