APS-initiated graft copolymerization of N-Vinyl pyrollidone onto gelatin: Preparation, characterization, and optimization of grafting parameters

Scientific Research and Essays

Mohammad Sadeghi¹ 

关键词:  ;    Gelatin;    N-vinyl pyrollidone;    graft copolymerization;     ;    ammonium persulfate.;   

DOI  :  10.5897/SRE11.1758

学科分类：社会科学、人文和艺术（综合）

来源: Academic Journals

【 摘 要 】

In this work, large numbers of hydrophilic functional groups were introduced onto gelatin by grafting withN-vinyl pyrollidone monomer.The graft copolymerization reactions were carried out under nitrogen atmosphere using ammonium persulfate (APS) as an initiator.The graft copolymer was characterized by Fourier transform infrared spectra, thermo-gravimetric analysis and solubility test. The existence of a sharp intense peak at 1653 cm-1in FTIR spectra of the graft copolymer, improvement of the thermal stability of gelatin-based copolymer and the solubility difference of the copolymer and the homopolymer prove the formation of graft copolymer. The effects of reaction variables, such as concentration of the initiator, monomer and gelatin, as well as, reaction temperature and time were investigated and the grafting conditions were optimized.The optimum reaction conditions resulting in maximum grafting ratio and add-on value have been determined.

【 授权许可】

CC BY