title: FTIR, XRD and DSC studies of nanochitosan, cellulose acetate and polyethylene glycol blend ultrafiltration membranes.
abstract: In the present work, a series of novel nanochitosan/cellulose acetate/polyethylene glycol (NCS/CA/PEG) blend flat sheet membranes were fabricated in different ratios (1:1:1, 1:1:2, 2:1:1, 2:1:2, 1:2:1, 2:2:1) in a polar solvent of N,N'-dimethylformamide (DMF) using the most popular phase inversion method. Nanochitosan was prepared by the ionotropic gelation method and its average particle size has been analyzed using Dynamic Light Scattering (DLS) method. The effect of blending of the three polymers was investigated using FTIR and XRD studies. FTIR results confirmed the formation of well-blended membranes and the XRD analysis revealed enhanced amorphous nature of the membrane ratio 2:1:2. DSC study was conducted to find out the thermal behavior of the blend membranes and the results clearly indicated good thermal stability and single glass transition temperature (Tg) of all the prepared membranes. Asymmetric nature and rough surface morphology was confirmed using SEM analysis. From the results it was evident that the blending of the polymers with higher concentration of nanochitosan can alter the nature of the resulting membranes to a greater extent and thus amorphous membranes were obtained with good miscibility and compatibility.
authors.affiliation: P.G. and Research Department of Chemistry, D.K.M. College for Women, Vellore, Tamil Nadu, India.
authors.forename: P Angelin
authors.initials: PA
authors.lastname: Vinodhini
authors.affiliation: P.G. and Research Department of Chemistry, D.K.M. College for Women, Vellore, Tamil Nadu, India.
authors.forename: Sangeetha
authors.initials: S
authors.lastname: K
authors.affiliation: P.G. and Research Department of Chemistry, D.K.M. College for Women, Vellore, Tamil Nadu, India.
authors.forename: Gomathi
authors.initials: G
authors.lastname: Thandapani
authors.affiliation: P.G. and Research Department of Chemistry, D.K.M. College for Women, Vellore, Tamil Nadu, India. Electronic address: drparsu8@gmail.com.
authors.forename: Sudha
authors.initials: S
authors.lastname: P N
authors.affiliation: Marine Bioprocess Research Center and Department of Marine-Bio Convergence Science, Pukyong National University, Busan, Republic of Korea.
authors.forename: Venkatesan
authors.initials: V
authors.lastname: Jayachandran
authors.affiliation: Division of Periodontics, Department of PDS, College of Dentistry, Prince Sattam Bin Abdulaziz University, Riyadh, Saudi Arabia.
authors.forename: Anil
authors.initials: A
authors.lastname: Sukumaran
mesh_terms: D002152:Calorimetry, Differential Scanning; D002482:Cellulose / Q000031:analogs & derivatives* / Q000737:chemistry; D048271:Chitosan / Q000737:chemistry*; D008567:Membranes, Artificial; D049329:Nanostructures / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D014462:Ultrafiltration; D014867:Water / Q000737:chemistry; D014961:X-Ray Diffraction
chemical_list: D008567:Membranes, Artificial; D014867:Water; C005062:acetylcellulose; D011092:Polyethylene Glycols; D002482:Cellulose; D048271:Chitosan
keywords: Cellulose acetate; Nanochitosan; Polyethylene glycol; Ultrafiltration membranes