Synthesis and characterization of starch-poly(methyl acrylate) graft copolymers using horseradish peroxidase. (20th January 2016)

• Record Type: Journal Article
• Authors: Wang, Su; Wang, Qiang; Fan, Xuerong; Xu, Jin; Zhang, Ying; Yuan, Jiugang; Jin, Heling; Cavaco-Paulo, Artur
• Is Part Of: Carbohydrate polymers. Volume 136(2016)
• Page Start: 1010
• Page End: 1016
• Publication Date: 2016-01-20
• Subjects: Starch -- Horseradish peroxidase -- Methyl acrylate -- Graft polymerization; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2015.09.110
• Languages: English
• ISSNs: 0144-8617

Abstract

Highlights: The graft copolymer of starch with methyl acrylate was synthesized by using HRP. FT-IR, 1 H NMR and 13 C NMR confirmed that the target graft copolymers were formed. The grafting side chains have changed the crystalline state of gelatinized starch. Abstract: Horseradish peroxidase (HRP)-mediated graft polymerization in the presence of hydrogen peroxide (H2 O2 ) and acetylacetone (Acac) has been successfully applied to the synthesis of starch-poly(methyl acrylate) (PMA). The graft copolymer was characterized by Fourier transform infrared (FT-IR), elemental analysis, nuclear magnetic resonance ( 1 H NMR and 13 C NMR), and differential scanning calorimetry (DSC). FT-IR, elemental analysis and NMR confirmed that methyl acrylate (MA) was grafted onto starch successfully. DSC results showed the graft reaction had changed the crystalline regions of the gelatinized starch. The effects of pH, MA content, HRP dosage, incubation temperature and time on grafting percentage (GP) and grafting efficiency (GE) were also investigated. The GP and GE under optimal conditions reached 30.21% and 45.13%, respectively.