Multivariate curve resolution analysis on the multi-component water sorption process into a poly(2-methoxyethyl acrylate) film

Akiko Tanabe, Shigeaki Morita, Masaru Tanaka, Yukihiro Ozaki

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

In our previous study, sorption process of water into a biocompatible polymer film, poly(2-methoxyethyl acrylate) (PMEA) was monitored by time-resolved in situ attenuated total reflection infrared (ATR-IR) spectroscopy [S. Morita, et al., Langmuir 23, 3750 (2007)]. In the present study, noisy and heavily overlapped O-H stretching vibrational bands of diffusing water have been analyzed from the series spectra where the spectral shapes change irregularly with time. In spite of these complications, a powerful spectral analysis technique, multivariate curve resolution (MCR) by means of alternating least squares (ALS), yielded smooth and meaningful pure component spectra and detailed kinetic sorption profiles of each component, excluding noise. Ordinary smoothing techniques and Gaussian curve fitting would not achieve these significant results. The quantification of the kinetic parameters such as amplitudes (a) and relaxation time constants (τ) is significant for the systematic development of biocompatible materials and also for revealing the mechanisms of biocompatibility of a material. Moreover, the ratios of coefficients of each component at saturation corresponded well to the values obtained by Tanaka et al. measured by gravimetric analysis. This study is the first to report the detailed concentration profile of each water component whose sorption kinetics is discussed comprehensively.

Original languageEnglish
Pages (from-to)46-50
Number of pages5
JournalApplied Spectroscopy
Volume62
Issue number1
DOIs
Publication statusPublished - Jan 1 2008
Externally publishedYes

Fingerprint

acrylates
sorption
Sorption
Water
curves
water
kinetics
Kinetics
Gravimetric analysis
Curve fitting
Biocompatible Materials
Biocompatibility
Kinetic parameters
Polymer films
Biomaterials
Relaxation time
Spectrum analysis
Stretching
Infrared spectroscopy
curve fitting

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Spectroscopy

Cite this

Multivariate curve resolution analysis on the multi-component water sorption process into a poly(2-methoxyethyl acrylate) film. / Tanabe, Akiko; Morita, Shigeaki; Tanaka, Masaru; Ozaki, Yukihiro.

In: Applied Spectroscopy, Vol. 62, No. 1, 01.01.2008, p. 46-50.

Research output: Contribution to journalArticle

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