%V 1123 %R 10.1088/1742-6596/1123/1/012066 %J Journal of Physics: Conference Series %T The effect of blend ratios on physico-mechanical properties and miscibility of cross-linked poly(vinyl alcohol)/urea blends %I Institute of Physics Publishing %A E.-S. Negim %A L. Bekbayeva %A H. Adam %A G. Yeligbayeva %A E. Ganjian %A M. Saleh %A B. Saad %D 2018 %N 1 %O cited By 5; Conference of 5th International Conference on Fundamental and Applied Sciences, ICFAS 2018 ; Conference Date: 13 August 2018 Through 15 August 2018; Conference Code:142772 %X 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. %K Acetic acid; Glacial geology; Glass transition; Mechanical properties; pH; Polyvinyl alcohols; Scanning electron microscopy; Solubility; Thermoanalysis, Blend ratios; FTIR spectroscopy; Glacial acetic acid; Hydrogen bonding interactions; Nitrogen atom; Physicomechanical properties; Poly (vinyl alcohol) (PVA); Single glass transition, Hydrogen bonds %L scholars9603