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Online since: January 2014
Authors: Nik Mohd Azmi Nik Abdul Aziz, Noor Izaanin Ramli, Nur Ellina Azmi, Hamidah Sidek, Nurhayati Ariffin, Nor Azah Yusof, Jaafar Abdullah, Zuhana Ahmad Zubir, Samsulida Abd. Rahman
Box 7035, 40700 Shah Alam, Selangor, Malaysia.
2 Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
3 Advanced Materials and Nanotechnology Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
4 Advance Material Research Centre (AMREC), SIRIM Berhad, Lot 34, Jalan Hi-Tech 2/3, Kulim Hi-Tech Park, 09000 Kulim, Kedah Darul Aman, Malaysia.
This finding supports the argument that in ligand-exchange reactions the loss of quantum yield arose from alteration of the CdSe/ZnS structure, and not from the effect of mercapto-carbonic acids or thiol-terminated as capping ligands.
Nadeau (2005), Photo-physical properties of biologically compatible CdSe quantum dot structures, J.
This finding supports the argument that in ligand-exchange reactions the loss of quantum yield arose from alteration of the CdSe/ZnS structure, and not from the effect of mercapto-carbonic acids or thiol-terminated as capping ligands.
Nadeau (2005), Photo-physical properties of biologically compatible CdSe quantum dot structures, J.
Online since: October 2014
Authors: Piotr Lacki, Janina Adamus, Monika Gierzyńska-Dolna, Wilhelm Gorecki
When using this type of sheets, a strong supporting structure is not required.
Barranco, XPS stude of the surface chemistry of conventional hot-dip galvanised pure Zn, galvanneal and Zn-Al coatings on steel, Acta Mater. 51 (2003) 5413-5424
Li, External reinforcement of high strength concrete columns, Composite Structures 65 (2004) 279-287
Barranco, XPS stude of the surface chemistry of conventional hot-dip galvanised pure Zn, galvanneal and Zn-Al coatings on steel, Acta Mater. 51 (2003) 5413-5424
Li, External reinforcement of high strength concrete columns, Composite Structures 65 (2004) 279-287
Online since: February 2018
Authors: Ling Pang, Shao Peng Wu, Xue Mei Zhang, Guo Fu Zhang
The water can diffuse into the pavement structure under the effect of tide, storm and rain.
References [1] Liu X, Wu S, Liu G, Effect of ultraviolet aging on rheology and chemistry of LDH-modified bitumen, Materials. 8 (2015) 5238-5249
[7] Xu H, Guo W, Tan Y, Internal structure evolution of asphalt mixtures during freeze-thaw cycles, Materials & Design. 86 (2015) 436-446
References [1] Liu X, Wu S, Liu G, Effect of ultraviolet aging on rheology and chemistry of LDH-modified bitumen, Materials. 8 (2015) 5238-5249
[7] Xu H, Guo W, Tan Y, Internal structure evolution of asphalt mixtures during freeze-thaw cycles, Materials & Design. 86 (2015) 436-446
Online since: October 2015
Authors: Reza Arjmandi, Azman Hassan, Mohamad Haafiz Mohamad Kassim
Cellulose is one of the most abundant biopolymers on earth, occurring in wood, cotton, hemp and other plant-based materials and serving as the dominant reinforcing phase in plant structures.
Thus, highly crystalline cellulose structure (combined with high aspect ratio and nanoscale dimension) possesses all the qualities required to be ideal candidates as reinforcements for polymer matrices [11].
Cellulose nanowhiskers have a high surface area to volume ratio; this means that the surface plays a dominant role in not only the mechanical efficiency of stress transfer in a nanocomposites, but also the ability to modify the surface chemistry.
Thus, highly crystalline cellulose structure (combined with high aspect ratio and nanoscale dimension) possesses all the qualities required to be ideal candidates as reinforcements for polymer matrices [11].
Cellulose nanowhiskers have a high surface area to volume ratio; this means that the surface plays a dominant role in not only the mechanical efficiency of stress transfer in a nanocomposites, but also the ability to modify the surface chemistry.
Online since: May 2019
Authors: Narumon Seeponkai, Jatuphorn Wootthikanokkhan, Nonsee Nimitsiriwat, Thannarasmi Khunsriya Samerpak, Nutthapon Wongyao
The Effects of Sulfonated Graphene Oxides (sGO) on Ion Conductivity and Permeability of the Vanadium Redox Flow Batteries Membranes Based on Sulfonated Poly(Ether Ether Ketone) Composite
Narumon Seeponkai1,3,a*, Thannarasmi Khunsriya Samerpak2,b,
Nonsee Nimitsiriwat2,3,c, Jatuphorn Wootthikanokkhan2,3,d,
Nutthapon Wongyao4,e
1Division of Materials Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand
2School of Energy Environment and Materials, King Mongkut’s University of Technology Thonburi (KMUTT), Bangkok 10140, Thailand
3Nanotec-KMUTT Center of Excellence on Hybrid Nanomaterials for Alternative Energy (HyNAE), Bangkok 10140, Thailand
4Department of Chemistry Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi (KMUTT), Bangkok 10140, Thailand
a*Puy_namon@hotmail.com, bPhapada.k@gmail.com, cnonsee.nim@kmutt.ac.th, djatuphorn.woo@kmutt.ac.th, eW_Nutthapon@hotmail.com
Keywords: Graphene oxide, poly(ether ether
This is because, functionalized the GO with sulfanilic acid (see fig. 1) might induce a replacement of sp2 carbons with sp3 carbons, resulting in a higher band gap of sGO structure [24].
This could be ascribed to the fact that the modified sulfonic group on GO structure is inherently hydrophilic.
This is because, functionalized the GO with sulfanilic acid (see fig. 1) might induce a replacement of sp2 carbons with sp3 carbons, resulting in a higher band gap of sGO structure [24].
This could be ascribed to the fact that the modified sulfonic group on GO structure is inherently hydrophilic.
Online since: August 2018
Authors: Nurul Aimi Ghazali, Arina Sauki, Noor Fitrah Abu Bakar, Siti Humaira Naqiah Azmi, Wan Asma Wan Ibrahim
Lignin molecular structure composes of mostly aromatic rings having various branching.
It can be concluded that the extracted lignin with the lowest pH value has the greatest thermal stability due to the lowest weight loss (39.43%) as compared to other pH conditions. 55-61 wt% of all lignin samples still remain unvolatized at temperature 600ºC due to the formation of highly condensed aromatic structure.
Journal of Applied Chemistry, 8(8 Ver 1), pp 70-73
It can be concluded that the extracted lignin with the lowest pH value has the greatest thermal stability due to the lowest weight loss (39.43%) as compared to other pH conditions. 55-61 wt% of all lignin samples still remain unvolatized at temperature 600ºC due to the formation of highly condensed aromatic structure.
Journal of Applied Chemistry, 8(8 Ver 1), pp 70-73
Online since: June 2019
Authors: Guntram Wagner, Daisy Nestler, Erik Päßler, Michaela Sommer, Jonas Stiller, Husam Ahmad, Lothar Kroll, Fabian Kempe, Hendrik Wätzig
Modification of the Thermoset Injection Moulding Process for Shaping to Increase the Fibre Length in C/C-SiC Ceramics Produced by the LSI Process
Jonas Stiller1,a*, Daisy Nestler1,b, Erik Päßler1,c, Fabian Kempe2,d,
Hendrik Wätzig1,e, Husam Ahmad3,f, Lothar Kroll1,g, Michael Sommer2,h, Guntram Wagner3,i
1Department of Lightweight Structures / Polymer Technology, Chemnitz University of Technology, 09107 Chemnitz, Germany
2Department of Polymer Chemistry, Chemnitz University of Technology, 09107 Chemnitz, Germany
3Department of Composites and Material Compounds, Chemnitz University of Technology, 09107 Chemnitz, Germany
ajonas.stiller@mb.tu-chemnitz.de, bdaisy.nestler@mb.tu-chemnitz.de,
cerik.paessler@mb.tu-chemnitz.de, dFabian.kempe@chemie.tu-chemnitz.de, eHendrik.waetzig@mb.tu-chemnitz.de, fhusam.ahmad@mb.tu-chemnitz.de,
glothar.kroll@mb.tu-chemnitz.de, hmichael.sommer@chemie.tu-chemnitz.de, iguntram.wagner@mb.tu-chemnitz.de
Keywords: Thermoset injection moulding, Fibre length
The production of CFRP structures can be carried out by conventional processes such as hot pressing, resin-transfer moulding or hand lamination [3,4].
The production of CFRP structures can be carried out by conventional processes such as hot pressing, resin-transfer moulding or hand lamination [3,4].
Online since: January 2019
Authors: Xin Liu, Wei Xiang, Ming Zhu Xiao, Zhi Bin Zeng, Shou Liang Hu, Yue Fang Li
More significant declines of Tg[5], thermal stability[6], as well as mechanical strength[7] have been reported for epoxies subjected to gamma irradiations with higher energies, the deterioration thresholds of which depend on the chemical structures of the materials.
X-ray photoelectron spectroscopy (XPS) was employed to characterize the surface chemistry of the epoxies.
Li, Effect of gamma irradiation on the mechanical behavior, thermal properties and structure of epoxy/glass-fiber composite.
X-ray photoelectron spectroscopy (XPS) was employed to characterize the surface chemistry of the epoxies.
Li, Effect of gamma irradiation on the mechanical behavior, thermal properties and structure of epoxy/glass-fiber composite.
Online since: June 2020
Authors: Phuong Minh Ngo, Quang Minh Do, Hoc Thang Nguyen
Because energy of microwaves interacted with water molecules and then it was transformed into heat, the water evaporates very quickly and the speed of rearrangement of structure of geopolymers increases.
This decreased the sizes of the porous structures and shrunk the samples in the same mass.
Davidovits, Geopolymer Chemistry and Application, 3rd ed., Ins.
This decreased the sizes of the porous structures and shrunk the samples in the same mass.
Davidovits, Geopolymer Chemistry and Application, 3rd ed., Ins.
Online since: February 2021
Authors: Rudeerat Suntako, Orawan Chunhachart
This high purity and organized structure provide BC with high crystallinity, thermal stability and mechanical strength [1].
FTIR spectra was used to examine the specific functional groups and deduce the different structure of BC.
Isayev, in Chemistry, Manufacture and Applications of Natural Rubber, eds.
FTIR spectra was used to examine the specific functional groups and deduce the different structure of BC.
Isayev, in Chemistry, Manufacture and Applications of Natural Rubber, eds.