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Poly(α-methylstyrene-b-styrene) by a cationic mechanism (1987)

De Souza Gomes, Ailton ; Soares, Bluma Guenther

Bognor Regis [u.a.] : Wiley-Blackwell

Journal of Polymer Science Part A: Polymer Chemistry 25 (1987), S. 353-363

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ISSN: 0887-624X

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Block copolymers of styrene and α-methylstyrene were obtained by a cationic mechanism involving a single-step addition in the m-chloroperbenzoic acid/liquid sulfur dioxide system. This result was possible because of the difference in the reactivity of these monomers in the temperatures of -40°C, -60°C, and -78°C. Under these temperature conditions α-methylstyrene is more reactive than styrene. The composition of the block copolymers was determined by NMR and TGA analysis in fractionated samples.

Additional Material: 10 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/pola.1987.080250131

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