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In addition, the structure and properties of BC were determined using SEM, FTIR, DSC and XRD.
In addition, this study determined the structure and properties of these BC.
Overall, the fermentation of rice washing showed a small influence on BC structure as indicated by DSC, FTIR, and XRD technique.
Brown, Cellulose structure and biosynthesis: What is in store for the 21st century, J.
Bacterial cellulose production by Komagataeibacter nataicola using water from washing rice as substrate and optimization of culture conditions Paper presented at the Pure and Applied Chemistry International Conference 2018 (PACCON 2018), Thailand

Zeta potential, particle size analysis, and SEM images showed that the effect resulted from the improved colloidal stability, closer packing of the particles, and the formation of a dense filter cake structure.
The rigid cyclic structure of NVP can resist molecular chain breakage at high temperature and significantly enhance the thermodynamic stability of the system at 180 ℃ and above[10].
This molecular design strategy enables the synthesized polymers to synergistically achieve filter cake pore structure modulation and long-lasting stability in high temperature environments[11].
In this study, we systematically analyze the interfacial regulation mechanism by comparing the fluid loss reduction performance and the evolution of filter cake structure of four types of nanoparticles, namely, hydrophilic SiO2, hydrophobic SiO2, CaCO3, and TiO2, to provide a theoretical basis for the rational design of nanomaterials in drilling fluids[17].
Oilfield Chemistry 39 (2022), p. 202-208

Hygric Transport Parameters of Several Kinds of Sandstones Dana Koňákováa, Monika Čáchováb, Martin Keppertc, Eva Vejmelkovád, Robert Černýe Department of Materials Engineering and Chemistry, Czech Technical University in Prague - Faculty of Civil Engineering, Thákurova 7, 166 29 Praha 6, Czech Republic adana.konakova@fsv.cvut.cz,bmonika.cachova@fsv.cvut.cz, c martin.keppert@fsv.cvut.cz, deva.vejmelkova@fsv.cvut.cz, ecernyr@fsv.cvut.cz Keywords: Sandstone; Open porosity; Pore size distribution; Water vapour diffusion resistance factor; Water absorption coefficient Abstract.
Since a content of water (at whatever state) could lead to degradation processes of materials whether by phase changes or by chemical reaction (with any component of water contained), it is important to know an amount of water which can get into the pore structure of a material.
From the achieved results,it is obvious that the main influence on hygric transport characteristics has the open porosity, in particular the pore structure.The higher porosity is the higher amount of water can be transported through the sandstones.
To be able to predict an amount of water which material should contain it is necessary to know pore structure as well as hygric transport characteristic.
Second measurement was focused on determination of the pore structure, it was applied a mercury porosimetry, and the difference in a pore size distributions was approved.

After melt treatment using the study combinations, the alloy structure becomes partially modified, which increases the mechanical properties of silumin.
During melt treatment with flux, sodium fluoride decomposes and sodium is transferred to the melt, thus modifying the silumin structure during alloy solidification.
Previous studies showed that barium has an active effect of modification on the silumin structure and retains the effect of modification during casting for at least 5 hours [6].
In case of melt treatment with combined fluoride salts, mechanical properties of the alloy increase, which can be explained by the combined effect of surface-active elements on the alloy structure.
Goroshchenko, Chemistry of Titanium, Naukova Dumka, Kiev, 1970

IR spectroscopy and mechanical property evaluations were carried out to elucidate the structure-property relationship of the polymer.
The chemical structure appears in figure-2.
Structure of Castor Oil [21] HTPB is a synthetic prepolymer formed by free radical polymerization of 1,3-butadiene.
[21] Mihail I., Chemistry and Technology of Polyols for Polyurethanes, Rapra Technology, 2005.
[22] Shih-Liang H And Juin-Yih L., Structure-Tensile Properties of Polyurethanes, Eur.

The pores in the structure of the knit structure have different sizes: pores in the fibre (irregularities of cross section), yarns (between fibres) and knitted structure (between yarns).
It was also observed that hydrophobic wet knit structures transfer greater amounts of water to dry knit structures (hydrophilic and hydrophobic) than hydrophilic wet fibre knit structures.
Liquid transfer results for cotton (a) and polyester (b) knit structures.
Regarding the liquid transfer, it is minimal when dry hydrophobic knit structures are superposed on wet hydrophilic knit structures.
[19] Holmberg, K., "Handbook of Applied Surface a Colloid Chemistry - Volume 2", John Wiley & Sons, 2002

Heterogeneous catalysts are often prepared by wet chemistry such as precipitation, co-precipitation, sol-gel or hydrolysis process.
The nature of metallic species in the structure of the support depends on the concentration and the temperature of the thermal treatment.
Peak at 28,25° and 28,3° refer zirconia and exhibit monoclinic phase structure, after heat treatment at 900 ºC. 0 2 04 06 08 01 0 0 400 600 800 1000 1200 1400 1600 1800 28,335,4 45,5 50,2 60,162,9 71,2 82,6 Intensity 2 θ (degree) (a) 02 04 06 08 0 0 100 200 300 400 500 600 28,25 31,55 40,8 50,2 55,35 62,9 75,5 Intensity 2 θ (degree) (b) Fig. 3: X-ray diffraction pattern of microspheres calcined at temperature 900 ºC for 4 h.

It is made from expandable graphite which is prepared by the methods of electrochemistry and chemistry oxidation [2-5].
FTIR, SEM and Laser Particle Size Analyzer are used characterize the properties and structure of the samples synthesized.
From the microscopic point of view, the micron expanded graphite has a network-like structure of holes.

Synthesis and Photovoltaic Properties of Fluorene-Based Copolymers with Thiophene Heterocycle on the Side Chain Qiong Hou1, a, Xianghua Zeng2,b, Xin Xu3,c Ting Guo4,d, Hongyu Zhen5,e and Guolong Li6,f 1,2,3School of Chemistry and Environment, South China Normal University Guangzhou, China 510006 4Institute of Polymer Optoelectrionic Material and Devices,South China University of Technology Guangzhou, China 510640 5,6State key laboratory of Modern Optical Instrumentation, Zhejiang University Hangzhou, China 310027 ahouqiong@scnu.edu.cn, bsarnwa@163.com,c ryan0849@sina.com dgt1011@163.com, ehongyuzhen@zju.edu.cn, fguolongli@zju.edu.cn Keywords: Fluorene, Thiophene, Side chain, Solar cells Abstract.
The devices have the general structure ITO/PEDOT:PSS/polymer: fullerene/Al.
J-V characteristics of devices with a structure of ITO/PEDOT:PSS/ copolymer:PCBM (1:2, w/w) /Al under the illumination of an AM 1.5 G solar simulator(800 W m−2).

The required matrix structure contains ³{TTP}40 80% ferrite fraction, <2.0% carbide and <1.0% phosphide eutectic.
Inoculation: Control of the alloy (chemistry, size, etc), timely additions of the inoculant.
Chemical composition (%) Mechanical property Metallurgical structure# C Si## Mn P S## C.E.V.