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首页> 外文期刊>ACS Macro Letters >Nucleation and Growth of Ordered Copolymer Structures at Reactive Interfaces between PA6 and MA-g-HDPE
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Nucleation and Growth of Ordered Copolymer Structures at Reactive Interfaces between PA6 and MA-g-HDPE

机译：PA6和MA-g-HDPE之间反应性界面上有序共聚物结构的成核和生长

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We have studied the effect of the interfacial chemical reaction between PA6 and MA-g-HDPE in static conditions at a macroscopically flat interface. Interface destabilization and the growth of instabilities, somehow similar to myelin figures observed in surfactants put in the presence of water, are observed. For the first time in this system, it is shown that ordered microphase-separated copolymer domains, whose morphologies depend on the architecture of the copolymer, namely, essentially on the relative length of the blocks on each side of the interface, may nucleate and grow at a static interface between reactive polymers. We discuss the stability of the plane interface in the case of nonsymmetrical formed graft copolymers. The density of copolymers in the interface (coverage) can be estimated accurately from the long period of the formed structures. We confirm the predictions of Berezkin et al. This observation is very important since it confirms that nanometric domains are certainly generated during reactive extrusion, in addition to micrometric domains formed by rheological processes.
机译：我们已经研究了在宏观平面界面上静态条件下PA6和MA-g-HDPE之间的界面化学反应的影响。观察到界面失稳和不稳定性的增长，某种程​​度上类似于在存在水的表面活性剂中观察到的髓磷脂。首次在该系统中显示出，有序的微相分离的共聚物域可以成核并长大，其形态取决于共聚物的结构，即基本上取决于界面两侧的嵌段的相对长度。在反应性聚合物之间的静态界面。我们讨论在非对称形成接枝共聚物的情况下平面界面的稳定性。界面（覆盖层）中共聚物的密度可以根据所形成结构的长期精确估算。我们证实了Berezkin等人的预测。该观察非常重要，因为它证实了除了流变过程形成的微米级区域外，纳米级区域肯定在反应挤出过程中产生。

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