The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Benu Adhikari - One of the best experts on this subject based on the ideXlab platform.
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preparation and characterization of cellulose nanofibers from de pectinated sugar beet pulp
Carbohydrate Polymers, 2014Co-Authors: Meng Li, Yanling Cheng, Lijun Wang, Dong Li, Benu AdhikariAbstract:Cellulose nanofibers (diameter =10-70 nm) were produced using chemical Treatments (Alkali Treatment and bleaching) and high pressure homogenization from de-pectinated sugar beet pulp (DSBP). Chemical analysis and Fourier transform infrared spectroscopy (FTIR) indicated that the chemical Treatments greatly removed the hemicellulose and lignin from the DSBP and significantly increased the cellulose content. The crystallinity of the cellulose nanofibers increased from 35.67% to 69.62% after Alkali Treatment and bleaching. The thermal degradation temperature of DSBP cellulose nanofibers was 271.7 degrees C which was found to be 47.3 degrees C higher than that of the untreated DSBP. The DSBP cellulose nanofibers can be preferably used as reinforcement in the biocomposite material at high temperature.
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preparation and characterization of cellulose nanofibers from de pectinated sugar beet pulp
Carbohydrate Polymers, 2014Co-Authors: Meng Li, Yanling Cheng, Lijun Wang, Dong Li, Benu AdhikariAbstract:Abstract Cellulose nanofibers (diameter = 10–70 nm) were produced using chemical Treatments (Alkali Treatment and bleaching) and high pressure homogenization from de-pectinated sugar beet pulp (DSBP). Chemical analysis and Fourier transform infrared spectroscopy (FTIR) indicated that the chemical Treatments greatly removed the hemicellulose and lignin from the DSBP and significantly increased the cellulose content. The crystallinity of the cellulose nanofibers increased from 35.67% to 69.62% after Alkali Treatment and bleaching. The thermal degradation temperature of DSBP cellulose nanofibers was 271.7 °C which was found to be 47.3 °C higher than that of the untreated DSBP. The DSBP cellulose nanofibers can be preferably used as reinforcement in the biocomposite material at high temperature.
Reinhard Gruber - One of the best experts on this subject based on the ideXlab platform.
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in vitro adhesion of fibroblastic cells to titanium alloy discs treated with sodium hydroxide
Clinical Oral Implants Research, 2015Co-Authors: Maisa Al Mustafa, Hermann Agis, Heinzdieter Muller, Georg Watzek, Reinhard GruberAbstract:OBJECTIVE Adhesion of osteogenic cells on titanium surfaces is a prerequisite for osseointegration. Alkali Treatment can increase the hydrophilicity of titanium implant surfaces, thereby supporting the adhesion of blood components. However, it is unclear if Alkali Treatment also supports the adhesion of cells with a fibroblastic morphology to titanium. MATERIALS AND METHODS Here, we have used a titanium alloy (Ti-6AL-4V) processed by Alkali Treatment to demonstrate the impact of hydrophilicity on the adhesion of primary human gingival fibroblast and bone cells. Also included were the osteosarcoma and fibroblastoma cell lines, MG63 and L929, respectively. Cell adhesion was determined by scanning electron microscopy. We also measured viability, proliferation, and protein synthesis of the adherent cells. RESULTS Alkali Treatment increased the adhesion of gingival fibroblasts, bone cells, and the two cell lines when seeded onto the titanium alloy surface for 1 h. At 3 h, no significant changes in cell adhesion were observed. Cells grown for 1 day on the titanium alloy surfaces processed by Alkali Treatment behave similarly to untreated controls with regard to viability, proliferation, and protein synthesis. CONCLUSION Based on these preliminary In vitro findings, we conclude that Alkali Treatment can support the early adhesion of cells with fibroblastic characteristics to a titanium alloy surface.
Yueqin Song - One of the best experts on this subject based on the ideXlab platform.
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an effective method to enhance the stability on stream of butene aromatization post Treatment of zsm 5 by Alkali solution of sodium hydroxide
Applied Catalysis A-general, 2006Co-Authors: Yueqin Song, Yi Song, Qingxia Wang, Longya XuAbstract:The catalytic stability of ZSM-5 zeolite in butene aromatization was improved by the Treatment of ZSM-5 zeolite with sodium hydroxide solution of appropriate concentration. By characterizing pore structures, the acidity of the catalyst and the coke amount, we found that Alkali-Treatment of ZSM-5 led to a formation of new mesopores resulting from a preferential removal of silicon species, while the intrinsic micropores remained unchanged. As for the acidity, the amount and properties of acid sites exhibited a slight change on the Alkali-treated ZSM-5 zeolites. In addition, the Alkali-Treatment to ZSM-5 zeolite led to only a little reduction in the amount of coke during the butene aromatization. But a portion of coke was deposited in the newly created mesopores because of the Alkali-Treatment and the formation of coke in the micropores was found to be reduced. These changes can suppress the channel blockage of ZSM-5 zeolite by the coke deposits during butene aromatization. The variation of the coking location was the main reason for the favorable enhancement in the reaction stability during butene aromatization.
Meng Li - One of the best experts on this subject based on the ideXlab platform.
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preparation and characterization of cellulose nanofibers from de pectinated sugar beet pulp
Carbohydrate Polymers, 2014Co-Authors: Meng Li, Yanling Cheng, Lijun Wang, Dong Li, Benu AdhikariAbstract:Cellulose nanofibers (diameter =10-70 nm) were produced using chemical Treatments (Alkali Treatment and bleaching) and high pressure homogenization from de-pectinated sugar beet pulp (DSBP). Chemical analysis and Fourier transform infrared spectroscopy (FTIR) indicated that the chemical Treatments greatly removed the hemicellulose and lignin from the DSBP and significantly increased the cellulose content. The crystallinity of the cellulose nanofibers increased from 35.67% to 69.62% after Alkali Treatment and bleaching. The thermal degradation temperature of DSBP cellulose nanofibers was 271.7 degrees C which was found to be 47.3 degrees C higher than that of the untreated DSBP. The DSBP cellulose nanofibers can be preferably used as reinforcement in the biocomposite material at high temperature.
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preparation and characterization of cellulose nanofibers from de pectinated sugar beet pulp
Carbohydrate Polymers, 2014Co-Authors: Meng Li, Yanling Cheng, Lijun Wang, Dong Li, Benu AdhikariAbstract:Abstract Cellulose nanofibers (diameter = 10–70 nm) were produced using chemical Treatments (Alkali Treatment and bleaching) and high pressure homogenization from de-pectinated sugar beet pulp (DSBP). Chemical analysis and Fourier transform infrared spectroscopy (FTIR) indicated that the chemical Treatments greatly removed the hemicellulose and lignin from the DSBP and significantly increased the cellulose content. The crystallinity of the cellulose nanofibers increased from 35.67% to 69.62% after Alkali Treatment and bleaching. The thermal degradation temperature of DSBP cellulose nanofibers was 271.7 °C which was found to be 47.3 °C higher than that of the untreated DSBP. The DSBP cellulose nanofibers can be preferably used as reinforcement in the biocomposite material at high temperature.
Runcang Sun - One of the best experts on this subject based on the ideXlab platform.
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laccase and Alkali Treatments of cellulose fibre surface lignin and its influences on fibre surface properties and interfacial behaviour of sisal fibre phenolic resin composites
Composites Part A-applied Science and Manufacturing, 2010Co-Authors: Xinwen Peng, Lin Xin Zhong, Junli Ren, Runcang SunAbstract:This paper is an attempt to investigate the influences of enzyme (laccase) and Alkali Treatments on the surface lignin of single cellulose fibre. The fibre surface characteristics and the interfacial behaviour of the sisal fibre/phenolic resin composites were also studied by SEM, AFM, XPS. The surface lignin greatly affected the surface physical and chemical properties of single cellulose fibres. The surface lignin concentration was up to 35% for the raw fibre without any Treatment, and then it decreased to 24%, 20% and 18% for the fibres with laccase Treatment, Alkali Treatment and laccase/Alkali Treatment, respectively. The removal of lignin from fibre surface could enhance the interfacial strength of composites, and thus increase the tensile strength and internal bonding strength by 43% and 51%, respectively, for the composites obtained from laccase/Alkali treated fibres.