Title of article :
Surface grafting of microfibrillated cellulose with poly(ε-caprolactone) – Synthesis and characterization
Author/Authors :
Hanna L?nnberg، نويسنده , , Linda Fogelstr?m، نويسنده , , My Ahmed Said Azizi Samir، نويسنده , , Lars Berglund، نويسنده , , Eva Malmstr?m، نويسنده , , Anders Hult، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Pages :
7
From page :
2991
To page :
2997
Abstract :
In cellulose nanocomposites, the surface of the nanocellulosic phase is critical with respect to nanocellulose dispersion, network formation and nanocomposite properties. Microfibrillated cellulose (MFC) has been grafted with poly(ε-caprolactone) (PCL), via ring-opening polymerization (ROP). This changes the surface characteristics of MFC and makes it possible to obtain a stable dispersion of MFC in a nonpolar solvent; it also improves MFC’s compatibility with PCL. The thermal behavior of MFC grafted with different amount of PCL has been investigated using thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). From TGA measurements, the fraction of PCL in MFC-PCL samples was estimated to 16%, 19%, and 21%. The crystallization and melting behavior of free PCL and MFC-PCL were studied with DSC, and a significant difference was observed regarding melting points, crystallization temperature, degree of crystallinity, as well as the time required for crystallization.
Keywords :
ring-opening polymerization , Thermal gravimetric analysis , Differential scanning calorimetry , dispersion , Microfibrillated cellulose , Grafting of poly(?-caprolactone)
Journal title :
European Polymer Journal(EPJ)
Serial Year :
2008
Journal title :
European Polymer Journal(EPJ)
Record number :
1227805
Link To Document :
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