ISSN:
0022-3832
Schlagwort(e):
Chemistry
;
Polymer and Materials Science
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
,
Physik
Notizen:
2,4-Dimethyl-6-vinyl-s-triazine (A) is readily polymerized by free radical initiators to a high molecular weight product. Copolymerization studies with reference monomers (M1), styrene and methyl methacrylate, gave reactivity ratios with styrene: r1 = 0.12, r2 = 0.92; with methyl methacrylate: r1 = 0.37, r2 = 1.75. The following Q-e values were calculated: with styrene Q2 = 12, e2 = +0.92; with methyl methacrylate Q2 = 2.6, e2 = +1.09. These values indicate that the dimethyl triazinyl moiety is a radical stabilizing and electronegative substituent. Poly(2,4-dimethyl-6-vinyl-s-triazine) (PDMVT) is soluble in water and in all the common organic solvents with the exception of aliphatic hydrocarbons. Poly(isopropenyl-s-triazine) (PIT) is soluble only in dimethylformamide and chloroform. The latter also softened at a much higher temperature than PDMVT. These differences were considered a result of hydrogen bonding between chains in PIT.
Zusätzliches Material:
5 Tab.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/pol.1961.1205516129
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