Premium
Solid state mechano‐chemical grafting copolymerization of hydroxyethyl cellulose with acrylic acid
Author(s) -
Chen Rong,
Yi Chuanbin,
Wu Hong,
Guo Shaoyun
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.30098
Subject(s) - copolymer , fourier transform infrared spectroscopy , grafting , hydroxyethyl cellulose , materials science , acrylic acid , polymer chemistry , titration , cellulose , solvent , chemical engineering , thermal stability , chemistry , polymer , organic chemistry , composite material , engineering
The effects of mechanochemical treatment on hydroxyethyl cellulose (HEC) and its grafting reaction with acrylic acid (AA) under solvent‐free conditions were studied through a vibratory ball‐milling machine, which was developed in our laboratory. Fourier transform infrared (FTIR) spectroscopy and 13 C‐NMR analysis were used to investigate the structural development of HEC during vibromilling and the grafting mechanism. Further development of the structure and properties of the graft copolymer was characterized by viscosity measurement, wide‐angle X‐ray diffraction (WAXD), and thermal gravity (TG) analysis. The FTIR results showed a new peak at 1720 cm −1 , corresponding to the CO absorbance peak of AA, which indicated that AA was successfully grafted onto HEC during the high‐energy vibromilling of the HEC/AA mixture at ambient temperature in the absence of a solvent and a catalyst. The WAXD showed the destruction of crystals of HEC during the milling, and the TG analysis demonstrated the improvement of the thermal stability of the copolymer. The effects of the processing conditions on the grafting rate and grafting efficiency were studied by chemical titration to determine the optimum grafting conditions. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009