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Online since: February 2013
Authors: Bao Ku Zhu, You Yi Xu, Zhang Gao Le, Qing Chun Chen, Hui Yu Deng
High Flux Nanofiltration Membranes Prepared By Dynamic Self-Assembly of PSS-co-MA and PAH for CuCl2 Removal
Hui-Yu Deng1,2, Qing-Chun Chen1, Zhang-Gao Le1, Bao-Ku Zhu2, You-Yi Xu2
1State Key Laboratory Breeding Base of Nuclear Resources and Environment,East China Institute of Technology, Nanchang, 330013, China
2Institute of Polymer Science, Key Laboratory of Macromolecule Synthesis and Functionalization, EMC-ZJU, Zhejiang University, Hangzhou 310027, China
Keywords: Dynamic self-assembly; PSS-co-MA; PAH; nanofiltration membrane; CuCl2 removal
Abstract.
Dynamically formed membranes (DFM) are formed by filtration though a porous support of a dilute solution containing specific membrane-forming materials.
Due to the advantages of abundant membrane material sources and a simple membrane making technique, DFM is regarded as a very promising separation membrane which had been applied for the preparation of ultrafiltration, microfiltration and pervaporation membranes.
Experimental section Materials.
Tieke, Polyelectrolyte multilayer membranes for pervaporation separation of alcohol/water mixtures, Colloids & Surf.A: Physicochemical and Engineering Aspects, 198–200 (2002) 881–889
Dynamically formed membranes (DFM) are formed by filtration though a porous support of a dilute solution containing specific membrane-forming materials.
Due to the advantages of abundant membrane material sources and a simple membrane making technique, DFM is regarded as a very promising separation membrane which had been applied for the preparation of ultrafiltration, microfiltration and pervaporation membranes.
Experimental section Materials.
Tieke, Polyelectrolyte multilayer membranes for pervaporation separation of alcohol/water mixtures, Colloids & Surf.A: Physicochemical and Engineering Aspects, 198–200 (2002) 881–889
Online since: April 2009
Authors: C.M. Mahajan, A.G. Godbole, S.P. Gumfekar, S.H. Sonawane, M.G. Takwale
Takwale
5
1,2,3,4 Engineering Sciences Dept., Vishwakarma Institute of Technology, Pune -411 037 India
1,5 School of Energy Studies, University of Pune - 411 007 India
Email: c_mahajan9@yahoo.com
Keywords: Al:ZnO thin films, Chemical Spray Pyrolysis (CSP), TCO, Optical, Electrical properties
Abstract: Nanocrystalline undoped and Al doped ZnO thin films were synthesized by the chemical
spray pyrolysis of Zinc acetate and Aluminium chloride solution.
Introduction Zinc oxide (II-VI) is one of the most promising materials for optoelectronic, spintronics and photonics applications.
For semiconductor materials, it yields the carrier concentration, its type, and carrier mobility.
Keying, C.
Alexander, X-ray Diffraction Procedures For Polycrystalline and Amorphous Materials, 2nd Edition, Wiley, New York, (1974)
Introduction Zinc oxide (II-VI) is one of the most promising materials for optoelectronic, spintronics and photonics applications.
For semiconductor materials, it yields the carrier concentration, its type, and carrier mobility.
Keying, C.
Alexander, X-ray Diffraction Procedures For Polycrystalline and Amorphous Materials, 2nd Edition, Wiley, New York, (1974)
Online since: March 2013
Authors: Deng Guang Yu, Xiao Yan Li, Xia Wang, Ying Li, Shi Tang, Xu Yao Zhao
Coaxial electrospinning with ethanol aqueous solution for preparing high quality Zein nanofibers
DengGuang Yu, Xia Wang, XiaoYan Li, Ying Li, Shi Tang, XuYao Zhao
School of Material Science & Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
It has been applied broadly in controlling secondary structures of nanofibers, encapsulating drugs or biological agents into the polymer nanofibers, preparing nanofibers from materials that lack filament-forming properties, enclosing functional liquids within the fiber matrix, manipulating the size of self-assembled nanoparticles, preparing ultrafine fibers from concentrated polymer solutions previously thought to be unspinnable, and improving nanofibers’ quality systematically [22-30].
Materials and Methods Materials Zein was obtained from Aldrich (a purity of 98%, Milwaukee, WI, USA).
Acknowledgement: This work was supported by the key project of the Shanghai Municipal Education Commission (No.13ZZ113) and the National Science Foundation of China (No. 51173107).
It has been applied broadly in controlling secondary structures of nanofibers, encapsulating drugs or biological agents into the polymer nanofibers, preparing nanofibers from materials that lack filament-forming properties, enclosing functional liquids within the fiber matrix, manipulating the size of self-assembled nanoparticles, preparing ultrafine fibers from concentrated polymer solutions previously thought to be unspinnable, and improving nanofibers’ quality systematically [22-30].
Materials and Methods Materials Zein was obtained from Aldrich (a purity of 98%, Milwaukee, WI, USA).
Acknowledgement: This work was supported by the key project of the Shanghai Municipal Education Commission (No.13ZZ113) and the National Science Foundation of China (No. 51173107).
Online since: April 2013
Authors: Muthian Gunasekaran
Yet another area where specially engineered polymer concrete can find major application in metropolitan areas, pertains to bus shelters in the immediate vicinity of urban electric substations.
These materials singly and jointly, and in some cases, in combination with geopolymer-bound high performance hydraulic cement concrete can be engineered, with the assurance of a high degree of reliability, to serve in the management of low level waste, high level waste and also in the various structural/containment vessels.
As one looks to the exploration of other planets within the solar system and looks beyond to exoplanets it is obvious that as the volume of space exploration expands there will be a need for new materials based on the polymer concrete philosophy.
Thus, lightweight polymer concrete reinforced with high-performance fibres, filled partially with lightweight nanometric fillers, can be expected to gain favour with designers just as, within a few decades, composites reinforced with carbon and/or other fibres are now routinely used in commercial aircraft in lieu of traditional metallic materials.
Conclusions Polymer concrete possesses the technical capabilities and the economic viability to be considered as the material of fabrication for a very wide variety of standard and new applications on land, in the sea, and high above in space.
These materials singly and jointly, and in some cases, in combination with geopolymer-bound high performance hydraulic cement concrete can be engineered, with the assurance of a high degree of reliability, to serve in the management of low level waste, high level waste and also in the various structural/containment vessels.
As one looks to the exploration of other planets within the solar system and looks beyond to exoplanets it is obvious that as the volume of space exploration expands there will be a need for new materials based on the polymer concrete philosophy.
Thus, lightweight polymer concrete reinforced with high-performance fibres, filled partially with lightweight nanometric fillers, can be expected to gain favour with designers just as, within a few decades, composites reinforced with carbon and/or other fibres are now routinely used in commercial aircraft in lieu of traditional metallic materials.
Conclusions Polymer concrete possesses the technical capabilities and the economic viability to be considered as the material of fabrication for a very wide variety of standard and new applications on land, in the sea, and high above in space.
Online since: March 2012
Authors: Xue Jing Song, Yun Jun Luo
Effects of End-groups on Properties of Hyperbranched Polyether
Song Xuejing1, a and Luo Yunjun2,b
1 City College of Dongguan University of Technology, Dongguan, 523106, China;
2 School of Material Science and Engineer, Beijing Institute of Technology, Beijing, 100081, China;
a crystal_sxj@yahoo.cn, b yjluo@bit.edu.cn
Corresponding Author.
E- mail: crystal_sxj@yahoo.cn (Song Xuejing) Key words: hyperbranched polyether; thermodynamic properties; end-groups; DSC; viscosity Abstract.
These three different end-groups are hydroxyl groups( as representative of polar end-group), stearic acid ester(as representative of non-polar groups with long-chain aliphatic groups) and acetate(as representative of non-polar with short-chain aliphatic groups) Experimental Materials. 3-methyl-3-oxetanemethanol(MMO), made in laboratory; p-toluenesulfonic acid (p-TSA), 2-ethyl-2- (hydroxymethyl)-l,3-propanediol (TMP), stearic acid, acetic anhydride and pyridine were purchased from beijing chemical factory.
E- mail: crystal_sxj@yahoo.cn (Song Xuejing) Key words: hyperbranched polyether; thermodynamic properties; end-groups; DSC; viscosity Abstract.
These three different end-groups are hydroxyl groups( as representative of polar end-group), stearic acid ester(as representative of non-polar groups with long-chain aliphatic groups) and acetate(as representative of non-polar with short-chain aliphatic groups) Experimental Materials. 3-methyl-3-oxetanemethanol(MMO), made in laboratory; p-toluenesulfonic acid (p-TSA), 2-ethyl-2- (hydroxymethyl)-l,3-propanediol (TMP), stearic acid, acetic anhydride and pyridine were purchased from beijing chemical factory.
Online since: December 2013
Authors: Shuang Fei Wang, Jia Chuan Chen, Xin Yu Wang, Yi Fan Zhang, Wen Qian Li
Materials and methods
1.1 Material
The pilot test is carried out in some paper mills in Shandong.
Conclusions 4.1 The water composition is complicated, so the key to make the device operation stably is timely adjustment the parameter according to the craft, so as to avoid the impact to the system. 4.2The EGSB reactor has been run for 47days of pilot scale test.
Engineers,2005:284-291
Conclusions 4.1 The water composition is complicated, so the key to make the device operation stably is timely adjustment the parameter according to the craft, so as to avoid the impact to the system. 4.2The EGSB reactor has been run for 47days of pilot scale test.
Engineers,2005:284-291
Online since: February 2025
Authors: Sammy Joel Panwal, Nathaniel Wambebe, Adindu C. Kingsley
Kingsley3
1Public Health Dept, Faculty of Health Sciences, National Open University of Nigeria.
2School of Energy and Environmental Engineering, University of Science & Technology Beijing, China.
3Institute of Natural Resources, Environment and Sustainability, University of Port Harcourt.
The findings underscore the importance of addressing energy policy issues and air quality concerns as key factors influencing stress and mental health.
Methods and Materials Study Design and Location This study adopted a cross-sectional design, similar to those used by Hautekiet et al, (2022) [9].
The Statistical Analysis Process The statistical analysis approach used in this study involved several key steps to examine the relationship between air pollution and perceived stress among generator users.
Descriptive statistics were first applied to summarize the data, including mean values, standard deviations, and ranges for the key variables such as PM2.5, PM10, and perceived stress (PSS-10 scale).
The findings underscore the importance of addressing energy policy issues and air quality concerns as key factors influencing stress and mental health.
Methods and Materials Study Design and Location This study adopted a cross-sectional design, similar to those used by Hautekiet et al, (2022) [9].
The Statistical Analysis Process The statistical analysis approach used in this study involved several key steps to examine the relationship between air pollution and perceived stress among generator users.
Descriptive statistics were first applied to summarize the data, including mean values, standard deviations, and ranges for the key variables such as PM2.5, PM10, and perceived stress (PSS-10 scale).
Online since: April 2020
Authors: Feng Hong Cao, Chen Chang, Yao Hui Xu
Materials Letters. 2005, 59: 1511-1515
Materials Science Forum, 2003, 419-422: 57-56
Ordnance Material Science and Engineering, 2002, 25(6): 50-56
JOURNAL OF PLASTICITY ENGINEERING. 2009. 16(3): 155-160
China Machinery Engineering, 2007. 18(3): 361-364.
Materials Science Forum, 2003, 419-422: 57-56
Ordnance Material Science and Engineering, 2002, 25(6): 50-56
JOURNAL OF PLASTICITY ENGINEERING. 2009. 16(3): 155-160
China Machinery Engineering, 2007. 18(3): 361-364.
Online since: March 2016
Authors: Paul M. Weaver, Zhang Ming Wu, Gangadharan Raju
Ph.D. thesis. 2010, Departmetn of Aerospace Engineering, TU Delft
In: 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference.
M., and Gürdal, Z., Design of Variable Stiffness Laminates Using Lamination Parameters, Composites, Part B: Engineering, Vol. 37, Nos. 4–5, 2006, pp. 301–309. doi:10.1016/j.compositesb.2005.12.001 [17] Abdalla, M.
Thesis, 2011, Department of Aerospace Engineering, TU Delft
L., and Gudmundson, P., Lay-Up Optimisation of Composite Material Structures, Proceedings of IUTAM Symposium on Optimal Design with Advanced Materials, Elsevier Science, Amsterdam, 1992, pp. 311–336 [23] Setoodeh, S., Abdalla, M.
In: 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference.
M., and Gürdal, Z., Design of Variable Stiffness Laminates Using Lamination Parameters, Composites, Part B: Engineering, Vol. 37, Nos. 4–5, 2006, pp. 301–309. doi:10.1016/j.compositesb.2005.12.001 [17] Abdalla, M.
Thesis, 2011, Department of Aerospace Engineering, TU Delft
L., and Gudmundson, P., Lay-Up Optimisation of Composite Material Structures, Proceedings of IUTAM Symposium on Optimal Design with Advanced Materials, Elsevier Science, Amsterdam, 1992, pp. 311–336 [23] Setoodeh, S., Abdalla, M.
Online since: September 2013
Authors: Fu Qiang He, Xiao Peng An
Department of Civil Engineering and Architecture,Xiamen University of Technology, Xiamen, 361024
2.
Xiamen Engineering Research Center of Ecological Building Materials, Xiamen, 361024 3.
China Building Materials Academy, Beijing, 10024 Key words: water glass, slag, compressive strength, bulk resistance Abstracts: Compressive strength and AC impedance of mortar made with water-glass-activated slag were investigated as a dependence of modulus (0.5-2.0) and dosage (2-6%) of the water-glass.
The electrical properties give information microstructure and ions concentration in porous materials.
[10] Wu, Q., 1999, Cemeng Engineering (in Chinese), 5, 10-11
Xiamen Engineering Research Center of Ecological Building Materials, Xiamen, 361024 3.
China Building Materials Academy, Beijing, 10024 Key words: water glass, slag, compressive strength, bulk resistance Abstracts: Compressive strength and AC impedance of mortar made with water-glass-activated slag were investigated as a dependence of modulus (0.5-2.0) and dosage (2-6%) of the water-glass.
The electrical properties give information microstructure and ions concentration in porous materials.
[10] Wu, Q., 1999, Cemeng Engineering (in Chinese), 5, 10-11