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Synthesis and Characterization of Novel Hydrophobically End‐Capped Poly(ethylene oxide)s [PEOs]
Author(s) -
Badiger M. V.,
Kadam V. S.,
Lele A. K.,
Wadgaonkar P. P.,
Hourdet D.
Publication year - 2006
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200650902
Subject(s) - gallic acid , ethylene oxide , chemistry , polymer , polymer chemistry , oxide , pulmonary surfactant , end group , ethylene glycol , tannin , organic chemistry , copolymer , antioxidant , biochemistry , food science
We report on the synthesis and characterization of a novel hydrophobically modified end‐capped poly(ethylene oxide)s. The end‐capping agent of this polymer was designed and synthesised from a renewable resource material namely, gallic acid (i.e. 3,4,5‐trihydroxybenzoic acid), the byproduct of tannin industry. The hydroxyl groups at 3, 4 and 5 positions of gallic acid provide an opportunity for varying the hydrophobicity of the compound. The hydrophobic end‐capping compound, 3,4,5‐tridodecyloxy bezoylazide was prepared from gallic acid and PEGs with different chain lengths (of number average molecular weights, 10000 and 35000 g/mol) were end‐capped using 3,4,5‐tridodecyloxybenzoyl azide. The quantitative analysis of end‐capping in the polymers was demonstrated by 1 H‐NMR spectroscopy and the rheological studies were carried out in the surfactant solutions.