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Synthesis and microphase separation of diblock copolymers of styrene and p-chlorostyrene prepared by using N-oxyl capped macroinitiators

Butz, S. and Hillermann, J. and Schmidt-Naake, G. and Kressler, J. and Thomann, R. and Heck, B. and Stühn, B. (1998):
Synthesis and microphase separation of diblock copolymers of styrene and p-chlorostyrene prepared by using N-oxyl capped macroinitiators.
In: Acta Polymerica, 49 (12), pp. 693-699, [Article]

Abstract

Diblock copolymers of styrene and p-chlorostyrene (PS-b-PpClS) were prepared via chain extension polymerization of N-oxyl-capped polystyrene macroinitiators with p-chlorostyrene. The kinetics plots of the copolymerizations are approximately first order with respect to monomer concentrations. The addition of p-chlorostyrene to the macroinitiators yields microphase separated polymers, which were studied by transmission electron microscopy and small-angle X-ray scattering. The results on the morphology of the block copolymers obtained by both methods are in excellent agreement. A variety of block copolymer structures ranging from highly ordered hexagonally packed cylinders or systems with the simultaneous occurrence of cylinders and lamellae to relatively disordered spheres is observed.

Item Type: Article
Erschienen: 1998
Creators: Butz, S. and Hillermann, J. and Schmidt-Naake, G. and Kressler, J. and Thomann, R. and Heck, B. and Stühn, B.
Title: Synthesis and microphase separation of diblock copolymers of styrene and p-chlorostyrene prepared by using N-oxyl capped macroinitiators
Language: English
Abstract:

Diblock copolymers of styrene and p-chlorostyrene (PS-b-PpClS) were prepared via chain extension polymerization of N-oxyl-capped polystyrene macroinitiators with p-chlorostyrene. The kinetics plots of the copolymerizations are approximately first order with respect to monomer concentrations. The addition of p-chlorostyrene to the macroinitiators yields microphase separated polymers, which were studied by transmission electron microscopy and small-angle X-ray scattering. The results on the morphology of the block copolymers obtained by both methods are in excellent agreement. A variety of block copolymer structures ranging from highly ordered hexagonally packed cylinders or systems with the simultaneous occurrence of cylinders and lamellae to relatively disordered spheres is observed.

Journal or Publication Title: Acta Polymerica
Volume: 49
Number: 12
Divisions: 05 Department of Physics > Institute for condensed matter physics
05 Department of Physics
Date Deposited: 27 Feb 2010 12:50
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