Sorption behaviour of interpenetrating polymer networks based on polyurethane and unsaturated polyester

Ajithkumar, S.; Patel, Nimish; Kansara, Sujata

doi:10.1016/s0966-7822(98)00006-9

Cited by 14 publications

(10 citation statements)

References 21 publications

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“…(3)]32 derived from equation of transport phenomena [eq. (2)]26 where Q t and Q ∞ are the mole percent uptake of solvent at time “ t ” and at infinity or equilibrium. “ k ” is a constant, which depends upon both on the interaction between solvent and polymer and on the structure of polymer.…”

Section: Resultsmentioning

confidence: 99%

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Swelling kinetics of linseed oil‐based nanocomposites

Sharma

Banait

Kundu

2009

J of Applied Polymer Sci

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The solvent-resistance properties of the montmorillonite-filled conjugated linseed oil-based nanocomposites are studied in tetrahydrofuran through equilibrium swelling method at different temperatures. The values of "n" in solvent transport equation are found to be below "0.5," showing the non-Fickian diffusion in the polymer. The dependence of the diffusion coefficient on the composition, percentage of clay, and temperature has been studied for nanocomposite samples. The diffusion coefficient increases with an increase in the clay contents and temperature. The crosslink density of the nanocomposites ranges from 101.07 to 237.46 Â 10 6 mol/cm 3 .

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Section: Resultsmentioning

confidence: 99%

“…The mole percent uptake ( Q t ) at each time interval is calculated by using eq. (1) 26 where M t is the mass of solvent taken up at time t, M r is the relative molar mass of the solvent and M i is the mass of the dry sample.…”

Section: Methodsmentioning

confidence: 99%

Swelling kinetics of linseed oil‐based nanocomposites

Sharma

Banait

Kundu

2009

J of Applied Polymer Sci

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“…Water absorption studies of composites in water at room temperature were carried out as per ASTM D 570. Water absorption properties such as mole percentage water uptake (

Q_{normalt}

), diffusion coefficient ( D ), sorption coefficient ( S ), and permeability coefficient ( P ) of composites were determined by following the procedure reported in literatures .…”

Section: Experimental Methodsmentioning

confidence: 99%

Mechanical and water absorption properties of municipal solid waste and banana fiber‐reinforced urea formaldehyde composites

Aseer

Sankaranarayanasamy

Jayabalan

et al. 2014

Env Prog and Sustain Energy

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In this study, hybrid composites of municipal solid waste (MSW)/banana fiber reinforced urea formaldehyde were prepared in different filler ratio. Mechanical properties such as tensile, flexural, and impact strengths were investigated as a function of total volume fraction (Vf) of filler (MSW and banana fiber), relative volume fraction of MSW and banana fiber and its chemical modification. The mechanical properties were found to be high at 40% Vf of filler which indicates effective stress transfer between fiber and matrix. Then, composites with different volume ratios of MSW and banana fiber (100:0, 75:25, 50:50, 25:75, 0:100) are prepared by keeping total Vf of filler as 40%. It is observed that addition of banana fiber imparts better mechanical and thermal stability properties to composites. Also, banana fiber addition increased the water absorption properties of composites. © 2014 American Institute of Chemical Engineers Environ Prog, 34: 211–221, 2015

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“…The mole percent uptake ( Q t ) at each time interval is calculated by using eq. (1) 23 where M e is the mass of the solvent taken up at equilibrium, M r is the relative molecular mass of the solvent, and M i is the mass of the dry sample.…”

Section: Methodsmentioning

confidence: 99%

Swelling kinetics of linseed oil‐based polymers

Sharma

Banait

Kundu

2008

J of Applied Polymer Sci

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Kinetics of swelling and sorption behavior of copolymers (based on linseed oil, styrene, divinylbenzene, and acrylic acid via cationic and thermal polymerization) is studied in tetrahydrofuran (THF) at different temperatures. The values of n in the transport equation are found to be below 0.4, showing non-Fickian or pseudo-Fickian transport in the polymers. The dependence of diffusion coefficient on the composition and temperature has also been studied for the linseed oilbased polymers. The diffusion coefficient in cationic samples decreases with an increase in the oil contents in the samples. In case of thermal samples, the diffusion coefficient first increases up to 30% oil contents and then decreases. The diffusion coefficient decreases with an increase in temperature for all of the linseed oil polymer samples. The sorption coefficient increases with an increase in the oil contents for all samples. The crosslink density (calculated from the THF swelling) ranges from 20.16 to 92.34 Â 10 6 mol/cm 3 for cationic samples and 20.62 to 86.01 Â 10 6 mol/cm 3 for thermal samples.

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Sorption behaviour of interpenetrating polymer networks based on polyurethane and unsaturated polyester

Cited by 14 publications

References 21 publications

Swelling kinetics of linseed oil‐based nanocomposites

Swelling kinetics of linseed oil‐based nanocomposites

Mechanical and water absorption properties of municipal solid waste and banana fiber‐reinforced urea formaldehyde composites

Swelling kinetics of linseed oil‐based polymers

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