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单词 polycondensation
释义

polycondensationn.

Brit. /ˌpɒlɪkɒndɛnˈseɪʃn/, /ˌpɒlɪkɒnd(ə)nˈseɪʃn/, U.S. /ˌpɑliˌkɑndɛnˈseɪʃ(ə)n/
Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: poly- comb. form, condensation n.
Etymology: < poly- comb. form + condensation n., after German Polykondensation ( H. Staudinger Die hochmolekularen Verbindungen (1932) ii. 255).
Chemistry.
A condensation reaction which occurs between molecules each having at least two functional groups and which yields a polymer; a process based on such a reaction.
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the world > matter > chemistry > polymer chemistry > polymerization > [noun] > condensation
polycondensation1936
the world > matter > chemistry > organic chemistry > chemical processes or reactions > [noun] > condensation > types of
self-condensation1879
polycondensation1936
Prins reaction1944
1936 Trans. Faraday Soc. 32 52 The formation of high polymeric products can also take place by a polycondensation process in which numerous reactive molecules condense.
1963 A. J. Hall Student's Handbk. Textile Sci. ii. 79 It [sc. nylon] is made by the melt-spinning of polyhexamethylene adipamide which in its turn is produced by the polycondensation of equimolecular proportions of adipic acid..and hexamethylene diamine.
1995 Nature 30 Mar. 409/3 A silica gel is generally formed by polycondensation of a silica-containing precursor, such as tetramethoxysilane or waterglass.
This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).
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n.1936
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