Dipole moments and molecular structure of copolymers IV: Study of methyl acrylate-methyl methacrylate copolymers

Autor:	Mikiko Shima, Kazuko Shimomura, Akira Kotera
Rok vydání:	2007
Předmět:	chemistry.chemical_compound Monomer Materials science chemistry Polymer chemistry Copolymer Molecule Dielectric Methyl methacrylate Mole fraction Methyl acrylate Methacrylate
Zdroj:	Journal of Polymer Science Part C: Polymer Symposia. 30:233-242
ISSN:	1935-3065 0449-2994
DOI:	10.1002/polc.5070300127
Popis:	The dielectric properties of methyl acrylate-methyl methacrylate copolymers in benzene solutation have been measured, and it was found that the value of the average orientation polarization, Po, Av. of a monomer unit in the copolymers increases with an increase in the methyl acrylate content of the copolymers, e.g. from 37.4 cc. (for the copolymer in which the mole fraction of methyl acrylate, x, is 0.0605) to 40.9 cc. (for the copolymer in which x is 0.788) at 20°C. A theoretical treatment concerning the relation between the average orientation polarization and the detailed structure of a polar-polar copolymer has been developed, and the variation in value of PoAv. of the copolymer has been discussed in view of the detailed arrangement of monomer units in the copolymer molecule.
Databáze:	OpenAIRE
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