Morphology and thermal properties of clay based biocomposites
| Autor: | Naima Bouslah Mokhnachi, Leila Bounabi, Nabila Haddadine, Regis Barille, Amar Djadoun |
|---|---|
| Přispěvatelé: | Université des Sciences et de la Technologie Houari Boumediene [Alger] (USTHB), MOLTECH-Anjou, Université d'Angers (UA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2018 |
| Předmět: |
[PHYS]Physics [physics]
Morphology (linguistics) Materials science Nanocomposite Polymers and Plastics General Chemical Engineering technology industry and agriculture macromolecular substances 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Montmorillonite chemistry Chemical engineering PEG ratio Thermal Materials Chemistry Polymer blend 0210 nano-technology ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Journal of Polymer Engineering Journal of Polymer Engineering, De Gruyter, 2018, 38 (8), pp.785-793. ⟨10.1515/polyeng-2017-0386⟩ |
| ISSN: | 2191-0340 0334-6447 |
| Popis: | Carboxymethylcellulose/poly(ethylene glycol) (CMC/PEG) blend and CMC/PEG/montmorillonite (MMT) nanocomposites were produced by the solvent casting method. The clay, a sodium MMT, was incorporated in the polymer matrix at low weight loadings (from 1 wt% to 7 wt%). The MMT dispersion in the matrix was evaluated by X-ray diffraction, which revealed an intercalated structure of the nanocomposites. Different levels of intercalation have been detected. The changes in morphology caused by the addition of layered silicate on CMC/PEG blend were investigated by scanning electron microscopy (SEM). The SEM images of CMC/PEG blend containing 5% of MMT displayed more homogenous morphology than CMC/PEG blend. The compatibilizing performance of the filler was investigated using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and Fourier transform infrared (FTIR) spectroscopy. The effect of the introduction of the clay on the crystallization temperature, melting temperature and crystallization degree of CMC/PEG revealed that clay behaved as a nucleating agent and enhanced the crystallization rate of PEG. Furthermore, it was demonstrated that the addition of a small percentage of montmorillonite (1%) was enough to improve the thermal stability of the nanocomposites. |
| Databáze: | OpenAIRE |
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