Relation between the adhesion strength and interfacial width for symmetric polystyrene bilayers
Relation between the adhesion strength and interfacial width for symmetric polystyrene bilayers
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DOI：
10.1002/polb.21020
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发表时间：
2006-12-15
影响因子：
--
通讯作者：
Nagamura, Toshihiko
中科院分区：
文献类型：
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作者：
Akabori, Kei-Ichi;Baba, Daisuke;Nagamura, Toshihiko
制备了聚苯乙烯（PS）双层膜，并在表面和本体玻璃化转变温度之间的温度下粘附给定的时间。然后，用常规的搭接剪切测量检查界面粘合强度（G（L））。G（L）先随粘附时间的增加而增加，然后达到恒定值。这一结果表明，即使在低于体相玻璃化转变温度的温度下，片段也会穿过界面移动到一定的深度。为了证实这一点，PS/氘代PS双层膜的界面演变进行了检查与动态二次离子质谱。G（L）值与界面粘结层的厚度呈线性关系。最后，我们提出了一个策略，用于调节的基础上的链端化学的粘附强度。(c)2006 Wiley Periodicals，Inc.
Polystyrene (PS) bilayers were prepared and were adhered at a temperature between the surface and bulk glass-transition temperatures for a given time. Then, the interfacial adhesion strength (G(L)) was examined with a conventional lapshear measurement. G(L) first increased with increasing adhesion time and then reached a constant value. This result implied that the segments moved across the interface, to a certain depth, even at a temperature below the bulk glass-transition temperature. To confirm this, the interfacial evolution for the PS/deuterated PS bilayers was examined with dynamic secondary-ion mass spectrometry. The G(L) value was linearly proportional to the thickness of the interfacial adhesion layer. Finally, we propose a strategy for regulating the adhesion strength based on the chain-end chemistry. (c) 2006 Wiley Periodicals, Inc.