FTIR, XRD and DSC studies of nanochitosan, cellulose acetate and polyethylene glycol blend ultrafiltration membranes

Vinodhini, P. Angelin; Sangeetha, K.; Gomathi, T.; Sudha, P.N.; Venkatesan, Jayachandran; Anil, Sukumaran

doi:10.1016/j.ijbiomac.2017.03.122

Cited by 108 publications

(35 citation statements)

References 35 publications

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“…Several methods are proposed to improve the separation performance and longevity of the polymeric membranes for oil-water separation. These methods are surface modification [26,27], blending another hydrophilic polymer [28][29][30], and embedding nanoparticles in the polymeric matrix. Mixed-matrix membranes or polymer-inorganic membranes are fabricated by adding nanoparticle additives into the polymer matrix [31].…”

Section: Introductionmentioning

confidence: 99%

Modifying Cellulose Acetate Mixed-Matrix Membranes for Improved Oil–Water Separation: Comparison between Sodium and Organo-Montmorillonite as Particle Additives

et al. 2021

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In this study, cellulose acetate (CA) mixed-matrix membranes were fabricated through the wet-phase inversion method. Two types of montmorillonite (MMT) nanoclay were embedded separately: sodium montmorillonite (Na-MMT) and organo-montmorillonite (O-MMT). Na-MMT was converted to O-MMT through ion exchange reaction using cationic surfactant (dialkyldimethyl ammonium chloride, DDAC). Attenuated total reflectance-Fourier transform infrared (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) compared the chemical structure and composition of the membranes. Embedding either Na-MMT and O-MMT did not change the crystallinity of the CA membrane, indicating that the nanoclays were dispersed in the CA matrix. Furthermore, nanoclays improved the membrane hydrophilicity. Compared with CANa-MMT membrane, CAO-MMT membrane had a higher separation efficiency and antifouling property. At the optimum concentration of O-MMT in the CA matrix, the pure water flux reaches up to 524.63 ± 48.96 L∙m−2∙h−1∙bar−1 with over 95% rejection for different oil-in-water emulsion (diesel, hexane, dodecane, and food-oil). Furthermore, the modified membrane delivered an excellent antifouling property.

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Section: Introductionmentioning

confidence: 99%

Modifying Cellulose Acetate Mixed-Matrix Membranes for Improved Oil–Water Separation: Comparison between Sodium and Organo-Montmorillonite as Particle Additives

et al. 2021

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“…Figure 1a displayed FTIR of chitosan and nanochitosan, it showed a distinct shift of OH and NH to a lower wave number from 3437 cm −1 for chitosan to 3415 cm −1 for nanochitosan with large broadening indicating the physical interaction with TPP. Peaks of C=O of amide (chitin part) at 1640 cm −1 and C-O at 1150 cm −1 were obtained [53]. For nanochitosan a distinct peaks were appeared at 1080 and 1210 cm −1 for P-O and P=O streating, respectively.…”

Section: Characterization Of the Synthesized Nanochitosanmentioning

confidence: 89%

Novel Composite Films Based on Acrylic Fibers Waste/Nano-chitosan for Congo Red Adsorption

Selim¹,

Meligi

Abdelhamid

et al. 2022

J Polym Environ

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The current research aimed to use waste to treat waste; to recycling of acrylic fibers waste combined with nano-chitosan for use as an adsorbent to remove Congo red (CR) from wastewater. Acrylic fibers (AF) waste were mixed with nano-chitosan (NCh) with different ratios and converted into films by using phase inversion method to prepare two nanocomposites films coded, AF-NCh and AF-NCh-Epichlorohydrin. The nanocomposites films have been characterized using; Fourier transform infrared, scanning electron microscope, surface area, and thermal analysis. The results revealed successful incorporation of NCh into AF matrix with highly porous structure. Different parameters affecting adsorption efficiency such as, CR concentrations, adsorbent dose, effect of time and pH were employed. Adsorption isotherms and kinetic studies evaluations were applied to assess the adsorption mechanism and rate. Results declared that, the maximum adsorption capacities of AF-NCh and AF-NCh-Epichlorohydrin were 169 and 230 mg/g respectively. The adsorption isotherm and kinetic mechanism obey Langmuir and pseudo second order models. Regeneration of the synthesized composite films were studied for five cycles and showed relative stable reading with high efficiency. Graphical Abstract

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“…displayed FTIR of chitosan and nanochitosan, it showed a distinct shift of OH and NH to alower wave number from 3437 cm -1 for chitosan to 3415 cm -1 for nanochitosan with large brodining indicating the pyscial ineraction with TPP. Peaks of C=O of amide (chitin part) at 1640 cm -1 and C-O at 1150 cm -1 were obtained [45]. For nanochitosan adistnict peaks were appeared at 1080 and 1210 cm -1 for P-O and P=O streating, respectively.…”

Section: Figure 1amentioning

confidence: 89%

Novel Composite Films Based on Acrylic Fibers Waste / Nano-Chitosan for Congo red Adsorption

Selim¹,

Meligi

Abdelhamid

et al. 2021

Preprint

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Dyes are a form of pollutant that has been dumped into water sources by a variety of industries, causing environmental and human health problems. As a result, the current research focuses on recycling acrylic fibers waste combined with nano-chitosan for use as an adsorbent to remove Congo red (CR) from wastewater. Acrylic ﬁbers (AF) waste were mixed with nano-chitosan (NCh) with different ratios and converted into films by using phase inversion method to prepare two nanocomposites films coded, AF-NCh and AF-NCh-Epichlorohydrin. The nanocomposites films have been characterized using; Fourier transform infrared, scanning electron microscope, surface area, and thermal analysis. The results revealed successful incorporation of NCh into AF matrix with highly porous structure. Adsorption studies were carried out to get the optimum condition for CR remediation process. Different parameters were employed such as, CR concentrations, adsorbent dose, effect of time and pH. Langmuir, Freundlich isotherms and kinetic studies evaluations were applied. Results declared that, the maximum adsorption capacities of AF-NCh and AF-NCh-Epichlorohydrin were 166.6 and 232.5 mg/g respectively. The adsorption isotherm and kinetic mechanism obey Langmuir and pseudo second order models. Regeneration of the synthesized composite films were studied for five cycles and showed relative stable reading with high efficiency.

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FTIR, XRD and DSC studies of nanochitosan, cellulose acetate and polyethylene glycol blend ultrafiltration membranes

Cited by 108 publications

References 35 publications

Modifying Cellulose Acetate Mixed-Matrix Membranes for Improved Oil–Water Separation: Comparison between Sodium and Organo-Montmorillonite as Particle Additives

Modifying Cellulose Acetate Mixed-Matrix Membranes for Improved Oil–Water Separation: Comparison between Sodium and Organo-Montmorillonite as Particle Additives

Novel Composite Films Based on Acrylic Fibers Waste/Nano-chitosan for Congo Red Adsorption

Novel Composite Films Based on Acrylic Fibers Waste / Nano-Chitosan for Congo red Adsorption

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