Gel permeation chromatography of oxyethylene/oxypropylene block copolymers
β Scribed by Yun-Zhu Luo; N. Kausalya Reddy; Frank Heatley; Colin Booth; Elizabeth J. Goodwin; David Jackson
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 332 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0014-3057
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Diblock copolymers, each with two stat-copoly(oxyethylene/oxypropylene) blocks, were prepared by sequential anionic copolymerization in the presence of a crown ether, and characterized by gel permeation chromatography and NMR spectroscopy. Aqueous solutions of the copolymers were investigated by sta
Gel permeation chromatograms of block copolymers of cis 1:4 polyisoprene and polystyrene with narrow molecular weight and composition distributions have been examined by the normal -probability plot method. The parameters l~lw, 1~I, and standard deviation ~ have been evaluated and the results compar