Studies on syntheses and permeabilities of special polymer membranes: 30. Ultrafiltration and dialysis characteristics of cellulose nitrate-poly(vinyl pyrrolidone) polymer blend membranes

Polymer ◽  
1981 ◽  
Vol 22 (6) ◽  
pp. 829-835 ◽  
Author(s):  
Masahiro Tamura ◽  
Tadashi Uragami ◽  
Mizuho Sugihara
Keyword(s):  
Polymer Blend ◽  
Polymer Membranes ◽  
Cellulose Nitrate ◽  
Vinyl Pyrrolidone ◽  
Blend Membranes ◽  
Poly Vinyl Pyrrolidone

Preparation and Characterization of Polymer Blends of Ethyl Cellulose and its Composites

2013 ◽  
Vol 665 ◽  
pp. 336-340 ◽  
Author(s):  
Eknath Nivrtirao ◽  
Basavaraja Sannakki
Keyword(s):  
Activation Energy ◽  
Dielectric Permittivity ◽  
Polymer Blend ◽  
Ethyl Cellulose ◽  
Weight Percent ◽  
Vinyl Pyrrolidone ◽  
X Ray ◽  
Poly Vinyl Pyrrolidone ◽  
Different Thickness

The polymer blend of Ethyl Cellulose (EC) with Poly (vinyl) pyrrolidone (PVP) of various weight percentages at different thickness are used for measurement of dielectric permittivity, electrical conductivity and optical properties. The activation energies of the EC and its blend with PVP are obtained through measurement of dc conductivity. The samples are characterized by using X-ray diffractometer (XRD). The blends of EC with PVP in the ratio of 50:50 weight percent using FTIR over the range of wavenumber 4000-500 cm-1. Key words: Polymer Blend, XRD, SEM, FTIR, dielectric permittivity, activation energy.

Performance Enhancement of Polymeric Blend Membranes Incorporation of Methyl Diethanol amine for CO2/CH4 Separation

2019 ◽  
Vol 41 (3) ◽  
pp. 523-523
Author(s):  
Asim Mushtaq Asim Mushtaq ◽  
Hilmi Mukhtar and Azmi Mohd Shariff Hilmi Mukhtar and Azmi Mohd Shariff
Keyword(s):  
Gas Separation ◽  
Polymer Blend ◽  
Separation Factor ◽  
Polyvinyl Acetate ◽  
Performance Enhancement ◽  
Polymer Membranes ◽  
Operating Pressure ◽  
Blend Membranes ◽  
Day By Day ◽  
Polymeric Blend

For efficient gas separation the membrane technology is rapidly growing day by day and it is more economical and effectual than past technologies. The main objective of this study is to synthesis polymer blend membranes (PBM) using glassy polysulfone (PSU) and rubbery polyvinyl acetate (PVAc) with the addition of methyl diethanol amine for removal of CO2 from CH4. The PBM were developed by varying the composition of PVAc ranging from 5 to 20 wt% with 80 to 100 wt% PSU in DMAc solvent. The amine composition was added to the blend and kept at 10 wt%. The present of MDEA in the PBM had increased the CO2 permeance as compare with the based polymer membranes. However as the operating pressure increased from 2 to 10 bar, the PBM (PSU95%/PVAc5%) with MDEA was found to increase significantly the permeance of CO2, hence increasing the separation factor from 9.980.02 to 30.190.49. EPBM was found a very promising to be used for CO2/CH4 separation.

Pervaporation dehydration of ethyl acetate/ethanol/water azeotrope using chitosan/poly (vinyl pyrrolidone) blend membranes

2009 ◽  
Vol 327 (1-2) ◽  
pp. 274-280 ◽  
Author(s):  
Xiu Hua Zhang ◽  
Qing Lin Liu ◽  
Ying Xiong ◽  
Ai Mei Zhu ◽  
Yu Chen ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Vinyl Pyrrolidone ◽  
Blend Membranes ◽  
Poly Vinyl Pyrrolidone ◽  
Water Azeotrope
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