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Related Concept Videos

Anionic Chain-Growth Polymerization: Overview01:20

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The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
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Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
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Preparation of Polypentafluorophenyl acrylate Functionalized SiO2 Beads for Protein Purification
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Adsorbed Water Structure on Acrylate-Based Biocompatible Polymer Surface.

Saptarsi Mondal1,2, Jooyoun Kang1,2, Kwanghee Park1,2

  • 1Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science (IBS), 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea.

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Area of Science:

  • Polymer Science
  • Biomaterials
  • Surface Chemistry

Background:

  • Acrylate-based polymers are crucial for antibiofouling coatings due to their biocompatibility.
  • The interaction between water and these polymers significantly influences their performance.

Purpose of the Study:

  • To investigate the role of water in the biocompatibility of poly(2-methoxyethyl) acrylate (PMEA) and poly(2-phenoxyethyl) acrylate (PPEA).
  • To elucidate the relationship between polymer-water interactions, surface morphology, and biocompatibility.

Main Methods:

  • Femtosecond mid-infrared pump-probe spectroscopy to analyze water species.
  • IR-pump visible-probe photothermal imaging to assess polymer-water spatial overlap and surface morphology.

Main Results:

  • Two distinct water species with different vibrational lifetimes were identified on both PMEA and PPEA.
  • PMEA exhibits stronger water interaction via carbonyl (C═O) hydrogen bonding compared to PPEA.
  • The vibrational lifetime of water on PPEA is significantly longer than on PMEA and bulk water.
  • Hydrated PMEA shows greater spatial overlap between polymer carbonyl groups and water, and distinct surface morphology compared to PPEA.

Conclusions:

  • Stronger polymer-water interaction, particularly H-bonding, enhances biocompatibility.
  • Surface morphology is intrinsically linked to polymer-water interactions and overall biocompatibility.
  • These findings provide insights into designing advanced biocompatible materials for antibiofouling applications.