Castor Oil Based Organogels: I. Synthesis,Swelling, and Network Parameters |
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| Authors: | Rasha A M El-Ghazawy Reem K Farag Shymaa M Elsaeed Ezz-Din A Abde-Halim Mohamed A Yossef Wafia E Toyor |
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| Institution: | 1. Petroleum Applications Department , Egyptian Petroleum Research Institute , Nasr City , Cairo , Egypt;2. General Petroleum Company , Cairo , Egypt;3. Faculty of Science, Chemisrty Department , Helan University , Cairo , Egypt |
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| Abstract: | Linear and branched polyesters were prepared by transesterification of methyl recinoleate without or with diethylene glycol, trimethylol propane or pentaerithirtol for different durations. Molecular weight of the synthesized polyesters were determined using gel permeation chromatography and hydroxyl number. Their chemical structure were characterized by FTIR. Crosslinked polyesters were prepared using different weight ratios of trimethylolpropane triacrylate in presence of benzoyl peroxide initiator. These organogels were characterized through soluble fraction and toluene sorption capacity. Swelling kinetics and network parameters including polymer solvent interaction, effective and theoretical crosslink densities, average molecular weight between crosslinks and modulus of elasticity were determined. |
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| Keywords: | Castor oil network parameters organogels |
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