Preparation and Characterization of Hybrid Chitosan/Acrylic Resin Emulsions and Their Films

Abstract

Summary: Solutions containing chitosan of different molecular weights and several acidic monomers were prepared under various aging conditions. Hybrid chitosan/acrylic resin emulsions were prepared from these solutions by emulsion polymerization. The viscosities of the hybrid chitosan/acrylic resin emulsions were influenced significantly by the molecular weight of chitosan, the acidic monomer used, and the aging conditions. DSC and FT‐IR spectroscopy of the hybrid chitosan/acrylic resin films indicated that chitosan was well distributed in the films. The water absorption and formaldehyde adsorption abilities of the acrylic resin films prepared with chitosan were higher than the corresponding films prepared without chitosan, and they increased with increasing molecular weight of the chitosan. The morphology of these films, studied by TEM, revealed that the distribution of chitosan in the hybrid chitosan/acrylic resin emulsion was dependent on the molecular weight of chitosan, the acidic monomer used, and the aging conditions.

Preparation and Characterization of Hybrid Quaternized Chitosan/Acrylic Resin Emulsions and their Films

“…In our previous paper,7 we reported on the properties of hybrid chitosan/acrylic resin emulsions prepared using chitosan‐acidic monomer solution. In this work, to incorporate a q ‐chitosan into acrylic resin films, two types of acrylic resin emulsion were prepared, one with and one without a keto group.…”

“…Consequently, the use of chitosan has been reported in a variety of fields 8–19. Furthermore, we demonstrated that hybridized chitosan/acrylic resin films have excellent adsorption ability for formaldehyde 6,7…”

“…The content of chitosan and q ‐chitosan in this emulsion was expected to be about 5 wt.‐%, if all AA, MMA, and 2EHA monomers were polymerized. Emulsion polymerizations were carried out by a pre‐emulsion dropping method as reported in our previous papers 6,7…”

“…Especially, for an interior finishing coating material, reducing volatile organic compounds (VOCs) is of particular interest due to their adverse effects on health, safety, and the environment. In our previous papers,1–7 we have reported an interior coating material prepared from hybridized chitosan/acrylic resin emulsion using chitosan, which is an N ‐deacetylated product of chitin, as an environmentally friendly material. Chitosan offers many advantages over other synthetic polymers because of its biocompatibility, biodegradability, antimicrobial and physiological functions, and non‐toxicity.…”

“…In this study, two q ‐chitosan composite acrylic resin emulsions were prepared by emulsion polymerization. One is a based on a conventional acrylic resin emulsion as discussed in our previous papers 2–7. Another acrylic resin emulsion with a keto group was obtained by copolymerization with diacetone acrylamide (DAAM).…”