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Online since: August 2015
Authors: Nut Churinthorn, Jitladda Sakdapipanich, Adun Nimpaiboon, Chee Cheong Ho
Effect of Particle Sizes on Film Formation Behavior of
Hevea brasiliensis Natural Rubber Latex
Nut Churinthorn1, a, Adun Nimpaiboon2, b, Jitladda Sakdapipanich1, 2, c*,
and Chee Cheong Ho3,d
1Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
2Institute of Molecular Biosciences, Mahidol University, Salaya Campus, Nakornpathom 73170, Thailand
3Faculty of Science, Engineering and Technology, University of Tunku Abdul Rahman,
Jalan University, Bandar Barat, 31900 Kampar, Perak, Malaysia
anutchurin@me.com, bjoey_jo999@hotmail.com, cjitladda.sak@mahidol.ac.th, dcchoho2001@yahoo.com
Keywords: Natural rubber, Film formation, Particle size, Large rubber particle, Small rubber particle.
It was reported that NR latex is composed of small rubber particles (SRP) and large rubber particles (LRP) having different chemical structures.
The chemical structure of LRP is branched molecule, while that of SRP is linear molecule [3-6].
It was reported that NR latex is composed of small rubber particles (SRP) and large rubber particles (LRP) having different chemical structures.
The chemical structure of LRP is branched molecule, while that of SRP is linear molecule [3-6].
Online since: June 2012
Authors: Dan Yu Jiang, Qiang Li, Cai Xia Li, Peng Fei Zhu, Qing Lv
Fabrication of Oxide Compound Nano-films Materials by LBL Self-assembly Technology
Li Caixia1,a, Zhu Pengfei1, Jiang Danyu2, Lv Qing 1, Li Qiang1,b*
1Department of Chemistry, East China Normal University, Shanghai 200062, China
2Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
a52100606005@ecnu.cn, bqli@chem.ecnu.edu.cn
Keywords: TaO2-; CoO2-; nano-films; LBL self-assembly.
With the emergence of host-guest chemistry, the relative research has been more in-depth, especially in many organic/inorganic composite systems.
Based on some specific structure between organic molecules and inorganic compounds, self-assembly fabrication was formed by a certain interaction, so as to achieve a kind of specific function different from a simple organic or inorganic molecule.
And by changing the nature of the object level defects, the structure of nano-films does not changed.
With the emergence of host-guest chemistry, the relative research has been more in-depth, especially in many organic/inorganic composite systems.
Based on some specific structure between organic molecules and inorganic compounds, self-assembly fabrication was formed by a certain interaction, so as to achieve a kind of specific function different from a simple organic or inorganic molecule.
And by changing the nature of the object level defects, the structure of nano-films does not changed.
Online since: June 2008
Authors: C.H. Huang, Fu Lin Chen, I Wen Sun, H. Paul Wang
Huang
2
1
Department of Chemistry, National Cheng Kung University., Tainan City, 701 Taiwan
2
Department of Environmental Engineering, National Cheng Kung University, Tainan City, 701
Taiwan
3
Sustainable Environment Research Center, National Cheng Kung University, Tainan City, 701
Taiwan
*Corresponding author.
It seems that structure of carbon in the shell may be disturbed in the RTIL, which leads to oxidation of surface copper with residual oxygen in the RTIL.
Structure parameters of copper in the Cu@C (0.08%) dispersed [bmim][PF6] Size (nm) Shell Bond distance (Å) Coordination number Dybe-weller Factor (σ2) 7 Cu-Cu 2.533 6.2 0.0079 14 Cu-Cu 2.535 6.3 0.0081 20 Cu-Cu 2.530 8.7 0.0075 Conclusion In the presence of Cu@C nanoparticles (0.08%), the diffusion coefficient of cations in the RTIL is increased by 40% and decreased at elevated temperatures (e.g., T= 310-340 K).
Yanagida, Journal of Photochemistry and Photobiology A: Chemistry, 164, 97 (2004) [11] L.
It seems that structure of carbon in the shell may be disturbed in the RTIL, which leads to oxidation of surface copper with residual oxygen in the RTIL.
Structure parameters of copper in the Cu@C (0.08%) dispersed [bmim][PF6] Size (nm) Shell Bond distance (Å) Coordination number Dybe-weller Factor (σ2) 7 Cu-Cu 2.533 6.2 0.0079 14 Cu-Cu 2.535 6.3 0.0081 20 Cu-Cu 2.530 8.7 0.0075 Conclusion In the presence of Cu@C nanoparticles (0.08%), the diffusion coefficient of cations in the RTIL is increased by 40% and decreased at elevated temperatures (e.g., T= 310-340 K).
Yanagida, Journal of Photochemistry and Photobiology A: Chemistry, 164, 97 (2004) [11] L.
Online since: May 2014
Authors: Da Guang Li, Zeng Cai Li, Ye Guo
Many studies have shown that wax [1] under the high temperature can make asphalt viscosity is reduced, and at a lower temperature due to the formation of wax crystal structure makes more viscous asphalt, it is not easy to flow.
(5) Ultrasonic processing technology, this method can be generated in the solution of local high temperature and high pressure, so as to destroy the asphaltene aggregate structure, reduce the viscosity of heavy oil.
Heavy oil chemistry.
Oilfield chemistry, 2004, 21 (4).
(5) Ultrasonic processing technology, this method can be generated in the solution of local high temperature and high pressure, so as to destroy the asphaltene aggregate structure, reduce the viscosity of heavy oil.
Heavy oil chemistry.
Oilfield chemistry, 2004, 21 (4).
Online since: September 2014
Authors: Min Gong, Hong Wang, Di Liu, En Long Huang, Long Wang
Synthesis, Characterization and Anticorrosion Performances
Study of Different Acid Doping Polyaniline
Hong Wang1, a, Enlong Huang1,b, min Gong1,c , Di Liu2,d and Long Wang1,e
1 Key Laboratory of Material Corrosion & Protection of Sichuan Province, Department of Materials & Chemical Engineering, Sichuan University of Science & Engineering, Zigong, 643000, China
2College of Chemistry Chemistry, Jilin University, Changchun 130012, China;
ajluhong999@163.com, b840440365@qq.com, cgongmin@suse.edu.cn, dliudi_student@yahoo.cn, ewangzhenlong2009@163.com
Keywords: Corrosion resistance, Doping PANI, Epoxy, Steel
Abstract.
The effect of acid on the morphology and structure the composites were investigated with SEM, FTIR and UV–Visible spectral techniques.
Moreover, to study the insuences of acid on the morphology, structure, and properties of the products, polyaniline doped with H3PO4 and HCl was prepared under the same conditions.
The effect of acid on the morphology and structure the composites were investigated with SEM, FTIR and UV–Visible spectral techniques.
Moreover, to study the insuences of acid on the morphology, structure, and properties of the products, polyaniline doped with H3PO4 and HCl was prepared under the same conditions.
Online since: May 2014
Authors: Na Peng, Kai Feng Wang, Guo Guang Liu, Lin Ze Zeng, Han Wei Yan, Pei Qin Zhang
Role of complexation in propranolol sorption to clay minerals in the presence of fulvic and humic acid
Na Peng1, 2, a, Kaifeng Wang2, Guoguang Liu1, b, *, Linze Zeng2,
Hanwei Yan2, Peiqin Zhang2
1Faculty of Environmental Science and Technology, Guangdong University of Technology, China
2Faculty of Chemistry and Environment, Jiaying University, China
apengna12@163.com, bliugg@gdut.edu.cn
Keywords: Propranolol, sorption, fulvic acid, humic acid, complexation, clay
Abstract.
The distinct differences in the structures of the two minerals resulted in the different sorption capacities of PRO on them.
As a 2:1 type mineral, montmorillonite showed stratified structure with the higher surface area and larger cation exchangeable capacity.
Journal of Radioanalytical and Nuclear Chemistry, 273(2007): 227-233
The distinct differences in the structures of the two minerals resulted in the different sorption capacities of PRO on them.
As a 2:1 type mineral, montmorillonite showed stratified structure with the higher surface area and larger cation exchangeable capacity.
Journal of Radioanalytical and Nuclear Chemistry, 273(2007): 227-233
Online since: May 2015
Authors: Woo Seok Kim, Chan Jeoung, Soo Bong Park
But another method to predict structure response is needed due to needing lots of costs and time.
Acknowledgement This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (NRF-2012R1A1A044378) References [1] Abdel-Ghaffar, A.M: Vertical Vibration Analysis of Sus-pension Bridges, Journal of Structure, vol. 106, No.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)
Acknowledgement This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (NRF-2012R1A1A044378) References [1] Abdel-Ghaffar, A.M: Vertical Vibration Analysis of Sus-pension Bridges, Journal of Structure, vol. 106, No.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)
Online since: February 2014
Authors: Zong Qiang Zhu, Shuang Cao, Yi Nian Zhu, Yan Hua Huang, Bin Huang, Li Wei Xie
Wood cells possess complicated porous structure; it has numerous particular properties for its unique structure of high modulus and strength, well tenacity and elasticity, and the capacity to resist damage [8].
[3] Caiyun Han, Liu Zhang, Zhaohua Zou: Environmental Chemistry. (2011), p. 517-523.
Materials Chemistry and Physics. (1999), p. 64-68
[3] Caiyun Han, Liu Zhang, Zhaohua Zou: Environmental Chemistry. (2011), p. 517-523.
Materials Chemistry and Physics. (1999), p. 64-68
Online since: April 2014
Authors: Yong Fu, Zu Qiang Xiong
On the other hand, SO42- result in the change of structure and composition of CSH, and is adsorbed by CSH, and accelerate the formation of CSH.
Geopolymer chemistry and application [M].
Industrial & Engineering Chemistry Research, 2002, 41(17):4242-4251
The influence of calcium content on the structure and thermal performance of fly ash based geopolymers [J].
Geopolymer chemistry and application [M].
Industrial & Engineering Chemistry Research, 2002, 41(17):4242-4251
The influence of calcium content on the structure and thermal performance of fly ash based geopolymers [J].
Online since: April 2014
Authors: Jun Zhang, Jia Jun Si, Kuan Jun Zhu, Sheng Chun Liu
Engineering plastics has become an indispensable structure plastics in many trades, such as national economy development, the building up of national defense, power construction, scientific and technological advance, daily life.
Because of the design ability and machinability of engineering plastics, processing products owns favorable characteristic, such as mechanics, chemistry and electrical characteristic.
(1) The quality of it is light, which can lighten the quality of the engineering structure; (2) The chemistry of it is stable, which can avoid corrode and rustiness; (3) The electrical insulation of it is favorable; (4) It owns favorable abrasion resistant, anti- attrition and self-lubrication; (5) It owns favorable specific strength and modulus; (6) It owns favorable bondacust, shock absorption, resistance to shock, fatigue durability; (7) The price of raw and processed material is lower, the resin can be added in it; (8) The machinability is favorable.
Because of the design ability and machinability of engineering plastics, processing products owns favorable characteristic, such as mechanics, chemistry and electrical characteristic.
(1) The quality of it is light, which can lighten the quality of the engineering structure; (2) The chemistry of it is stable, which can avoid corrode and rustiness; (3) The electrical insulation of it is favorable; (4) It owns favorable abrasion resistant, anti- attrition and self-lubrication; (5) It owns favorable specific strength and modulus; (6) It owns favorable bondacust, shock absorption, resistance to shock, fatigue durability; (7) The price of raw and processed material is lower, the resin can be added in it; (8) The machinability is favorable.