Gel viscosity influenced by nanosilica phase morphology in high and low molecular weights PVA-ex-situ silica hybrids |
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| Authors: | Tridib Bhunia Dipankar Chattopadhyay Abhijit Bandyopadhyay |
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| Affiliation: | (1) Department of Polymer Science and Technology, University of Calcutta, 92, A.P.C. Road, Calcutta, 700009, India; |
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| Abstract: | Change in poly (vinyl alcohol) (PVA) molecular weight has been found to affect nanosilica phase morphology in PVA-ex-situ silica aqueous gel which in turn influences shear viscometric parameters such as near-zero shear viscosity, pseudoplastic index, thixotropic index and net viscosity drop at various levels of nanosilica contents. About 25 °C rise in temperature does not produce any serious changes in these parameters from that studied at room temperature. |
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