Journal
CARBOHYDRATE POLYMERS
Volume 62, Issue 2, Pages 159-163Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2005.07.018
Keywords
poly(n-butyl acrylate) grafted starch; surface-initiated; atom transfer radical polymerization
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Poly(n-butyl acrylate) grafted starch (PBA-g-Starcb) were successfully by the surface-initiated atom transfer radical polymerization (SI-ATRP) of n-butyl acrylate (BA) using starch bromo-acefic ester as macroinitiator in presence of 1,10-phenanthroline and Cu(I)Br as catalyst in toluene system for the first time. The graft parameters calculated from the elemental analyses (EA) results, conversion of monomer (C%) and percentage of grafting (PG%) of 9.9 and 21.3% were achieved, respectively, after a polymerizing time of 5 h. The graft polymerizations exhibited the characteristics of a controlled/'living' polymerization. A glass transition temperature (Tg) of the PBA-g-Starch after a polymerizing time of 5 h was found at -48.6 degrees C by the differential scanning calorimetry (DSC) analysis. The product was also characterized by Fourier transform infrared (FTIR) and X-ray diffraction (XRD) techniques. (c) 2005 Elsevier Ltd. All rights reserved.
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