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

1 Polymers

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

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

4 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)

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

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

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

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

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

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

11 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)

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

13 Configuration of synthetic polymers linear branched divaricate hyperbrancheddendrimers

14 irregularities chain head to the tail head to-head mixed

15 Cis trans isomers

16 stereoisomers

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