Search results

China 2 Center for Degradable and Flame-Retardant Polymeric Materials; Key Laboratory of Green Chemistry and Technology (MoE), College of Chemistry, Sichuan University, Chengdu 610064, China aJiangzhu415@163.com, bxiuliwang1@163.com Keywords: Cellulose diacetate; P-dioxanone; Graft copolymer; Mechanical property Abstract.
Poly(1,4-dioxan-2-one), PPDO, is one of aliphatic polyesters with numerous ester bonds and ether bonds in the molecular structure, and has been used widely as a biodegradable suture material due to its good tenacity and knotting properties [20].
The authors also acknowledge the Center for Degradable and Flame-Retardant Polymeric Materials and the Key Laboratory of Green Chemistry and Technology (MoE) of Sichuan University for the supplement of PDO monomer.

Synthesis and Characterization of Li-Ti-O Nano-composites and Their Doped BaTiO3 Based X7R-type Ceramics Qing Zhanga, Ruiyuan Niub, Min Wangc, Bin Cuid,*, Zhuguo Change Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education), Shaanxi Key Laboratory of Physico-Inorganic Chemistry, School of Chemistry & Materials Science, Northwest University, Xi’an, 710069, P R China azhangqing1321@163.com, bnrynrj@126.com, cwangminv1@163.com, dcuibin@nwu.edu.cn, echang1960zg1960@163.com Keywords: Nano-composites; Sol-gel method; BaTiO3 ceramics; X7R; Dielectric properties Abstract.
The crystal structures of the BaTiO3 powders and ceramics were determined by means of X-ray diffraction (XRD, Bruker D8, Germany).

Plasma treatment such as plasma surface modification is a promising technique because of its ability to modify the chemistry and morphology of a surface due to the presence of complex mixtures of ions, electrons, atoms and radicals.
Wettability of anahaw leaf can be studied further as there was no established trend based on the experiments which may be due to its surface structure.
Furthermore, this research can be extended by studying the surface morphology and surface chemistry of the samples through the scanning electron microscopy (SEM) and fourier transform infrared spectroscopy (FTIR) analysis.
Piskin: Turkish Journal of Chemistry 24 (2000), p. 275-285 [7] R.

Removal of aluminum sacrificial layer was achieved through plasma etching and final release of the structure through critical point dryer (CPD).
Each nanowire chip would produce a distinctive optical response due to their unique surface chemistry, enabling accurate fingerprinting and determination of the analyte.
Since actual surface chemistry of the sensing chip, Si,j, is known beforehand the actual identity of the unknown analyte can be easily ascertained.
The sensing chemistry utilizing ZnO nanowires was determined independently.

Chitosan has a repeating structure of b-(1,4)-linked 2-amino-2-deoxy-D-glucan.
The authors express the sincere gratitude to the Key Subject of Physical Chemistry of Metallurgy of Xi’an University of Architecture and Technology.
Environmental Chemistry. 2003,22 (6), p. 601-604
Chinese Journal of Inorganic Chemistry. 2000,16 (3), p. 385-394

Mickiewicza 30, 30-059 Kraków, Poland 3 University of Warsaw, Department of Chemistry, Pasteur 1, 02-093 Warsaw, Poland a elwira.czerska@polsl.pl, b pyda@agh.edu.pl, c nmos1@agh.edu.pl, d ahuczko@chem.uw.edu.pl, e adabrowska@chem.uw.edu.pl Keywords: two-step sintering, spark plasma sintering, ceramic matrix composites.
SiC whiskers were obtained at the Department of Chemistry of Warsaw University by SHS method according to the reaction: 2 Si + 2(˗CF2˗) ⟶ SiF4 + C + SiC (1) Fig. 1.
Zalud, Two-step sintering of oxide ceramics with various crystal structures, J.
Liu, Thermal stability of Ti3AlC2/Al2O3 composites in high vacuum, Materials Chemistry and Physics 104 (2007) 109-112.

Substantial achievements have been made in this field recently, which can be roughly classified into three strategies according to self-healing chemistry: (i) dicyclopentadiene(DCPD) healing system[3-6], based on the ROMP of DCPD and Grubbs’ catalyst or Tungsten Hexachloride catalyst, (ii) polydimethylsiloxane (PDMS) healing system [7-10], this system have two types, one is based on tin-catalyzed polycondensation of hydroxy end-functionalized poly(dimethyl siloxane) (HOPDMS) and poly(diethoxy siloxane) (PDES) using a di-n-butyltin dilaurate (DBTL) catalyst, another PDMS-based chemistry is the platinum-catalyzed hydrosilylation of vinyl terminated PDMS with a methylhydrosiloxane copolymer.
Self-healing of a high temperature cured epoxy using poly(dimethysiloxane) chemistry.
Preparation of chitosan nanoparticles with fissuaring structure by inverse miniemulsion cross linking method.

Characterization of Pt-doped WO3 Nanoparticles Synthesized by Flame Spray Pyrolysis Thanittha Samerjai1,a , Nittaya Tamaekong2,b and Sukon Phanichphant3,c* 1Nanoscience and Nanotechnology Program, Faculty of Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand 2Nanoscience Research Laboratory, Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand 3Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand a babymine_kiss@hotmail.com, bdoramon_koygy@hotmail.com, csphanichphant@yahoo.com Keywords: Flame spray pyrolysis (FSP); undoped WO3; Pt/WO3 nanoparticles Abstract: Undoped WO3 and WO3 nanoparticles doped with 0.25–1.0 wt.% Pt were successfully produced in a single step by flame spray pyrolysis (FSP) [1].
It can be clearly seen that P0–P1 samples are crystalline and all peaks can be well matched with the JCPDS file No.83-0950, which corresponds to the monoclinic structure of WO3.
The National Research University Project under Thailand’s Office of the Higher Education Commission, the Graduate School and Department of Chemistry, Faculty of Science, Chiang Mai University, Thailand and National Electronics and Computer Technology Center, Pathumthani, Thailand are gratefully acknowledged.
Decoste: World of Chemistry.

By adjusting the system PH value we can make the HPAM solution made up of distilled water and Feiyan Beach injected water freeze,but the formation of the gel is not uniform, presents the partial block structure; In addition, in the freezing range of pH values, the freezing time is shorter,this scene is not conducive to the operation,and the range of frozen PH is narrow, so that the site is not feasible to improve the performance of cross-linked by adjusting thePH value.
Oilfield Chemistry, Vol.16 (2) (1999) p. 149-152(in Chinese)
Oilfield Chemistry, Vol.12 (1) (1995) p. 88-94(in Chinese)
Oilfield Chemistry, Vol.15 (3) (1998) p. 241-243(in Chinese)

The crystal structure of all the sintered samples, determined by XRD, was mainly α-cordierite, having a small amount of spinel as second phase.
The structure and microstructure of the sintered materials were investigated by XRD and SEM, respectively.
The morphology and structure of the powders calcined at 800, 1000, and 1200o C were further investigated by transmission electron microscopy as shown in Fig. 4.
The structure of the sintered cordierite ceramics was studied by XRD as shown in Fig. 6.
Saha et al.: Materials Chemistry and Physics.