Columbia Encyclopedia

Search results

50 results found

thermoplastics

(Encyclopedia)thermoplastics, materials that soften or melt when heated and harden when cooled. Thermoplastic polymers consist of long polymer molecules that are not linked to each other. i.e., have no cross-links....

Toledo, University of

(Encyclopedia)Toledo, University of, at Toledo, Ohio; coeducational; chartered 1872, opened 1875, and received its first municipal support in 1884. Its present name was adopted in 1940, and in 1967 the university w...

Dacron

(Encyclopedia)Dacron dāˈkrŏn, dăkˈrŏn [key], trademark for a polyester fiber. Dacron is a condensation polymer obtained from ethylene glycol and terephthalic acid. Its properties include high tensile strength...

actin

(Encyclopedia)actin, a protein abundantly present in many cells, especially muscle cells, that significantly contributes to the cell's structure and motility. Actin can very quickly assemble into long polymer rods ...

polyolefins

(Encyclopedia)polyolefins pŏlˌēōlˈəfən [key], group of plastics that are polymers of various alkenes, or olefins. The most important are polyethylene and polypropylene. ...

starch

(Encyclopedia)starch, white, odorless, tasteless, carbohydrate powder. It plays a vital role in the biochemistry of both plants and animals and has important commercial uses. In green plants starch is produced by p...

MacDiarmid, Alan Graham

(Encyclopedia)MacDiarmid, Alan Graham, 1927–2007, American chemist, b. Masterton, New Zealand, Ph.D. Univ. of Wisconsin, Madison, 1953, Ph.D. Cambridge, 1955. MacDiarmid was on the faculty at the Univ. of Pennsyl...

Staudinger, Hermann

(Encyclopedia)Staudinger, Hermann, 1881–1965, German chemist, Ph.D. Univ. of Halle, 1903. Staudinger held faculty positions at the Univ. of Strasbourg (1903–7), the Technical Univ. of Karlsruhe (1907–12), and...

Akron

(Encyclopedia)Akron ăkˈrən [key], city (2020 pop. 190,469), seat of Summit co., NE Ohio, on the Little Cuyahoga River; inc. 1865. Once the heart of the nation's rubber industry, Akro...

polyacrylics

(Encyclopedia)polyacrylics pŏlˌēəkrĭlˈĭks [key], group of thermoplastics that are transparent and highly decorative (see plastic). The polyacrylics, or acrylic plastics, are polymers (and copolymers) of deri...

Browse by Subject