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Chitosan‐based nanocomposite membranes with improved properties: Effect of cellulose acetate blending and TiO 2 nanoparticles incorporation
Author(s) -
Mafirad Sara,
Mehrnia Mohammad Reza,
Zahedi Payam,
Hosseini SeyedNezamedin
Publication year - 2018
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.24539
Subject(s) - materials science , nanocomposite , fourier transform infrared spectroscopy , differential scanning calorimetry , ultimate tensile strength , thermogravimetric analysis , membrane , cellulose acetate , chitosan , nanoparticle , contact angle , chemical engineering , nuclear chemistry , composite material , cellulose , nanotechnology , chemistry , biochemistry , physics , engineering , thermodynamics
The aim of this work was to synthesize nanocomposite membranes based on chitosan (CS) and cellulose acetate (CA) blends containing titanium dioxide (TiO 2 ) nanoparticles and investigate their morphological, structural, mechanical, and thermal properties along with dye affinity ligand content for using potentially as bioadsorption applications. The samples were characterized by means of scanning electronic microscopy (SEM), energy dispersive X‐ray (EDX), Fourier transform infrared spectroscopy (FTIR), tensile, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and water contact angle (WCA). The SEM micrograph images showed a uniform and microporous morphology of the prepared membranes. FTIR analysis confirmed the presence of CA and TiO 2 nanoparticles through the CS matrix in which the components used had good compatibility. The mechanical and thermal studies emphasized that strong interactions occurred between CS, CA, and TiO 2 nanoparticles. Blending CS with CA and the addition of TiO 2 nanoparticles enhanced the hydrophilic property of CS membranes, significantly. The CS/CA based nanocomposite containing 1.5 wt% of TiO 2 nanoparticles showed the remarkable improvements in ultimate tensile strength values and an increase in stiffness more than three times compared to the neat CS membrane sample. Finally, considering the results of tensile test and immobilized Cibacron Blue F3G‐A (CB) content measurement, the nanocomposite samples denoted by (50/50) CS/CA/TiO 2 (1.5%) were nominated as the promising material used for potentially bioadsorptive membrane. POLYM. COMPOS., 39:4452–4466, 2018. © 2017 Society of Plastics Engineers