relation: https://khub.utp.edu.my/scholars/9603/
title: The effect of blend ratios on physico-mechanical properties and miscibility of cross-linked poly(vinyl alcohol)/urea blends
creator: Negim, E.-S.
creator: Bekbayeva, L.
creator: Adam, H.
creator: Yeligbayeva, G.
creator: Ganjian, E.
creator: Saleh, M.
creator: Saad, B.
description: The present study investigates the effect of blend ratios on the miscibility and physico-mechanical properties of polyvinyl alcohol (PVA)/urea (U) blends. PVA/U blends were synthesized in aqueous solution with different blend ratios 65/35, 50/50 and 35/65 respectively, using glacial acetic acid as crosslinking. The properties of PVA/U blends examined included FT-IR, 1 H NMR, 13 C NMR, TGA, DSC and scanning electron microscopy (SEM). The obtained results showed that the miscibility and physico-mechanical properties of PVA/U blends are strongly dependent on PVA ratio in the blends. FT-IR spectroscopy was used to check the hydrogen bonding interaction between PVA and U in the blends. The formation of hydrogen bond was through the lone pair attraction from nitrogen atoms of U towards protonated hydroxyl of PVA. These blends have a single glass transition indicating that these blends are able to form a miscible phase due to the formation of hydrogen bonds. The addition of glacial acetic acid as cross-linking improved the thermal analysis of the blend. The scanning electron microscopy of PVA/U showed crystals of varying sizes with flake shapes compared to the pure PVA. © Published under licence by IOP Publishing Ltd.
publisher: Institute of Physics Publishing
date: 2018
type: Conference or Workshop Item
type: PeerReviewed
identifier:   Negim, E.-S. and Bekbayeva, L. and Adam, H. and Yeligbayeva, G. and Ganjian, E. and Saleh, M. and Saad, B.  (2018) The effect of blend ratios on physico-mechanical properties and miscibility of cross-linked poly(vinyl alcohol)/urea blends.  In: UNSPECIFIED.     
relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85058220536&doi=10.1088%2f1742-6596%2f1123%2f1%2f012066&partnerID=40&md5=d7420572889e6f5011e61c3cc38d9445
relation: 10.1088/1742-6596/1123/1/012066
identifier: 10.1088/1742-6596/1123/1/012066