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Title of Journal: Polym Bull

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Abbravation: Polymer Bulletin

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Springer Berlin Heidelberg

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DOI

10.1007/s10337-011-1970-1

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1436-2449

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Silane treatment of magnetite filler and its effec

Authors: M S Boon M Mariatti
Publish Date: 2014/09/19
Volume: 71, Issue: 12, Pages: 3333-3346
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Abstract

Surface modification of magnetite by 3aminopropyltriethoxysilane coupling agent 3APTES at different percentages 5 10 and 20 wt with variable treatment times 3 5 and 7 h was performed The effects of these two variables on the properties of magnetitefilled epoxy thinfilm composite were investigated Treated composites exhibited higher saturation magnetization storage modulus and T g than untreated composites Increasing 3APTES amount associated with increasing treatment time improved both the interfacial adhesion of magnetite filler matrix and the properties of treated composites However using a comparison system at a fixed treatment time the system treated with a higher concentration of 3APTES exhibited lower saturation magnetization than that treated with a lower concentration This result can be attributed to the thick coating on the filler surface that acted as a nonmagnetic mass to the total sample volume and subsequently reduced the magnetization efficiency

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