低分子量側鎖結晶性高分子を分散させたアクリル系粘着剤の'ウォーム－オフ'機構の解明
| Jazyk: | japonština |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | 長崎大学大学院工学研究科研究報告. 42(79):48-53 |
| ISSN: | 1880-5574 |
| Popis: | A pressure sensitive adhesive (PSA) is one that adheres instantly to an adherend through the application of light pressure, and detaches easily and without residue by pulling lightly. A PSA losing its adhesion rapidly above a certain temperature is called “warm-off” (WO) type one. A PSA containing a copolymer with a long alkyl chain as its crystalline component is one of the WO type ones. The WO mechanism is, however, not yet well-understood. Our aim is to propose the WO mechanism demonstrated experimentally. To establish the WO mechanism, PSAs consisting of a base resin and the crystalline copolymer were examined for their surface morphologies by tapping-mode atomic force microscopy. As the results, we propose a possible mechanism as follows: (i) sphere particles assignable to the crystalline component are dispersed on the surface of the base resin; (ii) the particles are covered by the base resin as the PAS adheres to an adherend through the application of light pressure; (iii) after heating above the fusion temperature of the crystalline component, the melted crystalline component comes out to the interface between the PSA and adherend, which leads to losing its adhesion. 長崎大学大学院工学研究科研究報告, 42(79), pp.48-53; 2012 |
| Databáze: | OpenAIRE |
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