Macromolecular compounds.. (1984)
Film-document №51537 2 parts, Duration: 0:18:50.578 Price category G
AnnotationThe film tells about a variety of high-molecular compounds, methods for their preparation. F. for students in the course "General Chemistry". Macromolecular compounds (polymers) are called organic compounds whose molecules consist of a large number of repeating units. Molecular weight polymers are usually very large. Polymers include - fiber, plastics and rubbers. Polymers are natural or synthetic origin, for example, polyethylene, polypropylene, synthetic rubbers. Polymers obtained by polymerisation reactions and polycondensation. In the polymerization with one another connect a large number of molecules, forming one large molecule, wherein the polymerization reaction in the molecule can join different materials. Polycondensation the formation of polymer macromolecules are allocated low-molecular substances, e.g., water. Polycondensation - step process. (Part 1 - Episode the atom Dyuma.Smysl macromolecule compounds. Polymer chains. Polymers. Formaldehyde, polyacetylenes. Organics. Synthesis. Etilep. Communication circuits radicals. Reaction progress. Gas - ethylene, solid. Polyethylene polymerization degree. Polycondensation. Phenol. Formaldehyde. A benzene ring. Part 2 - one to another. Properties and use of the polymers, homopolymers, copolymers. Managing End properties. Genetic engineering on the still level. Heat resistance. Thermoplastics. Rubber - ebony. Polymer Chemistry. Semiconducting properties.