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Dilute Solution Properties and Chain Dimensions of Poly(2-alkoxyethyl methacrylates)

Rishi K. Chawla ; Institute of Macromolecular Chemistry, Czechoslovak Academy of Sciences, 162 06 Prague 6, Czechoslovakia
Jaroslav Stejskal ; Institute of Macromolecular Chemistry, Czechoslovak Academy of Sciences, 162 06 Prague 6, Czechoslovakia
Dagmar Strakova ; Institute of Macromolecular Chemistry, Czechoslovak Academy of Sciences, 162 06 Prague 6, Czechoslovakia
Pavel Kratochvil ; Institute of Macromolecular Chemistry, Czechoslovak Academy of Sciences, 162 06 Prague 6, Czechoslovakia

Sažetak

The solution properties of poly(2-methoxyethyl methacrylate)
(PMEMA), poly(2-ethoxyethyl methacrylate) (PEEMA) and poly-
(2-n-butoxyethyl methacrylate) (PBEMA) have been compared.
The respective 8-temperatures in n-butanol are 64, 38 and 17DC.
From the relationships between intrinsic viscosity and molecular
weight in a thermodynamically good solvent, methyl ethyl ketone
(MEK), the respective characteristic ratios Coo = 11.1, 12.6, and
15.5 were estimated. The unperturbed dimensions of PBEMA
depend on the nature of the solvent, being lower in n-butanol
(12.3)than in MEK. The conformational properties of poly(2-alkoxyethyl methacrylates) resemble those of poly(n-alkyl methacrylates) with a comparable side-chain length.

Ključne riječi

Hrčak ID:

176157

URI

https://hrcak.srce.hr/176157

Datum izdavanja:

1.3.1987.

Posjeta: 938 *