8 research outputs found
Functionalization of Graphene Oxide and its Composite with Poly(3,4-ethylenedioxythiophene) as Electrode Material for Supercapacitors
Kraft PulpâStarch Covalent Linking: A Promising Route to a New Material
International audienceWe reported herein, the synthesis process of a direct cross-linking of modified polysaccharides. azidated starch, and alkyne Kraft pulp were cross-linked in the presence of Cu(I) catalyst, a type of Huisgenâs 1,3-dipolar azideâalkyne cycloaddition reaction, leading to the formation of starch cross-linked to kraft pulp fiber. The modified polysaccharides were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and scanning electron microscopy (SEM), and their physical properties were tested. The results show that the obtained novel materialâs properties present an important enhancement compared to Kraft pulp fiber, about 71% and 44% for tear and break indexes respectively, up to 173% for elongation and of 136% for burst index