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Preparation and characterization of polystyrene sulfonic acid-co-maleic acid copolymer modified silica nanoparticles

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Abstract:
Two types of s i l a n e s , including 3 - glycidoxy propyl trimethoxy silane (GPTMS) and 3- amino propyl triethoxy silane (APTES), were grafted onto polystyrene sulfonic acid-co-maleic acid (PSSA_MA) first, followed by the grafting reaction to the silica surface. The modification of PSSA_MAonto silica was confirmed through FTIR (Fourier transform infrared spectrum), NMR (Nuclear magnetic resonance), and TGA (Thermogravimetric analysis). The grafting ratio of PSSA_MAvia APTES with 1-ethyl-3-(3- dimethylaminopropyl)-carbodiimide (EDC) activation reached 18.0 %. As for GPTMS case, the grafting ratio reached 14.4 %, which was slightly lower than that of APTES case. The grafting mechanisms for both cases were elucidated. The epoxysilane was found to react with maleic acid groups on PSSA_MA only. On the other hand, the aminosilane not only interacted with sulfonic groups but also activated maleic acid groups via EDC. However, without the use of the coupling agent, the grafting degree of PSSA_MA was only 3 %, which signified the essential role of coupling agents in this organically modified silica. The average particle size of silica was around 200 nm with or without organic modification from transmission electron microscopy (TEM) and Zetasizer analysis. The APTES-modified samples showed the highest improvement in the ion adsorption capacity in all investigated cases.

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Informasi Detail

Judul Seri

Polymer Research

No. Panggil

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Penerbit

: Springer Science., 2016

Deskripsi Fisik

J Polym Res (2016) 23:44

Bahasa

English

ISBN/ISSN

DOI 10.1007/s10965-0

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

Volume 23, Issue 3, March 2016

Subjek

Polymer Research

Info Detail Spesifik

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Pernyataan Tanggungjawab

deliza

Versi lain/terkait

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