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Dergiler / Journal of the Turkish Chemical Society Section A: Chemistry / 2026 / Volume: 5 Issue: 2

PVA Nanocomposites Of Organoclays Obtained Using Different Cationic Surfactants

Cüneyt H. Ünlü(Istanbul Technical University, Science & Letters Faculty, Chemistry Department, Maslak, Istanbul)
Sevim İşçi Turutoğlu(Istanbul Technical University, Science & Letters Faculty, Physics Department, Maslak, Istanbul)
Oya Galioğlu Atıcı(Istanbul Technical University, Science & Letters Faculty, Chemistry Department, Maslak, Istanbul)
Ömer Işık Ece(Istanbul Technical University, Faculty of Mines, Department of Geology, Maslak, Istanbul)
Nurfer Güngör(Istanbul Technical University, Science & Letters Faculty, Physics Department, Maslak, Istanbul)
Sayfa
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Yayın Tarihi
2018-01-01
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Also activation energy of the decomposition was observed ca. 40 kj mol -1 higher than pristine PVA.

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Amaç & Hipotez:This study is about preparation of two different organoclays with cationic surfactants and their poly(vinyl alcohol) nanocomposites with increased thermal and mechanical behavior.
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Temel Bulgular & Veri:Results indicated an absolute decrease in zeta potential about 20 mV for C-MMT, and 14 mV for D-MMT indicating flocculation and coating of the surface.
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Sonuç & Katkı:Also activation energy of the decomposition was observed ca. 40 kj mol -1 higher than pristine PVA.
🔬Tür:Research Article
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Polymer/clay nanocomposites · Organoclay · Poly(vinyl alcohol) (PVA)

Abstract

This study is about preparation of two different organoclays with cationic surfactants and their poly(vinyl alcohol) nanocomposites with increased thermal and mechanical behavior. Organoclays were prepared modifying clay mineral with solution intercalation method using aqueous solutions of cationic surfactants dodecyltrimethylammonium bromide (DTABr) and cetylpyridinium bromide (CPBr). Obtained organoclays (D-MMT and C-MMT for DTABr/MMT and CPBr/MMT, respectively) were characterized using different methods including zeta potential and XRD. Results indicated an absolute decrease in zeta potential about 20 mV for C-MMT, and 14 mV for D-MMT indicating flocculation and coating of the surface. Moreover measurements indicated that interlayer distance increased based on basal spacing peak shift whose value was 1.27 nm for NaMMT, whereas 1.40 nm for D-MMT, and 1.75 nm for C-MMT. The organoclays were used in preparation of PVA/clay nanocomposites; thermal stability of the nanocomposites were determined using TGA, while mechanical strength measurements were done using DMA. Maximum thermal decomposition temperature of the pristine PVA and nanocomposites were compared and an average increase of 4°C were observed. Also activation energy of the decomposition was observed ca. 40 kj mol -1 higher than pristine PVA.

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Bu Makaleye Atıf Yap

Ünlü, C. H., Turutoğlu, S. İ., Atıcı, O. G., Ece, Ö. I., Güngör, N. (2018). PVA Nanocomposites Of Organoclays Obtained Using Different Cationic Surfactants. Journal of the Turkish Chemical Society Section A: Chemistry, Volume: 5 Issue: 2. https://doi.org/10.18596/jotcsa.307602

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