رسالة جامعية
Towards a Versatile and Sustainable Platform for Tailor-Made Adhesives
| العنوان: | Towards a Versatile and Sustainable Platform for Tailor-Made Adhesives |
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| المؤلفون: | Tan, Chen |
| المساهمون: | Docent Sami Hietala, University of Helsinki, Professor Carl-Eric Wilén, Åbo Akademi University, Finland, Laboratory Engineer Teija Tirri, Åbo Akademi University, Turku, Faculty of Science and Engineering, Fakulteten för naturvetenskaper och teknik, Luonnontieteiden ja tekniikan tiedekunta |
| بيانات النشر: | Åbo Akademi - Åbo Akademi University |
| سنة النشر: | 2022 |
| المجموعة: | Doria (National Library of Finland / |
| مصطلحات موضوعية: | 215 Chemical engineering, 215 Teknisk kemi, kemisk processteknik, 215 Teknillinen kemia, kemian prosessitekniikka, Polymer Technology, Teknisk polymerkemi, Teknillinen polymeerikemia |
| الوصف: | The main objective of the present thesis work was to explore the possibility to design and synthesize versatile environmental-friendly adhesives and to adjust their properties to be suitable for different purposes by studying the adhesives structure-property relationships. The thesis consists of a summary part and three articles. Three different types of adhesives were developed in this study and the main results have been published in three articles. In the first part of this study, the aim was to develop poly(styrene-co-butyl acrylate) emulsion based adhesives that simultaneously exhibit high cohesive and adhesive strength via structured core–shell particle design. The structure–property relationship was examined by various characterization methods including size-exclusion chromatography (SEC), cryogenic transmission electron microscopy (cryoTEM), differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). Optimized properties were achieved by changing the core–shell ratio, degree of crosslinking of the core by using different concentrations of ethylene glycol dimethacrylate (EGDMA) and modification of the soft shell by varying the concentration of a thiol based chain transfer agent (CTA). Crosslinking of the core part enabled high cohesive strength of the adhesive, whilst the relatively soft shell facilitated high adhesion by enabling the proper wetting of the substrate. The optimal adhesive performance in terms of tack, peel strength and shear strength were achieved when the latex particles had a crosslinked core, a shell prepared without CTA and a core–shell ratio of 1:1.5. Thus, the goal of combining sufficient energy storage and energy dissipation properties in one particle through structured particle design was successful. In the second part, a number of chain-extended moisture-curable urethane prepolymers were synthesized in order to develop isocyanate terminated urethane prepolymer formulations that would at the same time display both high adhesive strength and low viscosity. Proton ... |
| نوع الوثيقة: | doctoral or postdoctoral thesis |
| وصف الملف: | compositeOnly; true |
| اللغة: | English |
| ردمك: | 978-952-12-4196-3 978-952-12-4197-0 952-12-4196-9 952-12-4197-7 |
| العلاقة: | https://www.doria.fi/handle/10024/185320Test; URN:ISBN:978-952-12-4197-0 |
| الإتاحة: | https://www.doria.fi/handle/10024/185320Test |
| حقوق: | This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. ; Publikationen är skyddad av upphovsrätten. Den får läsas och skrivas ut för personligt bruk. Användning i kommersiellt syfte är förbjuden. ; Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty. |
| رقم الانضمام: | edsbas.1AAC64FD |
| قاعدة البيانات: | BASE |
| ردمك: | 9789521241963 9789521241970 9521241969 9521241977 |
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