A facile route to prepare cellulose-based films

Xu, Qin; Chen, Chen; Rosswurm, Katelyn; Yao, Tianming; Janaswamy, Srinivas

doi:10.1016/j.carbpol.2016.04.114

Cited by 179 publications

(75 citation statements)

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“…Specifically, there are 10 electrons on the 3d electronic orbit of Zn 2+ , and by an sp3 hybridized effect, the 4s and 4p electronic orbits can form four sp3 hybrid orbits. In Zn 2+ solutions, each sp3 hybrid orbit of Zn 2+ can accept one pair of electrons on the oxygen atom of H2O to generate a [Zn(H2O)4] 2+ complex (Lu & Shen, 2011;Xu, Chen, Rosswurm, Yao, & Janaswamy, 2016). Since this complex still has two positive charges in its outermost shell, it still has two 4d activated electronic orbits, which can accept one or two isolated charges on the oxygen atoms of starch hydroxyls and leading to an octahedral geometry (Fischer, Leipner, Thümmler, Brendler, & Peters, 2003;Leipner, Fischer, Brendler, & Voigt, 2000).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Starch–zinc complex and its reinforcement effect on starch-based materials

Liu

Shang

et al. 2019

Carbohydrate Polymers

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Section: Accepted Manuscriptmentioning

confidence: 99%

Starch–zinc complex and its reinforcement effect on starch-based materials

Liu

Shang

et al. 2019

Carbohydrate Polymers

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“…Cellulose is the most abundant renewable and biodegradable material found in nature [5]. However, it has limited application because it is insoluble in water as well as in common organic and inorganic solvents.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Sodium Carboxymethyl Cellulose/Sodium Alginate/Chitosan Composite Film

2018

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A sodium alginate/chitosan solution was prepared by dissolving sodium alginate, chitosan, and glycerol in an acetic acid solution. This solution was then combined with a sodium carboxymethyl cellulose solution and the mixture was cast onto a glass plate and dried at a constant temperature of 60 • C. Then, a carboxymethyl cellulose/sodium alginate/chitosan composite film was obtained by immersing the film in a solution of a cross-linking agent, CaCl 2 , and air-drying the resulting material. First, the most advantageous contents of the three precursors in the casting solution were determined by a completely random design test method. Thereafter, a comprehensive orthogonal experimental design was applied to select the optimal mass ratio of the three precursors. The composite film obtained with sodium alginate, sodium carboxymethyl cellulose, and chitosan contents of 1.5%, 0.5%, and 1.5%, respectively, in the casting solution displayed excellent tensile strength, water vapor transmission rate, and elongation after fracture. Moreover, the presence of chitosan successfully inhibited the growth and reproduction of microorganisms. The composite film exhibited antibacterial rates of 95.7% ± 5.4% and 93.4% ± 4.7% against Escherichia coli and Staphylococcus aureus, respectively. Therefore, the composite film is promising for antibacterial food packaging applications.

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“…Note that, despite the possibility of using cellophane as a membrane material in the dialysis and gas separation processes [2], cellophane does not exhibit high efficiency, structural homogeneity, and required strength. The search for new possibilities of using cellulose as a membrane material has made it possible to synthesize new cellulose membranes in the form of both flat films (Lyophane) [3] and hollow fibers from solutions in N-methylmorpholine-N-oxide [4] and others solvents [5][6][7]. The authors of [8] used a cellulose cuoxam solution to synthesize cellulose hydrate-based hemodialysis membranes (synthesized films are known as Cuprophane); however, in this case, the production is characterized by the penetration of copper salts into wastewater.…”

Section: Introductionmentioning

confidence: 99%

Cellulose-Based Composite Gas Separation Membranes

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Teplyakov

Filistovich

et al. 2019

Membr. Membr. Technol.

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A "green" method to synthesize new composite membranes from a cellulose solution in phosphoric acid on various ultrafiltration substrates is proposed. The method can be used in industry; it differs from the conventional viscose method for producing cellophane and other known methods for synthesizing cellulose-based gas separation membranes by the absence of gaseous emissions and wastewater. The structure of the synthesized samples is studied by electron microscopy, X-ray diffraction, and thermal analysis (DSC). Analysis of the mechanical properties of the samples shows that the new membranes have better mechanical characteristics than those of homogeneous pure cellulose films synthesized in this study and commercial cellophane films. The gas transport properties of new membranes with respect to O 2 , N 2 , CO 2 , CH 4 , and He are studied. It is found that the proposed membrane synthesis method provides the formation of uniform dense gas separation layers of cellulose; the membranes show a three orders of magnitude higher gas permeability than that of cellophane films. It is shown that the highest ideal selectivity is exhibited by membranes with a gas separation layer of cellulose on viscose fabric substrates.

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A facile route to prepare cellulose-based films

Cited by 179 publications

References 50 publications

Starch–zinc complex and its reinforcement effect on starch-based materials

Starch–zinc complex and its reinforcement effect on starch-based materials

Preparation and Properties of Sodium Carboxymethyl Cellulose/Sodium Alginate/Chitosan Composite Film

Cellulose-Based Composite Gas Separation Membranes

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