Electrophysical characteristics of polyurethane/organo-bentonite nanocomposites
Modification of the Egyptian Bentonite (EB) was carried out using organo-modifier namely; octadecylamine ODA. Before the modification, the cation exchange capacity (CEC) of the EB was measured, also it was purified from different impurities using HCl and distilled water. The Organo-bentonite OB was...
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| Format: | Article |
| Language: | English |
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Egyptian Petroleum Research Institute
2014-12-01
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| Series: | Egyptian Journal of Petroleum |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1110062114000646 |
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| author | A.M. Motawie M. Madani E.A. Esmail A.Z. Dacrorry H.M. Othman M.M. Badr D.E. Abulyazied |
| author_facet | A.M. Motawie M. Madani E.A. Esmail A.Z. Dacrorry H.M. Othman M.M. Badr D.E. Abulyazied |
| author_sort | A.M. Motawie |
| collection | DOAJ |
| description | Modification of the Egyptian Bentonite (EB) was carried out using organo-modifier namely; octadecylamine ODA. Before the modification, the cation exchange capacity (CEC) of the EB was measured, also it was purified from different impurities using HCl and distilled water. The Organo-bentonite OB was characterized using IR, XRD, and TEM. PU/ODA-B nanocomposites were prepared by in situ polymerization then characterized by XRD and TEM. An amount of ODA-B ranging from 0.25% up to 5% by weight was added to the polyol component of the resin before mixing with toluene diisocynate TDI. TEM showed that the nanocomposites achieved good dispersion in the polyurethane matrix. The mechanical, swelling and electrical properties of the nanocomposites were measured. The results indicate that the tensile strength of all the nanocomposites enhanced with the addition of OB compared with the pure PU. The crosslink density of the nanocomposites increases with increasing the content of OB. The Pool–Frenckel conduction mechanism predominates for all the nanocomposite samples and the blank one. |
| format | Article |
| id | doaj-art-cd8c1a36dc0d42cd8e3cd2d2b67c4eb2 |
| institution | DOAJ |
| issn | 1110-0621 |
| language | English |
| publishDate | 2014-12-01 |
| publisher | Egyptian Petroleum Research Institute |
| record_format | Article |
| series | Egyptian Journal of Petroleum |
| spelling | doaj-art-cd8c1a36dc0d42cd8e3cd2d2b67c4eb22025-08-20T03:19:35ZengEgyptian Petroleum Research InstituteEgyptian Journal of Petroleum1110-06212014-12-0123437938710.1016/j.ejpe.2014.09.005Electrophysical characteristics of polyurethane/organo-bentonite nanocompositesA.M. Motawie0M. Madani1E.A. Esmail2A.Z. Dacrorry3H.M. Othman4M.M. Badr5D.E. Abulyazied6Polymer Laboratory, Petrochemical Dept., Egyptian Petroleum Research Institute, Nasr City, Cairo, EgyptRadiation Physics Dept., National Center for Radiation Research and Technology, Nasr City, Cairo, EgyptPolymer Laboratory, Petrochemical Dept., Egyptian Petroleum Research Institute, Nasr City, Cairo, EgyptPhysics Dept., College of Girls, Ain Shams University, Cairo, EygptPhysics Dept., Faculty of Science, Cairo University, Giza, EgyptPolymer Laboratory, Petrochemical Dept., Egyptian Petroleum Research Institute, Nasr City, Cairo, EgyptPolymer Laboratory, Petrochemical Dept., Egyptian Petroleum Research Institute, Nasr City, Cairo, EgyptModification of the Egyptian Bentonite (EB) was carried out using organo-modifier namely; octadecylamine ODA. Before the modification, the cation exchange capacity (CEC) of the EB was measured, also it was purified from different impurities using HCl and distilled water. The Organo-bentonite OB was characterized using IR, XRD, and TEM. PU/ODA-B nanocomposites were prepared by in situ polymerization then characterized by XRD and TEM. An amount of ODA-B ranging from 0.25% up to 5% by weight was added to the polyol component of the resin before mixing with toluene diisocynate TDI. TEM showed that the nanocomposites achieved good dispersion in the polyurethane matrix. The mechanical, swelling and electrical properties of the nanocomposites were measured. The results indicate that the tensile strength of all the nanocomposites enhanced with the addition of OB compared with the pure PU. The crosslink density of the nanocomposites increases with increasing the content of OB. The Pool–Frenckel conduction mechanism predominates for all the nanocomposite samples and the blank one.http://www.sciencedirect.com/science/article/pii/S1110062114000646NanocompositesPolyurethaneBentoniteOrgano-bentoniteTEMCrosslink density |
| spellingShingle | A.M. Motawie M. Madani E.A. Esmail A.Z. Dacrorry H.M. Othman M.M. Badr D.E. Abulyazied Electrophysical characteristics of polyurethane/organo-bentonite nanocomposites Egyptian Journal of Petroleum Nanocomposites Polyurethane Bentonite Organo-bentonite TEM Crosslink density |
| title | Electrophysical characteristics of polyurethane/organo-bentonite nanocomposites |
| title_full | Electrophysical characteristics of polyurethane/organo-bentonite nanocomposites |
| title_fullStr | Electrophysical characteristics of polyurethane/organo-bentonite nanocomposites |
| title_full_unstemmed | Electrophysical characteristics of polyurethane/organo-bentonite nanocomposites |
| title_short | Electrophysical characteristics of polyurethane/organo-bentonite nanocomposites |
| title_sort | electrophysical characteristics of polyurethane organo bentonite nanocomposites |
| topic | Nanocomposites Polyurethane Bentonite Organo-bentonite TEM Crosslink density |
| url | http://www.sciencedirect.com/science/article/pii/S1110062114000646 |
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