Process Biochemistry
Process Biochemistry
5 years ago

Preparation and rheological properties of starch-g-poly(butyl acrylate) catalyzed by horseradish peroxidase

Preparation and rheological properties of starch-g-poly(butyl acrylate) catalyzed by horseradish peroxidase
A “green” method for the preparation of starch-g-poly(butyl acrylate) (starch-g-PBA) copolymers using a biocatalyst, horseradish peroxidase (HRP), in the presence of hydrogen peroxide (H2O2) and acetylacetone (Acac) was developed. The chemical structures and thermal properties of the grafted starch were analyzed by Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance spectroscopy (1H NMR), elemental analysis, differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). FT-IR, elemental analysis, and 1H NMR confirmed that PBA was successfully grafted onto starch by HRP-mediated graft copolymerization. DSC and TGA results showed that the grafting of PBA chains improved the thermal stability of starch. The effects of grafting on the rheological properties of the starch pastes were also studied. Compared to control starch, the grafted starch paste had higher viscosity and showed better elastic behavior. The effects of gelatinization and addition of ethanol on the graft copolymerization were also investigated. The results indicated that gelatinization and addition of ethanol improved the grafting percentage (GP, 5.66%) and grafting efficiency (GE, 19.39%).

Publisher URL: www.sciencedirect.com/science

DOI: S1359511317300879

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.