Cellulose acetate–silica fume membrane: characterization and application for separation of starch and maltose

Rusli, Handajaya; Gandasasmita, Suryo; Amran, Muhammad Bachri

doi:10.1007/s13726-013-0132-8

Cited by 14 publications

(9 citation statements)

References 14 publications

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“…The wide peak at 3,400 cm −1 represents the hydroxyl group (OH). [40,41] The mentioned important peaks of the silica nanoparticles have been appeared clearly in the CA/silica nanocomposite membranes. It would prove the presence of the silica nanoparticles in the hybrid membranes.…”

Section: Structural Characterization Of Nanocomposite Membranesmentioning

confidence: 96%

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Gas permeation properties of cellulose acetate/silica nanocomposite membrane

et al. 2017

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In this study, the effects of silica nanoparticles on the permeability of pure CO 2 , O 2, and N 2 gases in cellulose acetate (CA) membrane have been studied. Silica particles were prepared via the sol-gel method through the hydrolysis of tetraethyl orthosilicate (TEOS). CA and CA/silica nanocomposite membranes were prepared by thermal phase inversion method. Scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and Fourier transfer infrared (FTIR) analyses were employed to characterize the CA and CA/silica nanocomposite membranes. Gas permeation experiments showed an increase in the permeability of CO 2 from 6.32 to 7.3 barrer and a reduction in the permeability of N 2 from 0.18 to 0.09 barrer with the increment in silica content of the prepared composite membranes up to 20 wt%. Therefore, CO 2 /N 2 selectivity of the nanocomposite membranes increased by increasing the silica content in the polymer matrix from 30 to 80 for 20 wt% load of silica. K E Y W O R D Scellulose acetate, gas permeation, membrane, nanocomposite, silica How to cite this article: Najafi M, Sadeghi M, Bolverdi A, Pourafshari Chenar M, Pakizeh M. Gas permeation properties of cellulose acetate/silica nanocomposite membrane.

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Section: Structural Characterization Of Nanocomposite Membranesmentioning

confidence: 96%

“…[40,41] The mentioned important peaks of the silica nanoparticles have been appeared clearly in the CA/silica nanocomposite membranes. The peak appeared at 793 cm −1 shows the Si-O-Si symmetric stretching (vibrational mode of ring stretching) which corroborates that solgel reaction has been successfully carried out.…”

Section: Gas Permeation Testsmentioning

confidence: 99%

Gas permeation properties of cellulose acetate/silica nanocomposite membrane

et al. 2017

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“…Therefore, replacing synthetic polymers by natural ones is a new strategy for preparing biocompatible products to overcome many socioeconomic and recycling problems. Cellulose, as an important structural component of primary cell wall plants and many form of algae and bacteria, remain the most common eco‐friendly raw material, biodegradable, low cost biopolymer with large abundance on earth . However, the full potential of cellulose has not yet been exploited since its solubility in the common organic solvent is limited and chemical modifications are required.…”

Section: Introductionmentioning

confidence: 99%

Ag‐nanocomposite based on carboxymethylcellulose for humidity detection: Green synthesis and sensing performances

Marzouk

Sakly

Roudesli

et al. 2016

J of Applied Polymer Sci

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A novel highly sensitive Ag-nanocomposite for humidity detection has been successfully prepared. Initially, cellulose isolated from Tunisian palm date petiole was converted to carboxymethyl cellulose (CMC) as biomatrix under heterogeneous conditions. The synthesized product was thoroughly characterized by means of FT-IR spectroscopy, viscosity analysis, and high performance size exclusion chromatography multiangle laser light scattering. CMC was used as reducing and stabilizing agent to prepare CMCstabilized silver nanoparticles via a rapid green method. The bioreduction of silver ions under different experimental conditions, including Ag 1 concentration and pH, was investigated. Optimal experimental conditions provided a long-term stable colloidal suspension and well-dispersed spherical shape Ag NPs with a size ranging from 13 to 28 nm. Ag-nanocomposite coated quartz microbalance crystal was used as sensitive layer for humidity detection. A comparative study showed that the immobilized metallic nanostructures greatly reduced changes in visco-elastic properties, increased surface area as well as surface local charge density of the CMC. Consequently, sensor performances were greatly enhanced: better stability even at higher relative humidity (RH), good reproducibility and linearity (11-98% RH), low hysteresis characteristics, and rapid response and recovery times (14 and 6 s, respectively) were obtained.

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“…Cellulose, the most abundant and renewable polysaccharide on earth, has been wildly used in the chemical and biological industries for its safe, biocompatible, hydrophilic and biodegradable natures [16][17][18]. It is noted that cellulose also has a neutral inherent taste as well as a regulatory effect on digestion.…”

Section: Introductionmentioning

confidence: 99%

An investigation of flavor encapsulation comprising of regenerated cellulose as core and carboxymethyl cellulose as wall

Tan

Dai

et al. 2013

Iran Polym J

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The potential application of flavor encapsulation comprising regenerated porous cellulose particles (RPC) as core and carboxymethyl cellulose (CMC) as wall was investigated using L-menthol as a model flavor. RPC was prepared by sol-gel transition method and characterized by Fourier-transform infrared (FTIR) spectra, scanning electron microscopy (SEM) and micromeritics instruments. The results revealed that the RPC showed the particle size about 300-500 lm as well as the specific surface area about 8.7 m 2 /g. Based on high adsorptive capability, RPC could encapsulate menthol well and offer high encapsulation yield. The menthol content of RPC-menthol complexes (RPCM) was measured by gas chromatogram (GC) and showed the maximum content of about 12 % menthol with the encapsulation efficiency of 70 %. Besides, RPC provided comparable flavor retention as microcrystalline cellulose during storage under relative humidity of 80 % at 25°C. CMC was then used to modify RPCM and the construction of RPCM-CMC was confirmed by FTIR and SEM. The studies showed that CMC wall on RPCM surface had no influence on the menthol content and encapsulation efficiency in encapsulation process, but provided a significant increase in menthol retention during storage depending on the content of CMC in RPCM-CMC. Moreover, the stability test at various temperatures showed that both RPCM and RPCM-CMC were stable at room temperature and released flavor at temperatures common in food processing. It was concluded that RPC and CMC modification shows great potential as flavor encapsulant.

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Cellulose acetate–silica fume membrane: characterization and application for separation of starch and maltose

Cited by 14 publications

References 14 publications

Gas permeation properties of cellulose acetate/silica nanocomposite membrane

Gas permeation properties of cellulose acetate/silica nanocomposite membrane

Ag‐nanocomposite based on carboxymethylcellulose for humidity detection: Green synthesis and sensing performances

An investigation of flavor encapsulation comprising of regenerated cellulose as core and carboxymethyl cellulose as wall

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