Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: January 2012
Authors: Qian Jie Zhang, Ke Lu Yan
Anti-felting Property of Wool Fabric Treated by Excilamp and Enzyme
Qianjie ZHANG 1, 2, a and Kelu YAN 1, 2, b
1Key Laboratory of Science&Technology of Eco-Textile( Ministry of Education), Donghua University, Shanghai 201620, China
2College of Chemistry, Chemical Engineering & Biotechnology, Donghua University, Shanghai 201620, China
ashe_elf_qj@mail.dhu.edu.cn, bklyan@dhu.edu.cn (corresponding author)
Keywords: Wool; Excilamp; Enzyme; Shrinkproofing
Abstract.
The cuticle or scale cell structure, which is just occupied 10% of the total weight of wool fiber, is primarily responsible for felting by the differential frictional effect [1].
Table 1 Characteristic IR absorbance frequencies Species Structure Wavenumber(cm-1) Cystine dioxide -SO2-S- 1121 Cystine monoxide -SO-S- 1071 Cyteic acid -SO3- 1040 S-sulphonate -S-SO3- 1022 3 Results and Discussion 3.1 DFE of wool fiber treated by excilamp and enzyme treatment The shrinking properties of woolen textiles (a.k.a. felting) in the presence of water and mechanical agitation are due to the occurrence of scales at the wool involved.
The cuticle or scale cell structure, which is just occupied 10% of the total weight of wool fiber, is primarily responsible for felting by the differential frictional effect [1].
Table 1 Characteristic IR absorbance frequencies Species Structure Wavenumber(cm-1) Cystine dioxide -SO2-S- 1121 Cystine monoxide -SO-S- 1071 Cyteic acid -SO3- 1040 S-sulphonate -S-SO3- 1022 3 Results and Discussion 3.1 DFE of wool fiber treated by excilamp and enzyme treatment The shrinking properties of woolen textiles (a.k.a. felting) in the presence of water and mechanical agitation are due to the occurrence of scales at the wool involved.
Online since: February 2022
Authors: Marina G. Kovaleva, Viacheslav V. Sirota, Michael Limarenko, Dmitriy Prokhorenkov, Sergey Zaitsev, Andrey I. Gorodov
Results and Discussions
Preliminary studies of the structure and composition of Ni-B/Cr7C3 nanocomposite coating showed the presence of three phases of the main phases γ-Ni, Ni-B and Cr7C3.
Seshadri Electrodeposited Ni–B coatings: Formation and evaluation of hardness and wear resistance Materials chemistry and physics 99(2-3) (2006) 300-308 [5] V.
Delaunois, Comparison of various electroless nickel coatings on steel: structure, hardness and abrasion resistance Materials Science Forum 783 (2014) 1405-1413 [6] U.
Seshadri Electrodeposited Ni–B coatings: Formation and evaluation of hardness and wear resistance Materials chemistry and physics 99(2-3) (2006) 300-308 [5] V.
Delaunois, Comparison of various electroless nickel coatings on steel: structure, hardness and abrasion resistance Materials Science Forum 783 (2014) 1405-1413 [6] U.
Online since: July 2021
Authors: Victor Verbetsky, Lev Aleksandrovich Ivanov, Denis Ivanovich Gorbunov, Irina Tereshina, Olga V. Akimova, Michael Paukov, Svetlana Veselova
Comparative High-Field Magnetization Study of (Sm,Er)2Fe17 and Er2Fe17 Compounds and their Nitrides
Lev Ivanov1,a, Michael Paukov2,3,b, Irina Tereshina1,c*, Svetlana Veselova4,d, Olga Akimova1,e, Viktor Verbetsky4,f and Denis Gorbunov5,g
1Lomonosov Moscow State University, Faculty of Physics, Moscow, Russia
2Nuclear Fuel Cycle Department, Centrum Vyzkumu Rez, Husinec-Rez, Czech Republic
3Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
4Lomonosov Moscow State University, Department of Chemistry, Moscow, Russia
5Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
aivleo15130@mail.ru, bmichael.paukov@gmail.com, ctereshina@physics.msu.ru, dsv_veselova@mail.ru, eakimova@physics.msu.ru, fverbetsky@hydride.chem.msu.ru, gd.gorbunov@hzdr.de
Keywords: Intermetallic compound, nitrogen, magnetization, exchange interaction, spin-reorientation transition.
Results and Discussion The Sm1.8Er0.2Fe17N2.1 and Sm1.2Er0.8Fe17N2 nitride retained the same structural type of Th2Zn17 as the initial compounds Sm1.8Er0.2Fe17 and Sm1.2Er0.8Fe17, while Er2Fe17 and its nitride Er2Fe17N2 have Th2Ni17 – type crystal structure.
Savchenko, Structure and magnetic properties of (Sm,Ho)2Fe17Nx (x=0; 2.4), J.
Results and Discussion The Sm1.8Er0.2Fe17N2.1 and Sm1.2Er0.8Fe17N2 nitride retained the same structural type of Th2Zn17 as the initial compounds Sm1.8Er0.2Fe17 and Sm1.2Er0.8Fe17, while Er2Fe17 and its nitride Er2Fe17N2 have Th2Ni17 – type crystal structure.
Savchenko, Structure and magnetic properties of (Sm,Ho)2Fe17Nx (x=0; 2.4), J.
Online since: November 2011
Authors: Hong Xue Xie, John Prausnitz, Xiu Ling Wu
Pretreatment of biomass by ILs typically results in a decrease in cellulose crystallinity as well as a transformation of cellulose I to cellulose II, depending on pretreatment conditions.18,19 Despite an increasing number of publications on the pretreatment of biomass using ILs over the past few years, there have been few systematic studies of the influence of pretreatment conditions on the crystalline structure of cellulose after recovery20.
Lignin has no significant peak in the region 2θ=5-30° because lignin has no crystal structure.
Stroeve: Industrial Engineering Chemistry Research, Vol. 48 (2009), p.3713
Lignin has no significant peak in the region 2θ=5-30° because lignin has no crystal structure.
Stroeve: Industrial Engineering Chemistry Research, Vol. 48 (2009), p.3713
Online since: May 2011
Authors: Ji Li, Chun Hui Yang, Lei Zhang, Tian Long Ma
Introduction
Hydrosilylation of alkenes is one of the most important Si–C bond formation reactions in organosilicon chemistry [1,2].
Infrared spectroscopy provides information on the chemical structures of the adsorbent material.
The band centered at 1730 cm-1 is ascribed to the stretching vibrations of carboxyl groups in carboxyl, ester, lactone, quinone and/orion–radical structures.
Infrared spectroscopy provides information on the chemical structures of the adsorbent material.
The band centered at 1730 cm-1 is ascribed to the stretching vibrations of carboxyl groups in carboxyl, ester, lactone, quinone and/orion–radical structures.
Online since: December 2011
Authors: Li Wei, Huan Xia Zhang
However, as reinforcements for manufacturing high performance composite materials, carbon fibers have poor wettability and adsorption with most polymers because carbon fiber (CF) surface is non-polar and compound of highly crystallized graphitic basal planes with inert structures [2].
The carbon fibers surface is non-polar and compound of highly crystallized graphitic basal planes with inert structures [7].
Davis: Journal of Physics and Chemistry of Solids Vol. 69 (2008), p. 2932 [8] H.
The carbon fibers surface is non-polar and compound of highly crystallized graphitic basal planes with inert structures [7].
Davis: Journal of Physics and Chemistry of Solids Vol. 69 (2008), p. 2932 [8] H.
Online since: December 2012
Authors: Mujtahid Kaavessina, Fitriani Khanifatun, Imtiaz Ali, Saeed M. Alzahrani
It can be documented here, the degradation kinetic was influenced by chemical structure, molecular weight and its distribution, kind of filler and also process conditions (temperature and pH value).
Due to the irregularity structure of amorphous regions in biocomposites, this region was easier to be decomposed thermally.
Iwasa, Materials Chemistry and Physics, 99 (2006) 398-404
Due to the irregularity structure of amorphous regions in biocomposites, this region was easier to be decomposed thermally.
Iwasa, Materials Chemistry and Physics, 99 (2006) 398-404
Online since: February 2013
Authors: Mu Zhu, Cheng Gong Qin, Tong Liu, Hai Long Shen, Tong Wen Zhang
The crystal structures of these powders were characterized by using a Rigaku X-ray diffractometer with monochromatic Cu Kɑ radiation.
Moslang, TEM characterization of structure and composition of nanosized ODS particles in reduced activation ferritic–martensitic steels, Journal of Nuclear Materials. 329-333 (2004) 347-351
Miyamoto, Investigation of TiAl/Ti2AlC composites prepared by spark plasma sintering, Materials Chemistry and Physics. 75 (2002) 291-295
Moslang, TEM characterization of structure and composition of nanosized ODS particles in reduced activation ferritic–martensitic steels, Journal of Nuclear Materials. 329-333 (2004) 347-351
Miyamoto, Investigation of TiAl/Ti2AlC composites prepared by spark plasma sintering, Materials Chemistry and Physics. 75 (2002) 291-295
Online since: August 2013
Authors: Wirach Taweepreda, Hasleena Boontawee, Prapaporn Boonme, Wiwat Pichayakorn
The matrix structures of the rubber patches may be tighter at higher storage temperatures for long duration due to rearrange of molecular chain [8], leading to difficulty of drug extraction and release.
Roberts, Natural rubber chemistry and technology, Oxford University Press, Oxford, 1998
Schmidt, The role of molecular structure in the crystal polymorphism of local anesthetic drugs: crystal polymorphism of local anesthetic drugs part X, Pharm.
Roberts, Natural rubber chemistry and technology, Oxford University Press, Oxford, 1998
Schmidt, The role of molecular structure in the crystal polymorphism of local anesthetic drugs: crystal polymorphism of local anesthetic drugs part X, Pharm.
Online since: May 2011
Authors: Chuan Ling Men, Hong Qin Li, Hua Zhang
The samples were cut off from a cold-rolled metal sheet of austenitic steel after plate rolling so that the austenitic structure was retained.
The main chemical composition of 304 stainless steel used for the experiments Element C Cr Ni Mn P S Mo Si Content, wt% ≤0.07 17.00-19.00 8.00-10.00 ≤2.00 ≤0.035 ≤0.030 10.50 ≤1.00 The production process flows of pulse electrochemical polishing of 304 stainless steel is: Chemistry degreasing →Cleaning→Pickling→Cleaning→Pulse electrochemical polishing→Cleaning→Passivation→Cleaning→Neutralization→Cleaning→Airing or oven drying.
The structure of adsorbed shielding layer is determined by molecular interactions which are a complicated function of the molecular thermal motions and intermolecular forces, especially the strong hydrogen bonds and electrostatic forces.
The main chemical composition of 304 stainless steel used for the experiments Element C Cr Ni Mn P S Mo Si Content, wt% ≤0.07 17.00-19.00 8.00-10.00 ≤2.00 ≤0.035 ≤0.030 10.50 ≤1.00 The production process flows of pulse electrochemical polishing of 304 stainless steel is: Chemistry degreasing →Cleaning→Pickling→Cleaning→Pulse electrochemical polishing→Cleaning→Passivation→Cleaning→Neutralization→Cleaning→Airing or oven drying.
The structure of adsorbed shielding layer is determined by molecular interactions which are a complicated function of the molecular thermal motions and intermolecular forces, especially the strong hydrogen bonds and electrostatic forces.