Poly(2-hydroxyethyl methacrylate) hydrogels doped with copper nanoparticles
Source abstract
Abstract
Poly(2-hydroxyethyl methacrylate) hydrogels incorporating copper nanoparticles (Cu-PHEMA) were prepared by a two-step process. In the first step, porous PHEMA hydrogels containing aqueous Cu(II) were formed by photo-induced phase separation polymerization in aqueous formulations containing 2-hydroxyethyl methacrylate (HEMA), a photoinitator, a cross-linker, and CuSO. In the second step, the Cu(II) ions were reduced to Cu(0) (Cu NPs) by hydrazine. The Cu-PHEMA hydrogels were red-brown due to the presence of the Cu NPs, and X-ray diffraction studies confirmed the NPs were crystalline Cu and not CuO. The porous PHEMA and Cu-PHEMA hydrogels exhibited the polymer droplet morphology characteristic of sponges formed by induced phase separation polymerization of HEMA in water. The Cu NPs were stable inside the hydrogel, and leaching of Cu NPs into water was very slow. Leached Cu NPs moderately inhibited the growth of Escherichia coli or Staphylococcus aureus bacteria in the surrounding medium. Incorporation of Cu NPs inside PHEMA hydrogels did not change compression strength of hydrogels.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Transdermal Drug Delivery · Pickering emulsions and particle stabilization · Advanced Polymer Synthesis and Characterization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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