Experimental Studies and Modelling of Sorption and Diffusion of Water and Alcohols in Cellulose Acetate

Praly, Laurent; Nguyen, Quang Trong; Sacco, D.; Lochon, Pierre

doi:10.1002/(sici)1097-0126(199701)42:1<9::aid-pi637>3.0.co;2-a

Cited by 34 publications

(40 citation statements)

References 6 publications

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“…Barrie [16] notes that the theory is useful for describing water sorption behaviour in hydrophobic polymers. Perrin et al [17] showed that the water sorption isotherm in hydrophilic cellulose acetate can be well described by the Flory-Huggins theory for activities less than 0.7. According to the Flory-Huggins theory, the relation between activity of water vapour, a w , and its volume fraction in the polymer, w is given as follows [19].…”

Section: Modeling Of Equilibrium Isothermmentioning

confidence: 58%

“…The Flory-Huggins thermodynamic theory is used for correlating the water sorption isotherms [16][17][18]. Barrie [16] notes that the theory is useful for describing water sorption behaviour in hydrophobic polymers.…”

Section: Modeling Of Equilibrium Isothermmentioning

confidence: 99%

“…The deviation from the Flory-Huggins thermodynamic theory especially at high penetrant activities lead to another approach derived by Perrin et al [17]. This model called the ENSIC model takes into account both penetrant-polymer and penetrant-penetrant interactions by introducing a second parameter, k s for mutual penetrant interactions.…”

Section: Modeling Of Equilibrium Isothermmentioning

confidence: 99%

“…Water is a unique penetrant due to its polar nature, thus, it can hydrogen bond with itself and can form clusters. Zimm and Lundberg describe a mathematical approach to determine the extent of clustering based on a cluster integral, G ww , which can be calculated from the equilibrium sorption isotherm as follows [17]:…”

Section: Modeling Of Equilibrium Isothermmentioning

confidence: 99%

See 3 more Smart Citations

The influence of binder content on the water transport properties of waterborne acrylic paints

Altınkaya

Topçuoğlu

Yürekli

et al. 2010

Progress in Organic Coatings

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a b s t r a c tDiffusion coefficients and sorption isotherms of water in waterborne acrylic paint films and in the pure binder of the paints have been measured by gravimetric sorption. Solubility of water was found to enhance with the increased binder content in the paint films while the diffusivity of water decreased significantly. Sorption isotherms in the paint and pure copolymer films were correlated with the Flory Huggins theory and ENSIC model, respectively. Fickian diffusion was observed in both types of films and the kinetic data were best correlated with a numerical model which takes into account the concentration dependency of the diffusion coefficient and the dimensional change of the film due to sorption. It was concluded that the utilization of a simplified analytical solution may lead to significant errors in the estimation of diffusivities.

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Section: Modeling Of Equilibrium Isothermmentioning

confidence: 58%

Section: Modeling Of Equilibrium Isothermmentioning

confidence: 99%

Section: Modeling Of Equilibrium Isothermmentioning

confidence: 99%

Section: Modeling Of Equilibrium Isothermmentioning

confidence: 99%

See 2 more Smart Citations

The influence of binder content on the water transport properties of waterborne acrylic paints

Altınkaya

Topçuoğlu

Yürekli

et al. 2010

Progress in Organic Coatings

View full text Add to dashboard Cite

show abstract

“…As a fluorescent reagent and a polymer material, perylene and cellulose acetate (CA) were used, respectively. CA is widely used in various industrial fields such as for cigarette filters, clothing, water purification and medical applications 27,28 , and there are a number of studies reported on the sorption behavior of water and alcohols into CA [29][30][31] . Additives for dissolving penetrant perylene were glycerol triacetate (GTA), triethylene glycol diacetate (TEGDA), 1,3-butylene glycol diacetate (BGDA), paraffin liquid and polyethylene glycol 200 (PEG), in which GTA, TEGDA and BGDA are known as the plasticizers for CA 32,33 , and paraffin liquid and PEG for additives of CA filters in cigarette industrial field 34,35 .…”

Section: Introductionmentioning

confidence: 98%

Visualization of Sorption Dynamics: Application of Confocal Laser Scanning Microscope Technique

Hasegawa¹,

Matsumoto²,

Matsui³

2011

Laser Scanning, Theory and Applications

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Water transport properties in poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) biopolymers

Miguel

Iruin

1999

J. Appl. Polym. Sci.

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Water sorption and diffusion have been investigated in poly(3-hydroxybutyrate) (PHB) and three poly(3-hydroxybutyrate-co-3-hydroxyvalerate) copolymers [P(HB-HV)] by means of a Cahn electromicrobalance. Permeability of these samples have been determined using a gravimetric permeation cell. Two experimental setups were used for the gravimetric sorption measurements, under dynamic and static conditions, respectively. The differences observed in the results obtained using these techniques are discussed. The sorption measurements have evidenced the tendency of water molecules to form aggregates or clusters in the polymer. In addition, the static sorption method revealed the potential of PHB and P(HB-HV) to undergo molecular relaxations, eventually leading to a partial desorption of the previously sorbed water after an induction period. The clustering effect was adequately described by the polycondensation model. On the other hand, the interpretation of the diffusivity in terms of mobility coefficients has revealed a competition between a plasticization effect and clustering. As a whole, water transport properties in PHB and its copolymers can be considered to be very close in magnitude to those of common thermoplastics such as PVC and PET.

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Experimental Studies and Modelling of Sorption and Diffusion of Water and Alcohols in Cellulose Acetate

Cited by 34 publications

References 6 publications

The influence of binder content on the water transport properties of waterborne acrylic paints

The influence of binder content on the water transport properties of waterborne acrylic paints

Visualization of Sorption Dynamics: Application of Confocal Laser Scanning Microscope Technique

Water transport properties in poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) biopolymers

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