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Online since: January 2016
Authors: Zakaria Man, Zahid Majeed, Nurlidia Mansor
In another research, increasing lignin percentages relative to the starch has showed tensile strength also increased [6]. to Decline in the tensile properties of lignin-polylactic acid blends has been reported upon addition of lignin greater than 5% as compared to 0-1% due to lignin's densely interconnected structure, limits its interaction with biopolymer [7].
Increasing trend for the tensile properties of pristine composites is related to lignin rigid molecular structure and its low molecular fraction.
Monties, "Utilization of pine kraft lignin in starch composites: impact of structural heterogeneity," Journal of Agricultural and Food Chemistry, vol. 46, pp. 2234-2240, 1998
Online since: July 2015
Authors: Eva Vejmelková, Pavel Reiterman, Monika Čáchová, Jaroslava Koťátková
Mechanical and Thermal Properties of HSC with Fine Natural Pozzolana as SCM KOŤÁTKOVÁ Jaroslava1,a *, ČÁCHOVÁ Monika2,b, VEJMELKOVÁ Eva2,3,c and REITERMAN Pavel1,3,d 1Czech Technical University in Prague, Faculty of Civil Engineering, Experimental Centre, Thákurova 7, 166 29 Prague 6, Czech Republic 2Czech Technical University in Prague, Faculty of Civil Engineering, Department of Materials Engineering and Chemistry, Thákurova 7, 166 29 Prague 6, Czech Republic 3Czech Technical University in Prague, University Centre for Energy Efficient Buildings, Třinecká 1024, 273 43 Buštěhrad ajaroslava.kotatkova@fsv.cvut.cz, bmonika.cachova@fsv.cvut.cz, ceva.vejmelkova@fsv.cvut.cz, dpavel.reiterman@fsv.cvut.cz Keywords: High strength concrete, natural pozzolana, basic properties, thermal properties, mechanical properties.
Its inner structure is very porous, which results in lower bulk density of the eventual product [2, 3].
The inner structure of NP improves the thermal properties of the materials.
Online since: November 2015
Authors: S. Zhong, D. Han, W. Chen
Journal of Industrial and Engineering Chemistry. 14 (2008) 644-650. ].
It may be because that the compressive strength is not so sensitive to the small structure change caused by the polymer adsorption.
While when the dosage of polymers is increased to 10%, the network structure between polymer films and hydration products can be formed in the hardened cement paste, the volume of soft flaws is not ignorable, then the compressive strength is reduced significantly.
Online since: February 2011
Authors: Wen Liang Gao, Fang Li
Catalytic Hydrogenation of Nitrate Ions over Pd-Cu/ZSM-5 Catalyst Wenliang Gao a, and Fang Li b College of Chemistry and Chemical Engineering, Chongqing University No. 174 Shazheng Jie, Shapingba, Chongqing, 400044, P.
Zeolites are excellent supporters with high specific surface and regular cavity structure, and in the hydrogenation reactions, they are usually selected as supports of noble metals (Pd, Pt or Rh) to improve their degree of dispersion [29].
Gao [28] et al found that nitrate-to-nitrite reduction step was a less structure-sensitive reaction and Cu2O was probably to act as the active centers and participate in the catalytic nitrate reduction.
Online since: March 2007
Authors: Jung Ho Ahn, Jin Chun Kim, Yong Jin Kim
The microstructures of the powders have fine dendritic structures.
As shown in the OM photo, after extrusion, the solidification structures was severely broken by the deformation, and the primary Si particles in the Al matrix were alined along the direction of the extrusion.
Takahashi, Materails Chemistry and Physics, 81 (2003) 393-395 [5] J.
Online since: June 2011
Authors: Zhi Yu Wen, Dong Ling Li, Zheng Guo Shang, Sheng Qiang Wang
Introduction Glass-based microfluidic devices have been widely applied in the fields of biology, chemistry and medical, since they provide advantages of beneficial optical properties, good insulating status, high resistance to mechanical stress and surface stability [1].
During isotropic etching process, due to the undercut effect, the edge of the mask becomes a freestanding structure.
Due to the isotropic nature of wet etching, the etched structure always shows a semi-circular wall and the undercut exists during the etching process.
Online since: July 2011
Authors: Yao Jun Sun, Hai Yan Gao, Yuan Wang, Ming Chen
Extrusion of starch granules causes changes in their morphological and molecular structure depending on several factors including moisture content, cooking temperature, and mechanical energy input.
Melting and gelatinization require starch conversion from a crystalline to amorphous structure [5].
Cereal Chemistry, Vol.82(2005), p. 223 [7] Saha S.; Gupta A.; Singh S.R.K.; Bharti N.; Singh K.P.; Mahajan V.; Gupta H.S.
Online since: May 2011
Authors: Kun Wang, Li Na Dai, He Nan Li, Chang Ju, Wei Liu, Yi Cong Jin
Copper Phthalocyanine/Fe3O4 Nanocomposite for Photocatalytic Degradation of Methylene Blue under Visible Irradiation Kun Wang1, a, Lina Dai1, Henan Li1, Chang Ju1, Wei Liu1 and Yicong Jin1 1College of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China awangkun@ujs.edu.cn Keywords: Copper Phthalocyanine/Fe3O4, Magnetic separation, Photocatalysis, Methylene Blue, Visible Light.
The main diffraction peaks at 220, 311, 400, 422, 511, 400° were identical to the standard cubic spinel structure of Fe3O4 MNPs cards (JCPDS 65-3107), and no other crystalline phases were observed in the XRD diffractogram.
Similar characteristic peaks can also be found in Fig. 1A(b), suggesting that the crystalline structure of Fe3O4 MNPs did not change by the modification with CuPc.
Online since: July 2005
Authors: Nina Orlovskaya, Jakob Kübler, Richard Dobedoe, Gurdial Blugan, I. Gee
Hence a new design of laminates with thinner compressive micro-layers has been proposed, a fractured specimen shows the structure in Fig. 7.
The structure contains three micro-layers of Si3N4 each of 30 µm thickness.
Chemistry and Physics, 1996, 45, p2003-10
Online since: November 2014
Authors: Shamsul Baharin Jamaludin, Azmi Rahmat, M.A. Sri Asliza, K. Mohd Zaheruddin, Khairel Rafezi Ahmad
X-ray diffraction (XRD) (model shimadzu-6000) analysis was performed on the powder and sintered specimen to determine the possible growth of Ni crystal structure on the HA and the microstructure polish fracture surface after sintering was examined by SEM machine.
XRD patterns for Ni are consistent with PDF no:01-1258 and show the growth of nickel structure.
Arabian Journal of Chemistry, Volume 5, Issue 4, October 2012, Pages 439-446, ISSN 1878-5352