Microcrystalline Cellulose Stabilizedemulsions

Oza, Kamlesh P.; Frank, Sylvan G.

doi:10.1080/01932698608943478

Cited by 110 publications

(65 citation statements)

References 2 publications

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“…Several recent publications demonstrate how MFC can be utilized for various purposes, e.g. in nanocomposites (Nakagaito and Yano 2005;Bruce et al 2005;Malainine et al 2005;López-Rubio et al 2007), as dispersion stabilizers (Oza and Frank 1986;Ougiya et al 1997;Khopade and Jain 1990;Andresen and Stenius 2007), and as antimicrobial films ). However, little has been reported about the use of MFC in paper applications or the properties of pure MFC films.…”

Section: Introductionmentioning

confidence: 99%

Strength and barrier properties of MFC films

Syverud

Stenius²

2008

Cellulose

524

377

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The preparation of microfibrillar cellulose (MFC) films by filtration on a polyamide filter cloth, in a dynamic sheet former and as a surface layer on base paper is described. Experimental evidence of the high tensile strength, density and elongation of films formed by MFC is given. Typically, a MFC film with basis weight 35 g/m 2 had tensile index 146 ± 18 Nm/g and elongation 8.6 ± 1.6%. The E modulus (17.5 ± 1.0 GPa) of a film composed of randomly oriented fibrils was comparable to values for cellulose fibres with a fibril angle of 50°. The strength of the films formed in the dynamic sheet former was comparable to the strength of the MFC films prepared by filtration. The use of MFC as surface layer (0-8% of total basis weight) on base paper increased the strength of the paper sheets significantly and reduced their air permeability dramatically. FEG-SEM images indicated that the MFC layer reduced sheet porosity, i.e. the dense structure formed by the fibrils resulted in superior barrier properties. Oxygen transmission rates (OTR) as low as 17 ml m -2 day -1 were obtained for films prepared from pure MFC. This result fulfils the requirements for oxygen transmission rate in modified atmosphere packaging.

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Section: Introductionmentioning

confidence: 99%

Strength and barrier properties of MFC films

Syverud

Stenius²

2008

Cellulose

524

377

View full text Add to dashboard Cite

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“…Several recent publications demonstrate how MFC can be used for various purposes, e.g., in nanocomposites (Bruce et al 2005;Dufresne et al 2000;Dufresne 2006Dufresne , 2008Malainine et al 2005;Nakagaito and Yano 2005;Lopez-Rubio et al 2007), as dispersion stabilizers (Oza and Frank 1986;Khopade and Jain 1990;Ougiya et al 1997;Andresen and Stenius 2007) or antimicrobial films (Andresen et al 2006). Syverud and Stenius (2009) used MFC films as oxygen barrier and obtained an oxygen transmission rate (OTR) as low as 17 mL/m 2 day with a 30 lm thick films prepared from pure MFC.…”

Section: Introductionmentioning

confidence: 98%

Efficient approach to high barrier packaging using microfibrillar cellulose and shellac

Iotti²,

2010

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This paper presents an investigation on the enhancement of the barrier properties of paperboard and paper. Microfibrillar cellulose (MFC) and shellac were deposited on the fibre based substrates using a bar coater or a spray coating technique. The air, oxygen and water vapour permeability properties were measured to quantify the barrier effect of the applied coatings. In addition, the mechanical properties were determined and image analysis of the structure was performed to examine the coating adhesion. The air permeance of the paperboard and papers was substantially decreased with a multilayer coating of MFC and shellac. Furthermore, for the MFC and shellac coated papers, the oxygen transmission rate decreased several logarithmic units and the water vapour transmission rate reached values considered as high barrier in food packaging (6.5 g/m 2 24 h). The analysis of mechanical and morphological properties indicated good adhesion between the coating and the base substrate.

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“…Hence, these films have been proposed as suitable for packaging applications, where barrier and strength properties are important (Syverud and Stenius 2009). Cellulose is also well known for its hydrophilic nature which makes the cellulose nanofibrils suitable for use as stabilizers of oil-in-water emulsions (Oza and Frank 1986;Ougiya et al 1997). The use of nanofibrils in nanocomposites is an area of research that has attracted an increasing interest in recent years due to their high stiffness and strength.…”

Section: Introductionmentioning

confidence: 99%

Reduction of water wettability of nanofibrillated cellulose by adsorption of cationic surfactants

et al. 2010

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Adsorption isotherms of single and double chain cationic surfactants with different chain length (cetyltrimethyl-, didodecyl-and dihexadecyl ammonium bromide) onto cellulose nanofibrils were determined. Nanofibrillated cellulose, also known as microfibrillated cellulose (MFC), with varying contents of carboxyl groups (different surface charge) was prepared by TEMPO-mediated oxidation followed by mechanical fibrillation. The fibril charge was characterized by potentiometric and conductometric titration. Surfactant adsorption was verified by Fourier Transform Infrared Spectroscopy (FTIR) and X-ray Photoelectron Spectroscopy (XPS). Wetting and adhesion of water onto fibril films was determined by contact angle measurements. Small aggregates (admicelles) of surfactant were shown to form on the nanofibril surfaces, well below critical micelle concentrations. The results demonstrate the possibility of using cationic surfactants to systematically control the degree of water wettability of cellulose nanofibrils.

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Microcrystalline Cellulose Stabilizedemulsions

Cited by 110 publications

References 2 publications

Strength and barrier properties of MFC films

Strength and barrier properties of MFC films

Efficient approach to high barrier packaging using microfibrillar cellulose and shellac

Reduction of water wettability of nanofibrillated cellulose by adsorption of cationic surfactants

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