Open AccessFTIR INVESTIGATION ON CRYSTALLINITY OF HYDROXYPROPYL METHYL CELLULOSE-BASED POLYMERIC BLENDS
Author(s) -
MirelaFernanda Zaltariov,
AUTHOR_ID
Publication year - 2021
Publication title -
cellulose chemistry and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.302
H-Index - 32
eISSN - 2457-9459
pISSN - 0576-9787
DOI - 10.35812/cellulosechemtechnol.2021.55.84
Subject(s) - crystallinity , fourier transform infrared spectroscopy , chemistry , hydroxypropyl cellulose , cellulose , methyl cellulose , polyacrylic acid , attenuated total reflection , polymer chemistry , hydrogen bond , chemical engineering , infrared spectroscopy , nuclear chemistry , polymer , organic chemistry , molecule , crystallography , engineering
Two series of polymeric blends have been prepared based on hydroxypropyl methyl cellulose (HPMC)/polyacrylic acid (PAA) (1:1, 1:2, 1:3, 1:4) and HPMC/sodium alginate (SA) (1:30, 2:30, 3:30, 4:40) and investigated by Attenuated Total Reflectance–Fourier Transform Infrared Spectroscopy (ATR-FTIR). IR analysis confirmed the interaction between the polymeric components in the blend and the degree of structural organization. Crystallinity changes in the blends were observed as a function of a number of experimental parameters, such as temperature, composition and HPMC concentration, by determining the quantitative crystallinity indexes: Total Crystallinity Index (TCI), Lateral Order Index (LOI) and Hydrogen Bond Index (HBI).