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Zur unverträglichkeit von polymergemischen. III. Lichtstreuungsmessungen an hochmolekularen polystyrolen in polymethylmethacrylat/benzol

✍ Scribed by Kuhn, Von R. ;Cantow, H.-J.

Publisher
Wiley (John Wiley & Sons)
Year
1969
Weight
691 KB
Volume
122
Category
Article
ISSN
0025-116X

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✦ Synopsis

Polystyrenes of high molecular weight were investigated by means of light scattering in the isorefractive polymer/solvent mixture polymethylmethacrylate/benzene. It was found, that the second osmotic virial coefficient, Az, was strongly dependent on the molecular weight and the concentration of polymethylmethacrylate (PMMA) but neglegibly on the molecular-weight of polystyrenes (PS) or on the temperature between 20 and 6OoC.

A plot of Az/At us. C ~M M A / C O revealed that all points fall on a common line for all molecular weights of PS and PMMA. Herein A: means the second osmotic virial coefficient of PS in pure benzene, C ~M M A the concentration of PMMA, and c g the concentration of PMMA a t the @-point (A2 = 0). This result could be theoretically interpreted in terms of the STOCKMAYER light scattering theory for multicomponent systems. * ) I. und 11. Mitteilung unter 2 , und 1).

📜 SIMILAR VOLUMES

Zur unverträglichkeit von polymergemisch
Zur unverträglichkeit von polymergemischen. VI. Lichtstreuungs- und trübungsmessungen an hochmolekularem polystyrol und poly-α-methylstyrol in polyisobutylen/benzol
✍ Kuhn, Von R. ;Bugdahl, V. ;Cantow, H.-J. 📂 Article 📅 1971 🏛 John Wiley and Sons 🌐 English ⚖ 289 KB 👁 1 views

## Abstract Ein hochmolekulares Polystyrol (PS) und ein Poly‐α‐methylstyrol (P‐α‐MS) wurden im nahezu isorefraktiven Polymer‐Lösungsmittel‐Gemisch Polyisobutylen (PIB)/Benzol mittels Lichstreuung untersucht. Es zeigte sich, daß die Verträglichkeits‐grade beider Systeme PS/PIB/Benzol und P‐α‐MS/PIB/