Search results

Preparation of borosilicate xerogel and research on its mineralization Chen Wang 1, a, Yadong Li 2,a and Guqiao Ding 3,b a College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China b State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, People’s Republic of China 1godman605@163.com, 2 liyadong@suda.edu.cn, 3 gqding@mail.sim.ac.cn Keywords: Bioactive wet gel; Conversion mechanism; Ca-B-P precipitations; Characterization.
The first step in the reaction is expected to be the dissolution of ions such as Si2+, Ca2+, B3+ from a xerogel into the solution (Fig. 4a), leading to a break-up of the Si-O-Si or Si-O-B network of the xerogel, also adding boron may destroy the original network structure.

As shown, good definition of the structure on LTCC was observed after sintering.
Dorner: Materials Chemistry & Physics, Vol.87 (2004), pp.173

Synthesis of Ba1-XSrXTiO3 powders by KOH-KNO3molten salt method Tomohiko Kishiki, Masashi Higuchi, Takashi Asaka, Yasuo Azuma and Keiichi Katayama Department of Industrial Chemistry, Graduate School of Engineering, Tokai University, 1117, Kitakaname, Hiratsuka-city, Kanagawa, 259-1292, Japan Keywords: perovskite, Ba1-XSrXTiO3, molten salt method ABSTRACT The synthesis of Ba0.5Sr0.5TiO3 (BST) powders was attempted using KOH-KNO3 molten salt.
The shape and aggregation state of the single-phase BST powder changed according to the heating temperature and the molten salt composition. 1 INTRODUCTION Barium strontium titanate (Ba1-XSrXTiO3：hereunder referred to as BST), which has a typical perovskite-type structure, shows excellent electrical properties similar to barium titanate (BaTiO3).

Specific immobilization of streptavidin on mixed self-assembled monolayers as Mixing Ratio Jun Hyung Park1 , Buyngsu Park1 , Gu Huh 1 , Seunghyun Lee 1 , Hyunsook Kim1 , Il-Hoon Cho2 , Se-Hwan Paek 2 and Haiwon Lee1 * 1 Department of Chemistry, Hanyang University, Seoul 133-791, Korea 2 Program for Bio-Microsystem Technology, Korea University, Seoul 136-701, Korea E-mail address: haiwon@hanyang.ac.kr Keywords: Mixed self-assembled monolayer, Streptavidin immobilization, STM, AFM Abstract We report on the distribution of mixed self-assembled monolayers (SAMs) composed of biotinylated and diluent alkylthiolates for streptavidin immobilization.
Although the self-assembled monolayers (SAMs) of thiol derivatives have been studied about their structures, adsorption kinetics and surface properties on gold surface, the SAMs of one kinds of thiol material have several problems in use of anchoring layer due to entangling effect caused by high densities of surface functional groups leading to steric hindrances.

Reflectance of Min-U-Sil at 800-700 cm-1 Result and Discussion Freshly ground quartz (Min-u-Sil) has sharply defined 680 quintuplets because of the wellcrystallized structure (C.I. = 9.6).
Reflectance spectra of a) Min-U-Sil and b) crude lignitic fine ball clay The DRIFTS is becoming an important technique for studying the surface chemistry of high surface area powder.

HLC is water-soluble giant molecule protein and has a tri-helix structure, it is expressed by recombinant Escherichia coli BL21 containing human-like collagen cDNA [2].
Wang: Journal of Industrial and Engineering Chemistry (China) Vol. 752-754(2002), p. 53 [10] J.Q.

It is observed that the material presents the crystalline structure of the wurtzite.
[2] Maul J., Ullmanns's Encyclopedia of Industrial Chemistry. 6th Ed.; Wiley - VCH, 2002 [3] Chul Kim B. and Jae Lee S., Korea-Australia Rheol.

The structure of branched polymers of diallyl phthalate [J].
[7] Divakar, D.S.; Rao, K.N., Kinetics of polymerization of diallyl phthalate (DAP) by gamma-rays [J], Journal of Polymer Science, Polymer Chemistry Edition, 1975,13, (2): 295-308

Because the incorporation of CO32-, the structures of HAP occurres obvious distortion, crystallinity decreased, porosity, particles uniform and well dispersed, surface area and the effective surface activity increased, adsorption capacity to heavy metals stronger, which can solidfy water-soluble heavy metal ions better[1].
Li: Applied Chemistry.

Systhesis, Curing and Thermal Propertied of Boron-containing o-Cresol-Formaldehyde resin Jungang Gao*a, Haojie Linb, Yingying Mac College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China agaojg@hbu.edu.cn, blinhaojie1818@163.com, cMayingying29@163.com Keywords: Boron-containing o-cresol-formaldehyde resin; systhesis; thermal property Abstract: The boron-containing o-cresol-formaldehyde resin (BoCFR) with different amounts of boron was synthesized from o-cresol, boric acid and formaldehyde solution.
The higher Tp, the higher Tg, which depends on the curing conditions, molecular structure, cross-linked degree, cure temperature and time [7].