2021
DOI: 10.1002/pat.5221
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Synthesis of post‐modified poly(ester‐amino) microspheres via aza‐Michael precipitation polymerization and its use for enzyme immobilization

Abstract: Uniform poly(ester‐amino) microspheres (PEAs) were prepared by catalyst‐free aza‐Michael addition precipitation polymerization of trihydroxymethylpropyl triacrylate (TMPTA) and piperazine (PA) in acetonitrile. The effects of monomer feed ratio and concentration, polymerization temperature, and time on the size and morphology of PEAs were investigated. Monodisperse PEAs with size about 4 μm were successfully obtained at 2/3 molar ratio of TMPTA/PA and 4°C. The chemical structure of PEAs was characterized. There… Show more

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