Effect of sodium chloride on hydration structures of PMEA and P(MPC- R -BMA)

Shigeaki Morita, Masaru Tanaka

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The hydration structures of two different types of biomaterials, i.e., poly(2-methoxyethyl acrylate) (PMEA) and a random copolymer of 2-methacryloyloxyethyl phosphorylcholine and n-butyl methacrylate (P(MPC-r-BMA)), were investigated by means of attenuated total reflection infrared (ATR-IR) spectroscopy. The effects of the addition of sodium chloride to liquid water in contact with the surfaces of the polymer films were examined. The neutral polymer of PMEA was easily dehydrated by NaCl addition, whereas the zwitterionic polymer of P(MPC-r-BMA) was hardly dehydrated. More specifically, nonfreezing water having a strong interaction with the PMEA chain and freezing bound water having an intermediate interaction were hardly dehydrated by contacting with normal saline solution, whereas freezing water having a weak interaction with the PMEA chain was readily dehydrated. In contrast, freezing water in P(MPC-r-BMA) is exchanged for the saline solution contacting with the material surface without dehydration.

Original languageEnglish
Pages (from-to)10698-10703
Number of pages6
JournalLangmuir
Volume30
Issue number35
DOIs
Publication statusPublished - Sep 9 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Fingerprint Dive into the research topics of 'Effect of sodium chloride on hydration structures of PMEA and P(MPC- R -BMA)'. Together they form a unique fingerprint.

  • Cite this