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Başlık: Effect of CEC coverage of hexadecyltributylphosphonium modified montmorillonite on polymer compatibility
Yazarlar: Çelik, Mehmet S.
Carty, William M.
Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.
0000-0002-2047-3169
Hojiyev, Rustam
Ulcay, Yusuf
36026524100
6601918936
Anahtar kelimeler: Chemistry
Materials Science
Mineralogy
CEC coverage
Clay-polymer compatibility
Contact angle
Hexadecyltributylphosphonium bromide
Hydrophobicity
Na-montmorillonite
Organoclay
Porosity
Surface area
Van-der-waals
Phosphonium-montmorillonite
Quaternary phosphonium
Modified nanoclays
Nanocomposites
Organoclays
Adsorption
Morphology
Energy
Layer
Clay minerals
Contact angle
Hydrophobicity
Ion exchange
Organoclay
Porosity
X ray diffraction analysis
Cation exchange capacities
CEC coverage
Hexadecyltributylphosphonium bromide
Intercalation behavior
Modified montmorillonite
Na-montmorillonite
Specific surface area (SSA)
Surface area
Adsorption
Cation exchange capacity
Hhydrophobicity
Montmorillonite
Organoclay
Polymer
Porosity
Surface area
Polymers
Yayın Tarihi: 28-Şub-2017
Yayıncı: Elsevier
Atıf: Hojiyev, R. vd. (2017). ''Effect of CEC coverage of hexadecyltributylphosphonium modified montmorillonite on polymer compatibility''. Applied Clay Science, 141, 204-211.
Özet: The present work was aimed to investigate polymer compatibility of hexadecyltributylphosphonium bromide (HDTBPh) modified Na-montmorillonite (Na-Mt) at different cation exchange capacity (CEC) coverages. The Na-Mt was modified at five different CEC coverages in the range of 60%-150%. The morphology, porosity, and thermal and surface properties of HDTBPh in Na-Mt interlayer were investigated. The intercalation behavior of HDTBPh investigated by X-ray diffractometry showed that the door-value reached a maximum of 23.4 angstrom at 125% CEC coverage. The specific surface area (SSA) and porosity were investigated by N-2 adsorption at -197 degrees C temperature. The SSA decreased from 57.19 m(2)/g to 24.11 m(2)/g at 150% CEC coverage, as opposed to the porosity which increased upon interaction with HDTBPh and led to a more open structure. The thermal stability, investigated by themogravimetry (TGA), slightly decreased with increasing CEC coverage. The CEC coverage of HDTBPh was found to play an important role in the clay-polymer compatibility. A simple acid-base approach involving the calculation of total energy of interaction between Na-Mt surface and polymer surface (Delta G(clay)(IF)/(poiymer/clay)) was developed to evaluate the clay-polymer compatibility. While the positive value of Delta G(clay/Polymer/Clay)(IF) indicated the clay-polymer compatibility, the negative value was ascribed to no polymer compatibility. The calculated value of Delta G(clay/Polymer/Clay)(IF) was critical for proper selection of CEC coverage for each polymer.
URI: https://doi.org/10.1016/j.clay.2017.02.036
https://www.sciencedirect.com/science/article/pii/S0169131717301011
http://hdl.handle.net/11452/29324
ISSN: 0169-1317
1872-9053
Koleksiyonlarda Görünür:Scopus
Web of Science

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