Polymers definition Polymers - high molecular weight compounds built from a large number of repetitive, elementary, or monomeric units.

Презентация:



Advertisements
Похожие презентации
Organic part of the soil. Contens: Organic matter of the soil. Modern concepts of humus formation. Composition and properties of humus. The importance.
Advertisements

Toine Dinnissen / March 27th 2007Page 1 NEO Chemical Seminar 2007 Cross-linking = Curing.
Electrolysis. In chemistry and manufacturing, electrolysis is a method of using a direct electric current (DC) to drive an otherwise non-spontaneous chemical.
University of Food Technologies, Department of Organic Chemistry and Microbiology, 26 Maritza Blvd., Plovdiv, Bulgaria address:
Chemists – biologists What can be done together? Supramolecular systems in chemistry and biology Tuapse, Septembre 27 – October 2, 2008 Marcel Hibert Laboratoire.
Bench Screening of Novel Anti-Wear Alternatives to ZDDP Victor Bakunin, Trade and Technical representative, CIS Moscow, Russia Cyril Migdal, Director,
Physico-chemical methods for obtaining nanocarbon composite polymeric materials with certain concentrations of nanoparticles.
Easily scalable method for the synthesis of large volumes GNP from cyclic hydrocarbons Aleksei Vozniakovskii, Aleksandr Vozniakovskii, Sergey Kidalov FGUP.
Food Vegetables VEGETABLES - root crops grown up on ridges, bulbous, sheet and some other plants. Korneplodnye vegetables, onions, sheet vegetables.
Uranium: How is it Mined? Has fulfilled: Muratkhanov Sunggat.
Definition of units in the statistical register of Rosstat Deputy Head of Department Elena Zarubina.
THERMAL MELTING OF VORTEX MOLECULES IN 2D BOSE-EINSTEIN CONDENSATES W. Pogosov and K. Machida Okayama University, Japan 1. Motivation 2. Model 3. Intershell.
Metabolism Why Study Metabolism? Classification of bacteria Oxygen Tolerance Biochemical reactions Acids, Ammonia, Gases Fermentation Products Food Products.
Genetics Genetics (from Ancient Greek γενετικός genetikos, "genitive" and that from γένεσις genesis, "origin"),[1][2][3] a discipline of biology, is the.
© 2005 Cisco Systems, Inc. All rights reserved. BGP v Route Selection Using Policy Controls Applying Route-Maps as BGP Filters.
Fulfilled by: Zakirov D. Group: Checked by: Svichkar Y.V Ministry of Education and Science of the Republic of Kazakhstan South Kazakhstan State. Pharmaceutical.
Take a look at the clothes you are wearing. Are they made from natural fabrics such as the cotton, linen or silk, or from synthetic fabrics, like nylon.
© 2005 Cisco Systems, Inc. All rights reserved. BGP v Optimizing BGP Scalability Implementing BGP Peer Groups.
Транксрипт:

Polymers

definition Polymers - high molecular weight compounds built from a large number of repetitive, elementary, or monomeric units

Radical polymerization of ethylene n – degree of polymerisation -CH 2 - the repeating unit -CH 2 -CH 2 - monomer unit monomer polymer

Classification of the polymers of the nature of the monomer unit Organic –natural Simple (natural rubber, cellulose) Complex (proteins, nucleic acids) –Synthetic Carbochain (polyethylene, polystyrene) Hetero (polyamides, polyesters) Inorganic Element-organic (siloxanes, polyphosphazenes) Inorganic (polyphosphates, polysilicates)

Classification of the polymers of the nature of the monomer unit Оrganic –natural simple (natural rubber, cellulose)

Classification of the polymers of the nature of the monomer unit Organic –Natural complex (proteins, nucleic acids) Аминокислоты 20 Нуклеотиды 5

Classification of the polymers of the nature of the monomer unit Organic –Synthetic Carbochain (polyethylene, polystyrene) The backbone side groups

Классификация полимеров по природе мономерного звена Organic –Synthetic Гетероцепные (polyamides, polyesters) nylon lavsan

Classification of the polymers of the nature of the monomer unit –Inorganic (siloxanes, polyphosphazenes)

Classification of the polymers of the nature of the monomer unit Inorganic –Inorganic (polyphosphates, polysilicates)

Synthetic polymers. Methods of obtaining. Radical Polymerization (chain statistical process) Ionic polymerization (stereoregular catalytic process) Polycondensation (chemical reaction of multifunctional monomers with the release of low-molecular products) Polyaddition (chemical reaction of multifunctional monomers without isolation of low molecular weight products)

n (C 2 H 4 )Molecular massCondition at 25C 128gas 6170aqua paraffins polymer polymer The dependence of the ethylene polymers state polymerization degree

Configuration of synthetic polymers linear branched divaricate hyperbrancheddendrimers

irregularities chain head to the tail head to-head mixed

Cis trans isomers

stereoisomers

Configuration of synthetic polymers ГомополимерыСополимеры AAAAAAAЧередующиеся Статистические Блок-сополимеры Привитые ABABABAB AAABABBABAABBA AAAAAAABBBBBBBB AAAAAAAAAAAA BBB B Сшитые AAAAAAAAAAAA BBB AAAAAAAAAAAA