Preparation and properties of pullulan–alginate–carboxymethylcellulose blend films

Tong, Qunyi; Xiao, Qian; Lim, Loong‐Tak

doi:10.1016/j.foodres.2008.08.005

Cited by 220 publications

(100 citation statements)

References 44 publications

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“…Similar values of the tensile strength reported in this study were observed for ODF's made with pullulan, sodium alginate and CMC blends [26] . Gelatin:alginate oral strips, produced for controlled drugs release, presented values of maximum tensile strength and elongation when the blend of gelatin and alginate was 50% [7] .…”

Section: Mechanical Propertiessupporting

confidence: 89%

Characterization of low cost orally disintegrating film (ODF)

et al. 2017

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Section: Mechanical Propertiessupporting

confidence: 89%

Characterization of low cost orally disintegrating film (ODF)

et al. 2017

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“…The same shifts were also observed in pullulan-silica bionanocomposites . Shifting of bands specifically assigned to -OH groups are generally associated with the establishment of new hydrogen bonds between phases (MFC and pullulan, in this case) (Tong et al 2008). Therefore, it is likely interaction between MFC and pullulan in the nanocomposite films was governed by hydrogen bonding.…”

Section: Infrared Spectroscopymentioning

confidence: 85%

Microfibrillated cellulose (MFC): pullulan bionanocomposite films

et al. 2014

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The aim of this work was to develop and characterize microfibrillated cellulose (MFC)/pullulan bionanocomposites. Fourier transform infrared spectroscopy suggested that the affinity between the two polymers resulted in new hydrogen bonding of the nanocomposite materials compared to pristine pullulan. At the same time, an increase in crystallinity was observed proportional to the amount of MFC used, as shown by the X-ray analyses. Accordingly, final films showed improved mechanical properties proportionally to the filler loading, with impressive elastic modulus and tensile strength of *4.50 GPa and *60 MPa, respectively, for the sample containing 10 % MFC. However, as demonstrated by the moisture sorption isotherms, the addition of MFC did not help reduce the amount of water adsorbed by the samples. In addition, the oxygen and water vapor permeability data clearly showed that final films still suffered high relative humidity values, whereas their barrier performance toward oxygen was excellent under dry conditions, with O 2 permeability coefficients (P 0 O 2 ) comparable with those of common high barrier films/ coatings. Finally, while the nanocomposites in the form of films had high haze values (from 23 to 40 %), the same nanocomposites in the form of coatings were decidedly more transparent, which suggests that their use as thin layers could be more suitable when the ''seethrough'' capability must be preserved, for example in food packaging applications.

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“…Films from three polysaccharides were obtained by Tong, Xiao and Lim (2008), who blended pullulan with alginate and carboxymethylcellulose. Wang et al (2007) obtained films from blends of two polysaccharides (glucomannan and sodium alginate) and a protein (collagen).…”

Section: Film Formationmentioning

confidence: 99%

“…Nevertheless, in films obtained with ternary blends containing low methylcellulose ratio, significant improvements in the mechanical properties were observed (F9). The use of three polysaccharides altogether, instead of two, in film production was also favorable for Tong, Xiao and Lim (2008). According to these authors, adding concentrations higher than 50% of sodium alginate or carboximethylcellulose (CMC) to pullulan significantly jeopardized the mechanical performance of the resulting binary films.…”

Section: Polysaccharide and Gelatin Filmsmentioning

confidence: 99%

Mechanical and water vapor permeability properties of biodegradables films based on methylcellulose, glucomannan, pectin and gelatin

Chambi¹,

Grosso²

2011

Ciênc. Tecnol. Aliment.

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Mechanical and water vapor permeability properties of biodegradables films based on methylcellulose, glucomannan, pectin and gelatin Propriedades mecânicas e de permeabilidade ao vapor de água de filmes biodegradáveis à base de metilcelulose, glucomanana, pectina e gelatinaHulda Noemi Mamani CHAMBI 1 *, Carlos Raimundo Ferreira GROSSO 1 IntroductionInterest in edible films is connected with the development of easily degradable packaging, non-aggressive to the environment (CHEN, 1995;KOELSCH, 1994). Natural polymers such as proteins and polysaccharides, offer great opportunities, since their biodegradability and environmental compatibility are assured (KROCHTA; DE MULDER-JOHNSON, 1997). However, films produced with these materials have low water vapor barrier property and low mechanical resistance in comparison with films produced from synthetic polymers.Several studies have been carried out to improve film performance such as the cross-linking of the polymeric chains (CARVALHO; GROSSO, 2004;HERNÁNDEZ-MUÑOZ;VILLALOBOS;CHIRALT, 2004;CHAMBI;GROSSO, 2006), the addition of hydrophobic compounds (TANADA-PALMU; GROSSO, 2002;BERTAN et al., 2005) and blended polysaccharides and/or proteins (XIAO et al., 2001a,b;CIEŚLA;SALMIERI;LACROIX, 2006;WANG et al., 2007).Another alternative to obtain films with good performance would be through mimic biological structures such as the cell wall composed of a three-dimensional network of cellulose, pectin, hemicelluloses (xylan, mannans, xyloglucans) and structural proteins (CHANLIAUD et al., 2002;KERSTIENS, 1996). This network should be able to bear high-strain strength allowing reversible deformation, in reply to the osmotic pressure caused by the cell turgescence (CHANLIAUD et al., 2002).Cellulose, the most abundant organic polymer in the world, is a linear homopolymer constituted by glucose molecules linked by highly polar and hydrophilic glycosidic bonds β (1-4); however, it is insoluble in water (JUNQUEIRA, 1997). In order to provide solubility, cellulose is esterified ResumoMimetizar estruturas biológicas como a parede celular dos tecidos vegetais pode ser uma alternativa para obter filmes biodegradáveis com propriedades mecânicas e de barreira ao vapor de água melhoradas. O objetivo do presente trabalho foi avaliar as propriedades mecânicas e de permeabilidade ao vapor de água (PVA) de filmes produzidos pelo método de evaporação do solvente (casting) a partir de misturas de metilcelulose, glucomanana, pectina e gelatina. Inicialmente, foram produzidos filmes a partir dos polissacarídeos em pH 4. O filme com melhor desempenho mecânico (tensão na ruptura = 72,64 MPa; elongação = 9,85%) foi obtido a partir de metilcelulose-glucomanana-pectina na proporção 1:4:1, respectivamente. Posteriormente, adicionou-se gelatina a esta mistura de polissacarídeos, e o pH foi ajustado para 4, 5 e 6. Os resultados mostraram melhoras significativas na PVA quando os filmes foram produzidos em pH 5 e com as proporções polissacarídeos/gelatina de 90/10 e 10/90, atingindo-se valores de 0,094 e 0,118 ...

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Preparation and properties of pullulan–alginate–carboxymethylcellulose blend films

Cited by 220 publications

References 44 publications

Characterization of low cost orally disintegrating film (ODF)

Characterization of low cost orally disintegrating film (ODF)

Microfibrillated cellulose (MFC): pullulan bionanocomposite films

Mechanical and water vapor permeability properties of biodegradables films based on methylcellulose, glucomannan, pectin and gelatin

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