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Online since: September 2011
Authors: Xue Min Hu, Chang Fa Xiao
Hydrolysis is not only changing the chemical structure of macromolecular fibers, but also forming a porous structure because of partial dissolution of the phenomenon of fiber surface.
Contact area between fiber and water increased due to porous structure improve the water absorption speed and water absorbency.
Chrome yellow method can be well characterized the changes of the structure.
Fiber Chemistry.
Macromolecular Chemistry and Physics.
Contact area between fiber and water increased due to porous structure improve the water absorption speed and water absorbency.
Chrome yellow method can be well characterized the changes of the structure.
Fiber Chemistry.
Macromolecular Chemistry and Physics.
Online since: January 2012
Authors: Xiang Yang Hao, Xiao Ying Hua, Guo Sheng Gai, Xiang Ming Kong, Jian Lu
As indicated by SEM micrographs, the UHMWPE particles are coated with rich CNT-containing layers, resulting in a core–shell structure.
It suggests that the conductivity of CNT/UHMWPE blends is the consequence of a hierarchical conductive structure.
Conclusions By impact coating process, composite particles with core (UHMWPE)-shell (CNT) structure are produced.
This effective method to fabricate conductive polymer composites with relatively lower room-temperature resistivity, has advantages compared with wet-chemistry coating processes.
Yang, et.al., Development of the conductive polymer matrix composite with low concentration of the conductive filler, Materials Chemistry and Physics.
It suggests that the conductivity of CNT/UHMWPE blends is the consequence of a hierarchical conductive structure.
Conclusions By impact coating process, composite particles with core (UHMWPE)-shell (CNT) structure are produced.
This effective method to fabricate conductive polymer composites with relatively lower room-temperature resistivity, has advantages compared with wet-chemistry coating processes.
Yang, et.al., Development of the conductive polymer matrix composite with low concentration of the conductive filler, Materials Chemistry and Physics.
Online since: March 2017
Authors: Habib Nasir, Syed Sajid Ali Shah
Introduction
Graphene consists of a honeycomb-like structure of a single layer of carbon bonded with sp2 hybridization [1,2].
The morphology and structure of graphene sheets were studied by using JSM-490A scanning electron microscope (SEM) produced by Joel.
[6] Yan, Z.P., et al., Journal of Physical Chemistry C, 2014. 118(40): p. 22896-22903
Chemistry-a European Journal, 2014. 20(48): p. 15760-15767
[30] Xu, L.X., et al., Journal of Physical Chemistry C, 2013. 117(20): p. 10730-10742
The morphology and structure of graphene sheets were studied by using JSM-490A scanning electron microscope (SEM) produced by Joel.
[6] Yan, Z.P., et al., Journal of Physical Chemistry C, 2014. 118(40): p. 22896-22903
Chemistry-a European Journal, 2014. 20(48): p. 15760-15767
[30] Xu, L.X., et al., Journal of Physical Chemistry C, 2013. 117(20): p. 10730-10742
Online since: February 2017
Authors: Gu Qin, Jing Chao Hong
The quantitative measurement of glucose has great significance in biological chemistry, clinical chemistry and food analysis, which has promoted the development of glucose enzyme analysis methods; secondly, Clark established the oxygen electrode analysis method in 1954.
Fig 2 Schematic representation of the effect of pore structure on the electrochemical reaction [1].
A SEM (Scanning Electron Microscope) was used for characterization, to observe the apparent morphology microstructure of the Cu nano-rod-like structure on a Si-H based Cu electrode.
Traditional methods of detecting the glucose content in the blood include electro-chemistry and a color readout system.
Crystal structure of glucose oxidase from aspergillus niger refinedat 2-3 a reslution.
Fig 2 Schematic representation of the effect of pore structure on the electrochemical reaction [1].
A SEM (Scanning Electron Microscope) was used for characterization, to observe the apparent morphology microstructure of the Cu nano-rod-like structure on a Si-H based Cu electrode.
Traditional methods of detecting the glucose content in the blood include electro-chemistry and a color readout system.
Crystal structure of glucose oxidase from aspergillus niger refinedat 2-3 a reslution.
Online since: October 2015
Authors: Heru Harsono, Darminto Darminto, I.N.G. Wardana, As’ad Sonief
The diffraction patterns of the samples corresponded to a hexagonal wurtzite structure similar to that of undoped ZnO.
Nancarrow, ZnO nanofluids : Green synthesis, characterization, and antibacterial activity, Materials Chemistry and Physics 2010 121 198-201
Ghasemifard, Synthesis and structure of pure and Mn-doped zinc oxide nanopowders, International Journal of Nanoscience 2010 9 19–28
Naqvi, Structural and optical properties of Mn doped ZnO nanoparticles, Asian Journal of Chemistry 2011 23 (12) 5605-5607
Coaquira, J.E.Rodriguez-Paez, Mn-Doping Effect on Structure and Magnetic Properties of ZnO Nanoparticles, J.
Nancarrow, ZnO nanofluids : Green synthesis, characterization, and antibacterial activity, Materials Chemistry and Physics 2010 121 198-201
Ghasemifard, Synthesis and structure of pure and Mn-doped zinc oxide nanopowders, International Journal of Nanoscience 2010 9 19–28
Naqvi, Structural and optical properties of Mn doped ZnO nanoparticles, Asian Journal of Chemistry 2011 23 (12) 5605-5607
Coaquira, J.E.Rodriguez-Paez, Mn-Doping Effect on Structure and Magnetic Properties of ZnO Nanoparticles, J.
Online since: April 2011
Authors: Mohd Noor Asiah, Mat Zain Basri, Mohamad Rusop
It showed the as deposited TiO2 thin film was amorphous and the films were annealed from 350oC up to 500oC became crystalline structure.
The crystalline structure of the material also contributes in improving the conductivity of TiO2 thin films.
A higher crystallinity structure of TiO2 particles will force a higher conductivity of the thin films.
Kim: Journal of Photochemistry and Photobiology A: Chemistry Vol. 180 (2006), p. 184
Nogueira: Journal of Photochemistry and Photobiology A: Chemistry Vol. 189 (2007), p. 153
The crystalline structure of the material also contributes in improving the conductivity of TiO2 thin films.
A higher crystallinity structure of TiO2 particles will force a higher conductivity of the thin films.
Kim: Journal of Photochemistry and Photobiology A: Chemistry Vol. 180 (2006), p. 184
Nogueira: Journal of Photochemistry and Photobiology A: Chemistry Vol. 189 (2007), p. 153
Online since: April 2008
Authors: J. Strnad, Z. Strnad, Miroslav Holeček, J. Šesták, Nobuyoshi Koga
We
used it as a simple and useful way for the description of bio-glass compositions and their structures
[15].
The surface chemistry is also thought to affect the secondary stability independently of the surface topography, although it is difficult to separate the effects of these two factors.
Šesták "Structure and Magnetic Properties of Fe-rich Oxide Glasses" Amer.
Albrektsson "Optimum surface properties of oxidized implants for reinforcement of Osseointegration: Surface Chemistry, Oxide thickness, Porosity, Roughness and crystal structure" Int.J.
Solids Structures 43 (2006) 7393
The surface chemistry is also thought to affect the secondary stability independently of the surface topography, although it is difficult to separate the effects of these two factors.
Šesták "Structure and Magnetic Properties of Fe-rich Oxide Glasses" Amer.
Albrektsson "Optimum surface properties of oxidized implants for reinforcement of Osseointegration: Surface Chemistry, Oxide thickness, Porosity, Roughness and crystal structure" Int.J.
Solids Structures 43 (2006) 7393
Online since: February 2015
Authors: Yan Qiao, Rui Fang Zhang
Gold such as marker particle composite particles is a great potential application value in biological chemistry because gold is the parent metal materials.
Its molecular structure is shown in figure 1.
Fig 1 3.5 G PAMAM molecular structure Synthesis of CdS/Au nanocomposites.
Hydrothermal synthesis of CdS/ZnO core-shell structure nano particles [J].
Starburst dendrimers: Molecular-level control of size, shape,surface chemistry, topology, and flexibility from atoms to macroscopic matter.
Its molecular structure is shown in figure 1.
Fig 1 3.5 G PAMAM molecular structure Synthesis of CdS/Au nanocomposites.
Hydrothermal synthesis of CdS/ZnO core-shell structure nano particles [J].
Starburst dendrimers: Molecular-level control of size, shape,surface chemistry, topology, and flexibility from atoms to macroscopic matter.
Online since: September 2011
Authors: Bo Wen Cheng, Lei Xia, Dong Zhang, Peng Xi
The application and researches of flash spinning nonwoven
Dong Zhang1, 2, a, Lei Xia1, 2, b, Peng Xi3, 4, c, Bowen Cheng1, 2, d
1School of Textile, Tianjin Polytechnic University, Tianjin 300160, China
2Key Laboratory of Advanced Textile Composites, Ministry of Education of China, Tianjin 300160, China
3Tianjin Multicipal Kay Lab of Fiber Modification and Functional Fiber, Tianjin Polytechnic University, Tianjin 300160, China
4State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry Chinese Academy of Sciences, Beijing 100080, China
a0706.zhangdong@163.com, bxia1983@163.com, cxipeng@tjpu.edu.cn, dbowen@tjpu.edu.cn
Keywords: Flash-spinning, Nonwoven, Principle, Application
Abstract.
The fiber-forming polymers are polyethylene or polypropylene and some other polyolefin with neat structure.
The characteristic of polymer’s structure determined the choice of the solvent and additives.
C B Spinneret hole Polymer solution Fig. 3 Structure scheme at the spinneret of flash spinning The structure of spinneret hole is shown in Fig. 3.
China is one of the largest nonwoven producers in the world, but the industrial structure is irrational, it is necessary that developing the research of this field.
The fiber-forming polymers are polyethylene or polypropylene and some other polyolefin with neat structure.
The characteristic of polymer’s structure determined the choice of the solvent and additives.
C B Spinneret hole Polymer solution Fig. 3 Structure scheme at the spinneret of flash spinning The structure of spinneret hole is shown in Fig. 3.
China is one of the largest nonwoven producers in the world, but the industrial structure is irrational, it is necessary that developing the research of this field.
Online since: October 2013
Authors: Potjanart Suwanruji, Jantip Setthayanond, Jaranya Suksulap
Preparation and Characterization of Cellulose Films with Curcumin
Jaranya Suksulap1, a,Potjanart Suwanruji1, band JantipSetthayanond2, c
1 Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok, 10900 Thailand
2Department of Textile Science, Faculty of Agro-Industry, Kasetsart University Bangkok, 10900 Thailand
abeejung52@hotmail.com, bfscipjs@ku.ac.th, cJantip.s@ku.ac.th
Keywords:Film, Cellulose, Regenerated cellulose, Curcumin
Abstract.
Cellulose is insoluble in water and most organic solvents due to inter- and intra-molecular hydrogen bonds and considerable van der Waals forces between the non-polar groups within the structure of cellulose [1].
The crystallographic structure and crystallinity was analyzed by a D8 DISCOVER x-ray diffractometer from Bruker (Bruker Optics, Inc., Billerica, MA, USA) with Cukα radiation.The mechanical properties of the film wereexamined using the Universal Testing Machine (Lloyd) model LRX tester following the ASTM D638 standard at the gauge length of 3 cm and strain rate of 10mm/min.
The Crystalline structure of cellulose I could be destroyed by NaOH at low temperature.
Acknowledgements This work was financially supported by theGraduate School Kasetsart University, Thailand and Department of Chemistry, Faculty of Science, Kasetsart University, Thailand.
Cellulose is insoluble in water and most organic solvents due to inter- and intra-molecular hydrogen bonds and considerable van der Waals forces between the non-polar groups within the structure of cellulose [1].
The crystallographic structure and crystallinity was analyzed by a D8 DISCOVER x-ray diffractometer from Bruker (Bruker Optics, Inc., Billerica, MA, USA) with Cukα radiation.The mechanical properties of the film wereexamined using the Universal Testing Machine (Lloyd) model LRX tester following the ASTM D638 standard at the gauge length of 3 cm and strain rate of 10mm/min.
The Crystalline structure of cellulose I could be destroyed by NaOH at low temperature.
Acknowledgements This work was financially supported by theGraduate School Kasetsart University, Thailand and Department of Chemistry, Faculty of Science, Kasetsart University, Thailand.