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/cellulose Composite (cellulose + composite)
Selected AbstractsEffect of covalent bonds on the mechanical properties of a multi-walled carbon nanotube/cellulose compositePOLYMER INTERNATIONAL, Issue 8 2010Sungryul Yun Abstract A multi-walled carbon nanotube (MWCNT)/cellulose composite was synthesized to improve the mechanical strength of regenerated cellulose film. N,N -carbonyldiimidazole was mixed with functionalized MWCNTs and sonicated at 60 °C for 12 h. The resulting MWCNT-imidazolide was mixed with cellulose solution, and reacted at various temperatures for various times. The occurrence of covalent bonds between MWCNTs and cellulose was investigated using Fourier transform infrared spectroscopy and Raman spectroscopy. According to mechanical tensile tests, Young's modulus of the MWCNT/cellulose composite was found to be 11.2 GPa, an increase of approximately 110% with respect to regenerated cellulose film. Copyright © 2010 Society of Chemical Industry [source] Chitosan(chitin)/cellulose composite biosorbents prepared using ionic liquid for heavy metal ions adsorptionAICHE JOURNAL, Issue 8 2009Xiaoqi Sun Abstract Chitosan(chitin)/cellulose composites as biodegradable biosorbents were prepared under an environment-friendly preparation processes using ionic liquids. Infrared and X-ray photoelectron spectra indicated the stronger intermolecular hydrogen bond between chitosan and cellulose, and the hydroxyl and amine groups were believed to be the metal ion binding sites. Among the prepared biosorbents, freeze-dried composite had higher adsorption capacity and better stability. The capacity of adsorption was found to be Cu(II) (0.417 mmol/g) > Zn(II) (0.303 mmol/g) > Cr(VI) (0.251 mmol/g) > Ni(II) (0.225 mmol/g) > Pb(II) (0.127 mmol/g) at the same initial concentration 5 mmol L,1. In contrast to some other chitosan-type biosorbenrts, preparation and component of the biosorbent were obviously more environment friendly. Moreover, adsorption capacity of chitosan in the blending biosorbent could be fully shown. © 2009 American Institute of Chemical Engineers AIChE J, 2009 [source] Effect of covalent bonds on the mechanical properties of a multi-walled carbon nanotube/cellulose compositePOLYMER INTERNATIONAL, Issue 8 2010Sungryul Yun Abstract A multi-walled carbon nanotube (MWCNT)/cellulose composite was synthesized to improve the mechanical strength of regenerated cellulose film. N,N -carbonyldiimidazole was mixed with functionalized MWCNTs and sonicated at 60 °C for 12 h. The resulting MWCNT-imidazolide was mixed with cellulose solution, and reacted at various temperatures for various times. The occurrence of covalent bonds between MWCNTs and cellulose was investigated using Fourier transform infrared spectroscopy and Raman spectroscopy. According to mechanical tensile tests, Young's modulus of the MWCNT/cellulose composite was found to be 11.2 GPa, an increase of approximately 110% with respect to regenerated cellulose film. Copyright © 2010 Society of Chemical Industry [source] Use of ionic liquids for the efficient utilization of lignocellulosic materialsJOURNAL OF CHEMICAL TECHNOLOGY & BIOTECHNOLOGY, Issue 6 2008Shengdong Zhu Abstract Lignocellulosic materials are the most abundant renewable resource in the world and their efficient utilization provides a practical route to maintain social sustainable development. Application of ionic liquids has opened new avenues for the efficient utilization of lignocellulosic materials in such areas as fractionation, preparation of cellulose composites and derivatives, analysis, and removal of pollutants. However, there are still many challenges in putting these potential applications into practical use, for example, the high price of ionic liquids and lack of basic physico-chemical and toxicological data. Further research and financial support are required to address such challenges. Copyright © 2008 Society of Chemical Industry [source] Effect of covalent bonds on the mechanical properties of a multi-walled carbon nanotube/cellulose compositePOLYMER INTERNATIONAL, Issue 8 2010Sungryul Yun Abstract A multi-walled carbon nanotube (MWCNT)/cellulose composite was synthesized to improve the mechanical strength of regenerated cellulose film. N,N -carbonyldiimidazole was mixed with functionalized MWCNTs and sonicated at 60 °C for 12 h. The resulting MWCNT-imidazolide was mixed with cellulose solution, and reacted at various temperatures for various times. The occurrence of covalent bonds between MWCNTs and cellulose was investigated using Fourier transform infrared spectroscopy and Raman spectroscopy. According to mechanical tensile tests, Young's modulus of the MWCNT/cellulose composite was found to be 11.2 GPa, an increase of approximately 110% with respect to regenerated cellulose film. Copyright © 2010 Society of Chemical Industry [source] | ||||||||||