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Reactive blends of gelatinized starch and polycaprolactone‐ g ‐glycidyl methacrylate
Author(s) -
Kim ChangHyeon,
Cho Kuk Young,
Park JungKi
Publication year - 2001
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.1579
Subject(s) - glycidyl methacrylate , polycaprolactone , starch , materials science , methacrylate , benzoyl peroxide , polymer chemistry , elongation , chemical engineering , composite material , copolymer , chemistry , polymer , organic chemistry , monomer , ultimate tensile strength , engineering
Blends of the modified polycaprolactone (PCL) and the gelatinized starch with glycerin were prepared. The modified PCL, PCL‐ g ‐glycidyl methacrylate (GPCL), was synthesized by melt reaction of PCL and glycidyl methacrylate (GMA) in the presence of benzoyl peroxide (BPO) in a Brabender mixer. The size of the dispersed starch in the GPCL matrix was found to be smaller than that in the PCL matrix. As the relative content of the GMA groups in the GPCL increases, the elongation at break of the blend showed the highest value at a grafted GMA content of 4.2 wt %. With the increase of the glycerin content in the starch, an abrupt change of the mechanical properties of the blend were observed between 40 and 50 wt % glycerin content based on the starch weight. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 1507–1516, 2001