copolymeric definition of copolymeric in the Free Online Encyclopedia.

copolymer: see polymer polymer , chemical compound with high molecular weight consisting of a number of structural units linked together by covalent bonds (see chemical bond). The simple molecules that may become structural units are themselves called monomers; two monomers combine to form
..... Click the link for more information. .

copolymer [kō′päl·i·mər]

(organic chemistry)

A mixed polymer, the product of polymerization of two or more substances at the same time.

Copolymer

a polymer whose macromolecules contain several types of monomeric units. In regular copolymers, the different units are arranged in periodic fashion. The simplest examples are copolymers of styrene with maleic anhydride and copolymers of certain olefins with SO₂, constructed in the order . . . ABABAB . . . , where A and B are different types of monomeric units. More complicated regular sequences, with an alternating arrangement of units, are characteristic of, for example, the various amino-acid residues in certain proteins, such as the glycine-proline-hydroxyproline sequence in collagen. In irregular copolymers, the distribution of monomeric units is random, which is characteristic for many synthetic copolymers. In nucleic acids and most proteins, the irregular sequences of units are prescribed by a corresponding code, and it is these sequences that determine the biochemical and biological specificities of the corresponding compounds.

Copolymers in which the monomeric units of each type form rather long continuous sequences (blocks) that replace one another within the macromolecule are called block copolymers. One or several chains having a chemical composition different from that of the macromolecular chain may be added to the internal (nonterminal) monomeric units of the chain. Copolymers of this type are referred to as graft copolymers.

Materials with a given set of properties can be prepared by combining chemical units of various types in a single macromolecule. Thus, the synthesis of copolymers is one of the most effective means for modifying the properties of high-molecular-weight compounds.

REFERENCE

Entsiklopediiapolimerov, vols. 1–2. Moscow, 1972–74.

V. A. KABANOV

Mentioned in	?		References in periodicals archive	?		Encyclopedia browser	?		Full browser	?
No references found	This increase of mixture turbidity is similar to the results reported by other authors using copolymeric compatibilizers (13), (20). Polyamide-6/high-density polyethylene blend using recycled ... by Vallim, Marcio R.; Araujo, Joyce R.; Spinace, Marcia A. Silva; Paoli, Marco-A. De / Polymer Engineering and Science It contains at least one triarylmethane dye molecule chosen from polymeric triarylmethane dye molecules, copolymeric triarylmethane dye molecules, oligomeric triarylmethane dye molecules, and mixtures thereof; at least one film forming agent; and at least one solvent. Cosmetic composition by Household & Personal Products Industry Two shear stress peaks were reported at high shear rates in that work, and the authors concluded that the first peak at less than 1 strain unit was due to the disruption of a domain structure, whereas the smaller second peak at 60 strain units was not associated with liquid crystallinity, but may be related to the copolymeric nature of the system. Transient shear rheology and rheo-optical microstructural ... by Guo, Tianren; Harrison, Graham M.; Ogale, Amod A. / Polymer Engineering and Science	Copiah County copiapite Copiapo Copiapó Copic, Branko Copic, Vladimir Copier Copier-Duplicator copilot coping coping block coping brick coping course coping saw coping stone Copious Cooling copious free time coplanar electrodes coplanar forces Copland Copland, Aaron Copley, John Singleton Copley, Lionel Copodontidae Copolymer copolymeric copolymerization Coppard, Alfred Edgar Coppée, François Coppee, Francois Edouard Joachim Coppée, François Édouard Joachim Coppelius Copper copper acetate Copper Age copper alloy Copper Alloys copper amalgam copper arsenate copper arsenite copper beech Copper Belt copper bit copper blight copper blue copper brazing Copper Breaks State Park copper bromide copper cable copper carbonate Copper Carbonates	COPLR COPLS COPM COPMAGUA COPMG COPMTIA Copmuter Copmuter Copmuter Copn COPNA COPNL Copo COPOC copoclephily COPOCO Copodontidae COPOF COPOH COPOL Copolar COPOLCO copolymer copolymer copolymer Copolymer 1 Copolymer Alloy copolymer resin copolymer resin copolymer resin copolymeric copolymerisation copolymerise copolymerised copolymerises copolymerising copolymerization copolymerization copolymerization copolymerize copolymerize copolymerize copolymerized copolymerizes copolymerizing Copolymers Copolymers Copolymers COPOM Coporation Coporation Coporation Coporation Coporation Coportion copossessor copout Copp Copp Coppa COPPAC

Mentioned in

References in periodicals archive

Encyclopedia browser

Full browser

No references found

This increase of mixture turbidity is similar to the results reported by other authors using copolymeric compatibilizers (13), (20).

Polyamide-6/high-density polyethylene blend using recycled ... by Vallim, Marcio R.; Araujo, Joyce R.; Spinace, Marcia A. Silva; Paoli, Marco-A. De / Polymer Engineering and Science

It contains at least one triarylmethane dye molecule chosen from polymeric triarylmethane dye molecules, copolymeric triarylmethane dye molecules, oligomeric triarylmethane dye molecules, and mixtures thereof; at least one film forming agent; and at least one solvent.

Cosmetic composition by Household & Personal Products Industry

Two shear stress peaks were reported at high shear rates in that work, and the authors concluded that the first peak at less than 1 strain unit was due to the disruption of a domain structure, whereas the smaller second peak at 60 strain units was not associated with liquid crystallinity, but may be related to the copolymeric nature of the system.

Transient shear rheology and rheo-optical microstructural ... by Guo, Tianren; Harrison, Graham M.; Ogale, Amod A. / Polymer Engineering and Science

Copolymer (redirected from copolymeric)

REFERENCE

Copolymer
(redirected from copolymeric)