Methods of Modıfıcatıon of Used Polyolephınes

After aging, LDIР polyethylene was modified from local raw materials, and 80% of the original characteristics of LDIР polyethylene were restored. As a result of modification of the complex properties of LDIR by zeolite and midwife, enthusiasm is observed. It was determined that per 100 mass parts (wt.h) of LDIR leaving the operation when modified with a functional group - 15-20 wt.h., fillers - 6-8 wt.h. zeolite and 20-25 wt. including shell rock and to some extent it is possible to restore the basic properties of LDIR in certain optimal quantities.

Methods of Modıfıcatıon of Used Polyolephınes

After aging, LDIР polyethylene was modified from local raw materials, and 80% of the original characteristics of LDIР polyethylene were restored. As a result of modification of the complex properties of LDIR by zeolite and midwife, enthusiasm is observed. It was determined that per 100 mass parts (wt.h) of LDIR leaving the operation when modified with a functional group – 15-20 wt.h., fillers – 6-8 wt.h. zeolite and 20-25 wt. including shell rock and to some extent it is possible to restore the basic properties of LDIR in certain optimal quantities.

Ferrous Complexes with Bis (Meo) in Α-Substituted Tris (Pyridin-2-Ylmethyl) Amine Ligands: Effect of the Bis (Meo) in Α- Substituents in Dioxygen Activation and Biomimetic Reactivity

This report describes how the coordination of FeCl2 with tris(pyridin-2-ylmethyl)amine (TPA) ligands offers the possibilty to activate the molecular dioxygen in biomimetic processes. . It includes all procedures taken to the case for major oxidation reactions carried out in Nature under particular conditions. The aim of the this paper is to present the outcome of a thorough study for complex coordinations with ligands substituted by groups known as electron donors. It demonstrates how ligands with methoxy substituents are likely to be demethylated, and therefore providing entities potentially useful in synthesis. Targeting in modulating the electronic properties at the metal center, a new type of ligand (MeO)2TPA has been prepared and the complex of (MeO)2TPAFeCl2 has been studied by uv-visble ; 1H RMN paramagnatic and conductometry. The effect of (MeO) group in α-substituted on the structure as well as the effect of substitution on the oxygenation of the complex has been verified. Afterwards, the reactivity of the complex towards molecular dioxygen in absence of substrat is checked by uv-visble, 1H RMN paramagnatic and radiocristallography. As well, the reactivity in presence of substrat is tested.

Durability Experiences on the Traditional and SCM Founded Blended Concrete

Concrete might be the maximum substantially used construction material in the global with approximately six billion tones being produced each year. It is best subsequent to water in phrases of in keeping with-capita consumption. However, environmental sustainability is at stake both in terms of damage due to the extraction of raw material and CO2 emission all through cement manufacture. This brought pressures on researchers for the discount of cement intake by means of partial substitute of cement by using supplementary materials. These materials may be obviously happening, industrial wastes or by way of-products that are less energy extensive. Fly ash and Ground Granulated Burnt Slag (GGBS) are selected specifically based totally on the standards of fee and their long lasting qualities., Not best this, Environmental pollution also can be decreased to a point due to the fact the emission of dangerous gases like carbon monoxide & carbon dioxide are very restricted. These substances (referred to as pozzalonas) when combined with calcium hydroxide, reveals cementitious compositions. Most commonly used pozzalonas are fly ash, silica fume, met kaolin, ground granulated blast furnace slag (GGBS). This wishes to look at the admixtures performance whilst combined with concrete so as to ensure a discounted existence cycle fee. The present research consists of three phases and reports the specializes in investigating characteristics of M35grade concrete .In the 1st phase the behavior of standard and SCM concrete (7.5%FA and 7.5%GGBS) of M35 grade specimens with different percentages of chemical admixtures curing with acids such as HCL. 2nd phase the same grade of specimens curing with Alkaline such as NaOH and in the 3rd phase the same grade of specimens curing with sulphate solution MgSO4 and finally assess the losses of mechanical properties and durability considerations of the concrete due to these conditions were reported.

The Electronics Industry and Their Chemical Effects in the Environment of Arid Regions of Northwest of Mexico

The electronics industry is very important in the world economy, because is one of more dynamic activities, due to a great quantity and different electronic products manufactured and used in a lot quotidian operations. This type of industry has strongly attracted attention to the environmental authorities in the recent 10 years, due to the deterioration that causes to the ecosystems. The electronics industry generates a lot liquid chemical waste, which are thrown into soils and aquifers that are close to companies. The interest of the relation of environmental problems and the electronics industry has manifested with more frequency, from 20 years ago, especially in countries that regulate strictly to care the ecosystems, being some countries of Europe, United States and Japan. The lack of control in certain liquid wastes from activities of the electronics industry, that are discharged into areas next to companies or by the drainage systems has caused a great deterioration of the ecosystems. This occurs with some companies installed in the Mexicali city dedicated to manufacture electronic products. This city is located in the northwest of Mexico that is a border city with the United States of America (USA), where some soils and aquifers are been damaged for some years. This has negative effects in the population too, by the generation and proliferation of respiratory diseases (RD), being a beginning of some environmental and health crisis, particularly in areas adjacent to these companies. This study examined the environmental problems of the industry electronics in Mexicali, and the increase of persons that suffer of RD, being principally in the winter periods. The analysis was made based in two steps, being the first to evaluate the pollution of soil and water levels with the principal climatic factors as relative humidity (RH) and temperature variations around two companies of the electronics sector to be correlated with the RD levels. The second step was to analyze the pH of soil and water, around the three companies evaluated in this city and to elaborate an evaluation of soils with the Scanning Electron Microscopy (SEM) technique to know their level of deterioration. The study was made from 2018 to 2019.

Ferrous Complexes with Bis Meo in Α Substituted Tris Pyridin 2 Ylmethyl Amine Ligands Effect of the Bis Meo in Α Substituents in Dioxygen Activation and Biomimetic Reactivity

This report describes how the coordination of FeCl2 with tris(pyridin-2-ylmethyl)amine (TPA) ligands offers the possibilty to activate the molecular dioxygen in biomimetic processes. . It includes all procedures taken to the case for major oxidation reactions carried out in Nature under particular conditions. The aim of the this paper is to present the outcome of a thorough study for complex coordinations with ligands substituted by groups known as electron donors. It demonstrates how ligands with methoxy substituents are likely to be demethylated, and therefore providing entities potentially useful in synthesis. Targeting in modulating the electronic properties at the metal center, a new type of ligand (MeO)2TPA has been prepared and the complex of (MeO)2TPAFeCl2 has been studied by uv-visble ; 1H RMN paramagnatic and conductometry. The effect of (MeO) group in α-substituted on the structure as well as the effect of substitution on the oxygenation of the complex has been verified. Afterwards, the reactivity of the complex towards molecular dioxygen in absence of substrat is checked by uvvisble, 1H RMN paramagnatic and radiocristallography. As well, the reactivity in presence of substrat is tested.

Thermodinamics and Mutual Distribution of Macromolecules in the Systems: Chlorine Chlorocontaining Polymers

In given work a scientific base compatibility of polymers, produced by industry have been studied by revealing of thermodynamically regularities of polymer mixtures. The most significant thermodynamic regularities of the mixtures of polyolefin , produced by industry and heterochained polymers have been revealed and on this base the scientific bases of their compatibility have been developed for creation of multicomponent compositional materials with given complex of operating properties. Key words: polymer-polymer mixtures, chlorinated polyethylene (CPE), polymethylmetaacrylate (PMMA), polyethylene of low density (PELD), chlorcarboxylated polyethylene of low density (CCPE) chlorinated PELD (CPE), polyvinyl chloride (PVC), criteria of compatibility, chlorination, upper and lower critical temperature, specific holding of volume, Qibbs mixing energy, parameter of solubility, distribution of macromolecules, chlorine-chlorocontaining polymers, polar groups, thermodynamically compatibility, sorbate, gas-carrier.