Chemical compatibility of PU/PAN interpenetrating polymer network membrane with substituted aromatic solvents

Kumar, Harinandan; Siddaramaiah,

doi:10.1016/j.jhazmat.2007.02.062

Cited by 4 publications

(8 citation statements)

References 27 publications

(29 reference statements)

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“…Therefore, spongy structures with plenty of pinholes are visualized in the cross sectional SEM images. 51 Therefore, only PAN/PU blend membranes were characterized and examined for application in the treatment of turbid water. The general trend describes that the membrane thickness was mostly altered by the thermodynamic and kinetic behavior of the casting solution.…”

Section: Morphological Study By Semmentioning

confidence: 99%

Preparation, characterization and antifouling properties of polyacrylonitrile/polyurethane blend membranes for water purification

Panda

2015

RSC Adv.

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Casting of flat sheet polyacrylonitrile (PAN)/polyurethane (PU) blend membranes was reported for the first time in this work. PU makes the membrane more porous. Ternary phase diagram indicates that the addition of PU increases the thermodynamic instability of the blend. The average pore size of the membrane increased from 11 nm to 18 nm for pure PAN and the PAN/PU blend membranes. The membranes were characterized in terms of permeability, porosity, molecular weight cut-off (MWCO), contact angle, mechanical strength, scanning electron microscope (SEM), atomic force microscope (AFM), differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FTIR). The AFM images indicated that the surface roughness of the membrane increased with an increase in the concentration of PU. Addition of PU also imparted hydrophilicity to the membranes. FTIR and DSC measurements confirm the polymer compatibility of the PAN/PU blend. The PAN/PU blend 70/30 membrane exhibited the maximum antifouling characteristics with a 99% flux recovery ratio associated with the complete removal of turbidities and organic matter.

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Section: Morphological Study By Semmentioning

confidence: 99%

Preparation, characterization and antifouling properties of polyacrylonitrile/polyurethane blend membranes for water purification

Panda

2015

RSC Adv.

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“…Figure indicates that hexane uptake is highest as compared to other solvents; this is due to the low molecular volume of the hexane than other n ‐alkanes. The sorption pattern remains same even at higher temperature . Figure shows that as the temperature increases, the S values also increase for all membranes.…”

Section: Techniquesmentioning

confidence: 68%

“…The increase in temperature may also lead to reduction in inter-and intramolecular forces between polymer chain. 36 This result indicates that the sorption behavior depends on temperature. Generally, the solvent uptake in green composite membranes is based on the size of the penetrant and free volume in the membranes.…”

Section: Transport Behaviormentioning

confidence: 84%

“…The sorption pattern remains same even at higher temperature. 36 Figure 4 shows that as the temperature increases, the S values also increase for all membranes. An increase in temperature increases the micro-Brownian moment, which enhances the distance between the polymer networks.…”

Section: Transport Behaviormentioning

confidence: 93%

“…[36][37][38] According to Fick's law of diffusion, solvent uptake occurs in the direction of concentration gradient and leads to generation of concentration FIGURE 8. Percentage mass uptake (Q t ) versus t 1/2 for all PU/GS membranes in octane during the resorption process.…”

Section: Diffusionmentioning

confidence: 99%

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Restricted Equilibrium Swelling of n‐Alkanes Posed by Ginger Spent Filled Polyurethane Green Composites during Sorption, Desorption, Resorption, and Redesorption Processes

Chethana¹,

Siddaramaiah²

2016

Adv Polym Technol

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Polyurethane (PU) based green composites with varying amounts of ginger spent (GS) have been fabricated and characterized for swelling and molecular transport behaviors in n-alkane probe molecules. Sorption-desorption-resorptionredesorption (S-D-RS-RD) behaviors have been performed to determine the true factor for transport coefficient. Sorption results are obtained by a gravimetric method and diffusion coefficient (D) has been calculated using Fick's equation for the linear data points of time-dependent sorption/resorption curves. The observation was made that diffusion coefficient follows Fick's rule. Sorption studies have been carried out at 25, 40, and 60°C. A significant increase in sorption values has been noticed with raise in temperature. Sorption (S) and diffusion (D) coefficients of n-alkanes depend on GS content in PU matrix. From the temperature dependence of diffusion and permeation (P) coefficients, the Arrhenius activation parameters have been used to estimate activation parameters such as diffusion (E D ) and permeation (E P ). Thermodynamic parameters such as enthalpy ( H) and entropy ( S) have been interpreted for sorption/resorption results. The percentage weight change for desoption and redesorption processes has been recorded; these results depend on the volatility of the penetrant molecules. C

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Synthesis of a novel nano-ceramic membrane for hydrogen separation and purification

Salimi

Pirouzfar

2017

J Aust Ceram Soc

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Chemical compatibility of PU/PAN interpenetrating polymer network membrane with substituted aromatic solvents

Cited by 4 publications

References 27 publications

Preparation, characterization and antifouling properties of polyacrylonitrile/polyurethane blend membranes for water purification

Preparation, characterization and antifouling properties of polyacrylonitrile/polyurethane blend membranes for water purification

Restricted Equilibrium Swelling of n‐Alkanes Posed by Ginger Spent Filled Polyurethane Green Composites during Sorption, Desorption, Resorption, and Redesorption Processes

Synthesis of a novel nano-ceramic membrane for hydrogen separation and purification

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