Polytetrahydrofuran Clay Nanocomposites by In Situ Polymerization and Click Chemistry Processes
Yazarlar (6)
Mehmet Atilla Tasdelen Ghent University, Belçika
Camp Wim Van
Eric Goethals
Ghent University, Belçika
Ghent University, Belçika
Philippe Dubois University of Mons, Belçika
Prez Filip Du
Öğr. Gör. Yusuf Yagci Istanbul Technical University, Türkiye
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | MACROMOLECULES (Q1) | ||
| Dergi ISSN | 0024-9297 Dergi Bilgileri (2008) | ||
| Dergi Tarandığı Indeksler | SCI | ||
| Makale Dili | İngilizce | Basım Tarihi | 08-2008 |
| Kabul Tarihi | – | Yayınlanma Tarihi | 23-07-2008 |
| Cilt / Sayı / Sayfa | 41 / 16 / 6035–6040 | DOI | 10.1021/ma801149x |
| Makale Linki | http://pubs.acs.org/doi/abs/10.1021/ma801149x | ||
| UAK Araştırma Alanları |
Polimer Bilimi
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| Özet |
| Polytetrahydrofuran (PTHF)/clay nanocomposites were prepared by two routes: in situ cationic ring opening polymerization (CROP) and a method involving "click" chemistry. In the first method, PTHF chains were grown from the surface of the organo-modified montmorillonite clay by CROP of tetrahydrofuran (THF) through the hydroxyl functions of the clay by using trifluoromethanesulfonic anhydride, in the presence of 2,6-di-tert-butylpyridine as proton trap and dichloromethane as solvent. The polymerizations were affected by the clay content ratios. The living characteristics of the polymerization were demonstrated by the semilogarithmic first order kinetic plot. In the second method, CROP of THF has been performed independently to produce alkyne-functionalized PTHF and the obtained polymers were subsequently anchored to azide-modified clay layers by a "click" reaction. The exfoliated polymer/clay nanocomposites obtained by both methods were characterized and compared by X-ray diffraction spectroscopy, thermogravimetric analysis, and transmission electron microscopy. Compared to the virgin polymer, the nanocomposites exhibited improved thermal stabilities regardless of the preparation method. However, the nanocomposites prepared by the "click" chemistry approach appeared to be thermally more stable than those prepared by in situ polymerization. Moreover, the "click" chemistry method also provided better exfoliation. |
| Anahtar Kelimeler |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Web of Science | 109 |