ZL-DHP lignin model compound at the air-water interface

Miodrag Micic, Jhony Orbulescu, Ksenija Radotic, Milorad Jeremic, Guodong Sui, Yujun Zheng, Roger M. Leblanc

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

In this paper we present our surface chemistry studies of enzymatically polymerized, poly-coniferyl alcohol lignin model compound (dehydrogenate polymer a.k.a. ZL-DHP) at the air-water interface. Using the CHCl3/MeOH (5:1 v/v) spreading solvent, we found an average molecular area of ZL-DHP of approximately 1200 Å2. The monolayer expresses a high compressibility with a collapsed area of 500 Å2 and collapsed surface pressure of 28 mN m-1. In the range of applied surface pressures, ZL-DHP polymer have no phase changes, as shown by the very high linearity (R=0.994) of absorbance vs. surface pressure cure. There was no symmetry transitions observed as shown by absence of shifts of absorption peak maximums.

Original languageEnglish (US)
Article number3018
Pages (from-to)55-62
Number of pages8
JournalBiophysical Chemistry
Volume99
Issue number1
DOIs
StatePublished - Jan 1 2002

Keywords

  • Air-water interface
  • Cell wall
  • DHP
  • Langmuir film
  • Lignin model compound
  • Plant physiology
  • Polymer

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Biophysics

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    Micic, M., Orbulescu, J., Radotic, K., Jeremic, M., Sui, G., Zheng, Y., & Leblanc, R. M. (2002). ZL-DHP lignin model compound at the air-water interface. Biophysical Chemistry, 99(1), 55-62. [3018]. https://doi.org/10.1016/S0301-4622(02)00121-7