title: Chemical modification of cellulose acetate by N-(phenyl amino) maleimides: characterization and properties.
abstract: Cellulose acetate (CA) was modified using N-(phenyl amino) maleimides (R-APhM) where, RH or 4-NO2. The structure of the modified polymer was characterized by (13)C-NMR. The chemical modification is based on the reaction between the acetyl group of the glucopyranose ring in cellulose acetate and the proton of the amino group in N-(phenyl amino) maleimide molecule. The thermal gravimetry (TGA) was used to investigate the thermal stability of the modified polymeric samples. The modified cellulose acetate by 4-nitro (phenyl amino) maleimide (CA/4-NO2APhM) exhibits the highest thermal stability as compared to the N-(phenyl amino) maleimide (CA/APhM) and the unmodified CA. The crystallinity and morphology of the modified polymeric samples were investigated using X-ray diffraction (XRD) and emission scanning electron microscope (ESEM), respectively. The presence of N-(phenyl amino) maleimide moieties in the cellulose acetate matrix improved its mechanical property. Also, the organic nature of (R-APhM) moieties inside CA matrix reduced its wettability.
authors.affiliation: Chemistry department, Faculty of science, Fayium University, Fayium 63111, Egypt. Electronic address: abirabdelnaby@hotmail.com.
authors.forename: Abir S
authors.initials: AS
authors.lastname: Abdel-Naby
authors.affiliation: Chemistry department, Faculty of science, Dammam University, Dammam, Saudi Arabia.
authors.forename: Azza A
authors.initials: AA
authors.lastname: Al-Ghamdi
mesh_terms: D066241:Carbon-13 Magnetic Resonance Spectroscopy; D002482:Cellulose / Q000031:analogs & derivatives* / Q000737:chemistry; D003460:Crystallization; D006860:Hydrogen Bonding; D008301:Maleimides / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D013818:Thermogravimetry; D017155:Wettability; D014961:X-Ray Diffraction
chemical_list: D008301:Maleimides; C043592:maleimide; C005062:acetylcellulose; D002482:Cellulose
keywords: Cellulose acetate; Morphology; N-(phenyl amino) maleimide; Thermal properties