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Preparation and characterization of thermally stable phosphonium organoclays and their use in poly(ethylene terephthalate) nanocomposites
Date
2013-06-15
Author
Abdallah, Wissam
Yılmazer, Ülkü
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Purification of montmorillonite rich bentonite followed by surface modification using organic salts was performed. The bentonite was purified by sedimentation and then surface modified by ion exchange using alkyl- and aryl-based phosphonium salts. The thermal stability, morphology, melt flow, and mechanical properties of the poly(ethylene terephthalate) (PET) nanocomposites prepared with these organoclays were studied with and without using a reactive elastomeric compatibilizer. TEM results showed that the alkyl based organoclay exhibited better dispersion and thus, higher tensile strength and elongation at break in the PET/organoclay/elastomer ternary nanocomposites than the aryl-based organoclay did. The notched Charpy impact strength of PET increased from 2.9 to 4.7 kJ m2 and 3.4 kJ m2 for alkyl and aryl phosphonium organoclay-based ternary nanocomposites, respectively. Upon compounding PET with alkyl and aryl phosphonium organoclays, the onset decomposition temperature of PET increased from 413 degrees C to 420 degrees C and 424 degrees C, respectively. (c) 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Subject Keywords
Materials Chemistry
,
General Chemistry
,
Surfaces, Coatings and Films
,
Polymers and Plastics
URI
https://hdl.handle.net/11511/56911
Journal
JOURNAL OF APPLIED POLYMER SCIENCE
DOI
https://doi.org/10.1002/app.38651
Collections
Graduate School of Natural and Applied Sciences, Article
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W. Abdallah and Ü. Yılmazer, “Preparation and characterization of thermally stable phosphonium organoclays and their use in poly(ethylene terephthalate) nanocomposites,”
JOURNAL OF APPLIED POLYMER SCIENCE
, pp. 4283–4293, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/56911.