Synthesis of Hydrogel from Aqueous Solution of Poly(Vinyl Pyrrolidone) with Agar by Gamma-Rays Irradiation

2005 ◽  
Vol 44 (2) ◽  
pp. 243-251 ◽  
Author(s):  
N.C. Dafader* ◽  
M.E. Haque ◽  
F. Akhtar
Keyword(s):  
Aqueous Solution ◽  
Gamma Rays ◽  
Vinyl Pyrrolidone ◽  
Poly Vinyl Pyrrolidone

Aqueous-solution and solid-film properties of poly(vinyl alcohol), poly(vinyl pyrrolidone), gelatin, starch, and carboxymethylcellulose polymers

2007 ◽  
Vol 106 (2) ◽  
pp. 765-774 ◽  
Author(s):  
Venkatesh Mutalik ◽  
Lata S. Manjeshwar ◽  
Ashwini Wali ◽  
Malladi Sairam ◽  
Bojja Sreedhar ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Vinyl Alcohol ◽  
Vinyl Pyrrolidone ◽  
Poly Vinyl Alcohol ◽  
Film Properties ◽  
Solid Film ◽  
Poly Vinyl Pyrrolidone

Using PVP-SDS Complex as a Probe to Study the Effect of n-Butanol on Micellization Behavior of SDS

2012 ◽  
Vol 538-541 ◽  
pp. 2269-2272
Author(s):  
Xiao Ming Chen ◽  
Lin Ren ◽  
Ai Guo Wang ◽  
Ming Di Yang ◽  
Yi Ding
Keyword(s):  
Aqueous Solution ◽  
Sodium Dodecyl Sulfate ◽  
Critical Concentration ◽  
Sodium Dodecyl ◽  
Relative Viscosity ◽  
The Other ◽  
Vinyl Pyrrolidone ◽  
Poly Vinyl Pyrrolidone ◽  
Micellization Behavior ◽  
Butanol Concentration

PVP[poly(vinyl pyrrolidone)]/SDS(sodium dodecyl sulfate) complex was applied as a probe to study the effect of n-butanol on micellization behavior of SDS. It has been found that a critical concentration, namely cs, exists in the relative viscosity versus n-butanol concentration plot. As the n-butanol concentration is less than cs, the relative viscosity of solution containing PVP/SDS complex increased by adding n-butanol into solution successively. On the other hand, as the n-butanol concentration is greater than cs, the relative viscosity of solution containing PVP/SDS complex decreased by adding n-butanol into solution. The increase and the decrease of the relative viscosity of solution containing PVP/SDS complex in the presence of n-butanol is just due to the cosurfactant and the cosolvent effect on micellization behavior of SDS in aqueous solution. Further experimental results indicate that cs is dependent on SDS concentration.

scholarly journals ALD coating of centrifugally spun polymeric fibers and postannealing: case study for nanotubular TiO2 photocatalyst

2021 ◽  
Author(s):  
Martina Rihova ◽  
Oksana Yurkevich ◽  
Martin Motola ◽  
Ludek Hromadko ◽  
Zdeněk Spotz ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Vinyl Pyrrolidone ◽  
Tio2 Photocatalyst ◽  
Polymeric Fibers ◽  
Layer Deposition ◽  
Centrifugal Spinning ◽  
Poly Vinyl Pyrrolidone

This work describes the synthesis of highly photocatalytically active TiO2 tubes (TiTBs) by combining centrifugal spinning and atomic layer deposition (ALD). Poly(vinyl pyrrolidone) (PVP) fibers were first produced by centrifugal...

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