The Experts below are selected from a list of 2937 Experts worldwide ranked by ideXlab platform
J M Kenny - One of the best experts on this subject based on the ideXlab platform.
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a novel method to prepare conductive Nanocrystalline Cellulose graphene oxide composite films
Materials Letters, 2013Co-Authors: L Valentini, Marta Cardinali, Elena Fortunati, Luigi Torre, J M KennyAbstract:Abstract In this study Nanocrystalline Cellulose (CNC)/graphene oxide (GO) composite films were prepared by drop casting water dispersion of GO in the presence of CNC and their nanostructures, surface and electrical properties were investigated. It was found that pristine hydrophilic GO presents a good dispersion when mixed with CNC along with a decrease of the composite electrical resistivity. The surface properties of the composite film indicated a poorer wettability with respect to that measured for separated materials. By applying an electric current through the CNC/GO composite a transition from an electrically insulating material to a conductive one was observed along with an improved wettability. The obtained results open an easy route for paper electronic based on the integration of Nanocrystalline Cellulose onto graphene devices.
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A novel method to prepare conductive Nanocrystalline Cellulose/graphene oxide composite films
Materials Letters, 2013Co-Authors: L Valentini, Marta Cardinali, Elena Fortunati, Luigi Torre, J M KennyAbstract:Abstract In this study Nanocrystalline Cellulose (CNC)/graphene oxide (GO) composite films were prepared by drop casting water dispersion of GO in the presence of CNC and their nanostructures, surface and electrical properties were investigated. It was found that pristine hydrophilic GO presents a good dispersion when mixed with CNC along with a decrease of the composite electrical resistivity. The surface properties of the composite film indicated a poorer wettability with respect to that measured for separated materials. By applying an electric current through the CNC/GO composite a transition from an electrically insulating material to a conductive one was observed along with an improved wettability. The obtained results open an easy route for paper electronic based on the integration of Nanocrystalline Cellulose onto graphene devices.
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Microstructure and nonisothermal cold crystallization of PLA composites based on silver nanoparticles and Nanocrystalline Cellulose
Polymer Degradation and Stability, 2012Co-Authors: Elena Fortunati, Qi Zhou, Ilaria Armentano, Debora Puglia, Andrea Terenzi, Lars Berglund, J M KennyAbstract:Poly(lactic acid) (PIA) based high performance nanocomposites, were prepared using an innovative combination of Nanocrystalline Cellulose and silver nanoparticles. Binary and ternary systems were p ...
Lars Nordstierna - One of the best experts on this subject based on the ideXlab platform.
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cp mas c 13 nmr study of pulp hornification using Nanocrystalline Cellulose as a model system
Carbohydrate Polymers, 2013Co-Authors: Alexander Idström, Harald Brelid, Magnus Nyden, Lars NordstiernaAbstract:The hornification process of paper pulp was investigated using solid-state C-13 NMR spectroscopy. Nanocrystalline Cellulose was used to serve as a model system of the crystalline parts of the fibrils in pulp fibers. Characterization of the Nanocrystalline Cellulose dimensions was carried out using scanning electron microscopy. The samples were treated by drying and wetting cycles prior to NMR analysis where the hornification phenomenon was recorded by spectral changes of the Cellulose C-4 carbon signals. An increase of the crystalline signal and a decrease of the signals corresponding to the accessible amorphous domains were found for both paper pulp and Nanocrystalline Cellulose. These spectral changes grew stronger with repeating drying and wetting cycles. The results show that Cellulose co-crystallization contribute to hornification. Another conclusion is that the surfaces of higher hydrophobicity in Cellulose fibrils have an increased preference for aggregation.
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CP/MAS 13C NMR study of pulp hornification using Nanocrystalline Cellulose as a model system
Carbohydrate polymers, 2012Co-Authors: Alexander Idström, Harald Brelid, Magnus Nyden, Lars NordstiernaAbstract:The hornification process of paper pulp was investigated using solid-state C-13 NMR spectroscopy. Nanocrystalline Cellulose was used to serve as a model system of the crystalline parts of the fibrils in pulp fibers. Characterization of the Nanocrystalline Cellulose dimensions was carried out using scanning electron microscopy. The samples were treated by drying and wetting cycles prior to NMR analysis where the hornification phenomenon was recorded by spectral changes of the Cellulose C-4 carbon signals. An increase of the crystalline signal and a decrease of the signals corresponding to the accessible amorphous domains were found for both paper pulp and Nanocrystalline Cellulose. These spectral changes grew stronger with repeating drying and wetting cycles. The results show that Cellulose co-crystallization contribute to hornification. Another conclusion is that the surfaces of higher hydrophobicity in Cellulose fibrils have an increased preference for aggregation.
Alexander Idström - One of the best experts on this subject based on the ideXlab platform.
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cp mas c 13 nmr study of pulp hornification using Nanocrystalline Cellulose as a model system
Carbohydrate Polymers, 2013Co-Authors: Alexander Idström, Harald Brelid, Magnus Nyden, Lars NordstiernaAbstract:The hornification process of paper pulp was investigated using solid-state C-13 NMR spectroscopy. Nanocrystalline Cellulose was used to serve as a model system of the crystalline parts of the fibrils in pulp fibers. Characterization of the Nanocrystalline Cellulose dimensions was carried out using scanning electron microscopy. The samples were treated by drying and wetting cycles prior to NMR analysis where the hornification phenomenon was recorded by spectral changes of the Cellulose C-4 carbon signals. An increase of the crystalline signal and a decrease of the signals corresponding to the accessible amorphous domains were found for both paper pulp and Nanocrystalline Cellulose. These spectral changes grew stronger with repeating drying and wetting cycles. The results show that Cellulose co-crystallization contribute to hornification. Another conclusion is that the surfaces of higher hydrophobicity in Cellulose fibrils have an increased preference for aggregation.
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CP/MAS 13C NMR study of pulp hornification using Nanocrystalline Cellulose as a model system
Carbohydrate polymers, 2012Co-Authors: Alexander Idström, Harald Brelid, Magnus Nyden, Lars NordstiernaAbstract:The hornification process of paper pulp was investigated using solid-state C-13 NMR spectroscopy. Nanocrystalline Cellulose was used to serve as a model system of the crystalline parts of the fibrils in pulp fibers. Characterization of the Nanocrystalline Cellulose dimensions was carried out using scanning electron microscopy. The samples were treated by drying and wetting cycles prior to NMR analysis where the hornification phenomenon was recorded by spectral changes of the Cellulose C-4 carbon signals. An increase of the crystalline signal and a decrease of the signals corresponding to the accessible amorphous domains were found for both paper pulp and Nanocrystalline Cellulose. These spectral changes grew stronger with repeating drying and wetting cycles. The results show that Cellulose co-crystallization contribute to hornification. Another conclusion is that the surfaces of higher hydrophobicity in Cellulose fibrils have an increased preference for aggregation.
Elena Fortunati - One of the best experts on this subject based on the ideXlab platform.
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a novel method to prepare conductive Nanocrystalline Cellulose graphene oxide composite films
Materials Letters, 2013Co-Authors: L Valentini, Marta Cardinali, Elena Fortunati, Luigi Torre, J M KennyAbstract:Abstract In this study Nanocrystalline Cellulose (CNC)/graphene oxide (GO) composite films were prepared by drop casting water dispersion of GO in the presence of CNC and their nanostructures, surface and electrical properties were investigated. It was found that pristine hydrophilic GO presents a good dispersion when mixed with CNC along with a decrease of the composite electrical resistivity. The surface properties of the composite film indicated a poorer wettability with respect to that measured for separated materials. By applying an electric current through the CNC/GO composite a transition from an electrically insulating material to a conductive one was observed along with an improved wettability. The obtained results open an easy route for paper electronic based on the integration of Nanocrystalline Cellulose onto graphene devices.
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A novel method to prepare conductive Nanocrystalline Cellulose/graphene oxide composite films
Materials Letters, 2013Co-Authors: L Valentini, Marta Cardinali, Elena Fortunati, Luigi Torre, J M KennyAbstract:Abstract In this study Nanocrystalline Cellulose (CNC)/graphene oxide (GO) composite films were prepared by drop casting water dispersion of GO in the presence of CNC and their nanostructures, surface and electrical properties were investigated. It was found that pristine hydrophilic GO presents a good dispersion when mixed with CNC along with a decrease of the composite electrical resistivity. The surface properties of the composite film indicated a poorer wettability with respect to that measured for separated materials. By applying an electric current through the CNC/GO composite a transition from an electrically insulating material to a conductive one was observed along with an improved wettability. The obtained results open an easy route for paper electronic based on the integration of Nanocrystalline Cellulose onto graphene devices.
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Microstructure and nonisothermal cold crystallization of PLA composites based on silver nanoparticles and Nanocrystalline Cellulose
Polymer Degradation and Stability, 2012Co-Authors: Elena Fortunati, Qi Zhou, Ilaria Armentano, Debora Puglia, Andrea Terenzi, Lars Berglund, J M KennyAbstract:Poly(lactic acid) (PIA) based high performance nanocomposites, were prepared using an innovative combination of Nanocrystalline Cellulose and silver nanoparticles. Binary and ternary systems were p ...
Anatoly G. Zakharov - One of the best experts on this subject based on the ideXlab platform.
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Template synthesis of mesoporous silicas with the use of Nanocrystalline Cellulose
Colloid Journal, 2017Co-Authors: M. I. Voronova, D. A. Isaeva, Oleg V. Surov, A. S. Kraev, I. S. Mityukhina, Anatoly G. ZakharovAbstract:The porous structure of silica samples prepared via sol–gel synthesis with the use of Nanocrystalline Cellulose particles as a template has been studied by low-temperature nitrogen adsorption. The influence of the concentration of a Nanocrystalline Cellulose dispersion, template content in the Nanocrystalline Cellulose/SiO2 composite, and the conditions of the sol–gel synthesis on the porous structure of silica has been investigated.
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Thermal stability of composites of polyvinyl alcohol with Nanocrystalline Cellulose in its acid and neutralized forms
Composites Communications, 2016Co-Authors: M. I. Voronova, Oleg V. Surov, Sabir S. Guseinov, Anatoly G. ZakharovAbstract:Abstract Thermal stability of polyvinyl alcohol/Cellulose nanocrystals composites has been studied. It has been shown that Nanocrystalline Cellulose in its acid form considerably enhances the thermal stability of the composites, while the neutral form of the Nanocrystalline Cellulose has little effect on the thermal stability of the composites.
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Nanocrystalline Cellulose with various contents of sulfate groups.
Carbohydrate polymers, 2013Co-Authors: M. I. Voronova, Oleg V. Surov, Anatoly G. ZakharovAbstract:Properties of films derived from aqueous Nanocrystalline Cellulose dispersions by water evaporation depend on concentration of sulfate groups. Namely type of thermodestruction and surface morphology change as a function of contents of sulfate groups. Surface roughness increases and water adsorption enhances with increasing sulfate groups content particularly at high relative pressure.
