scholarly journals Polymer assisted colloidal nanocrystal framework synthesis: sol-gel approach

2021 ◽  
Author(s):  
Buzuayehu Abebe
Keyword(s):  
Image Analysis ◽  
Metal Oxides ◽  
Vinyl Alcohol ◽  
Sol Gel ◽  
Compositional Analysis ◽  
Sem Analysis ◽  
Poly Vinyl Alcohol ◽  
Hrtem Image ◽  
Xrd Pattern ◽  
Hsab Theory

Abstract The porous colloidal nanocrystal framework material was synthesized by sol-gel assembly followed by a self-propagation procedure. The characteristics of the synthesized nanocrystal were confirmed by advanced instruments. From the DTG analysis, the poly (vinyl alcohol) was completely degraded at 400 °C. The XRD pattern and TEM image confirmed the nanoscale crystallite size of the material. BET and SEM analysis showed the mesoporous type pore size distribution. The predictable compositional analysis was confirmed from EDX, SAED, and XPS compositional analysis. Using the HSAB theory and HRTEM image analysis the formation of local heterojunction between metal oxides was approved.

scholarly journals DYNAMICAL ASPECTS OF SOL-GEL TRANSITION IN AN AQUEOUS SOLUTION OF POLY (VINYL ALCOHOL)

1984 ◽  
Vol 40 (4-5) ◽  
pp. T158-T160
Author(s):  
Motoko Komatsu ◽  
Takashi Inoue ◽  
Keizo Miyasaka
Keyword(s):  
Aqueous Solution ◽  
Vinyl Alcohol ◽  
Sol Gel ◽  
Poly Vinyl Alcohol ◽  
Sol Gel Transition ◽  
Gel Transition

scholarly journals Viscosity, Miscibility Studies and Mechanical Properties of Pullulan/Poly(vinyl alcohol) Blends at 30 ºC and 40 ºC

2019 ◽  
Vol 32 (2) ◽  
pp. 260-264
Author(s):  
M.S. Jayaprakash ◽  
K Shivakumar ◽  
Shashidhar ◽  
T.K. Vishnuvardhan
Keyword(s):  
Mechanical Properties ◽  
Vinyl Alcohol ◽  
Physical And Mechanical Properties ◽  
Sem Analysis ◽  
Poly Vinyl Alcohol ◽  
Refractive Indices ◽  
Ultrasonic Velocities ◽  
Reduced Viscosity ◽  
Ubbelohde Viscometer ◽  
Miscibility Studies

The miscibility studies of pullulan and poly(vinyl alcohol) (PVA) blends by reduced viscosity measurements, refractometry, mechanical properties and SEM analysis. Viscometric measurements at 30 and 40 ºC were taken using Ubbelohde viscometer. Ultrasonic interferometric was used to measure the ultrasonic velocities of different blend compositions. Refractive indices of blend solutions with different compositions were measured directly with an Abbe′s refractometer with thermostat containing water circulated at 30 and 40 ºC. The mechanical properties, refractive index, ultrasonic velocity and density studies showed that there is an increase of all these with PVA content in the blends. But SEM studies have given an indication of immiscibility in the blend system. Overall, pullulan/PVA blends have shown good physical and mechanical properties particularly for 90/10 composition.

scholarly journals Fabrication of Poly(vinyl alcohol)/Bentonite Nanocomposites Using Sol-Gel Method

2018 ◽  
Vol 30 (10) ◽  
pp. 2210-2214 ◽  
Author(s):  
M. Sirait ◽  
S. Gea ◽  
N. Siregar ◽  
N. Bukit ◽  
E.M. Ginting ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Sol Gel ◽  
Poly Vinyl Alcohol ◽  
Gel Method ◽  
Sol Gel Method
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