Starch Grafted with Polyacrylic Acid as a Renewable Alternative for Fossil-Based Performance Polymers †

Inge Willem Noordergraaf*, Judy R. Witono, Hero J. Heeres

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)
18 Downloads (Pure)

Abstract

Graft copolymerization of acrylic acid onto starch can provide renewable alternatives for current applications of water-soluble performance polymers from fossil resources. In our laboratory, Fenton’s reagent was mostly used as the initiator for graft copolymerization experiments, in aqueous solutions. A major challenge with the homogeneous system is the selectivity of grafting versus homopolymer formation. Important factors that determine the grafting selectivity are discussed, and methods to improve it are proposed. In a batch process, adding monomer in portions over time proved successful. This provides a principal breakthrough of the trade-off between grafting percentage and graft selectivity that is characteristic for grafting with hydrophilic monomers.

Original languageEnglish
Article number203
Number of pages6
JournalEngineering Proceedings
Volume56
Issue number1
DOIs
Publication statusPublished - 26-Oct-2023

Keywords

  • methods to improve selectivity with water-soluble monomers and indirect initiation
  • selectivity of the grafting reaction
  • starch graft copolymerization
  • water solubility of the monomer as a key factor

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