Premium
A Spectrophotometric Study of Hydrogen Bonding in Methylcellulose‐based Edible Films Plasticized by Polyethylene Glycol
Author(s) -
Turhan K.N.,
Sahbaz F.,
Güner A.
Publication year - 2001
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.2001.tb15581.x
Subject(s) - hydrogen bond , polyethylene glycol , fourier transform infrared spectroscopy , molecule , polymer , peg ratio , intermolecular force , matrix (chemical analysis) , hydrogen , materials science , chemistry , infrared spectroscopy , polymer chemistry , analytical chemistry (journal) , chemical engineering , organic chemistry , composite material , finance , engineering , economics
With the use of Fourier Transform Infrared (FTIR) analysis applied to methylcellulose (MC) films, the hydrogen bonding formation between MC‐MC molecules and between MC and a series of different‐molecular‐weight PEGs was studied. The spectra of the films were interpreted in terms of the symmetry distortion of hydroxyl stretch at 3466.5 cm ‐1 , which is the measure of hydrogen bonding interactions in the polymer matrix. The symmetry distortion was determined to be affected by the MC concentration, indicating the presence of intra‐ and intermolecular hydrogen bonding between MC molecules. Neither ethanol nor its concentration influenced the symmetry distortion. A competition for hydrogen bonding via hydroxyl groups between MC‐MC and MC‐PEG occurred when PEG was incorporated into the polymer matrix.