Chain Folding in Semicrystalline Oxyethylene/Oxybutylene Diblock Copolymers
Macromolecules1997Vol. 30(26), pp. 8392–8400
Citations Over TimeTop 10% of 1997 papers
Shao-Min Mai, J. Patrick A. Fairclough, Kyriakos Viras, P.A. Gorry, Ian W. Hamley, Anthony J. Ryan, Colin Booth
Abstract
The chain folding behavior of oxyethylene/oxybutylene (E/B) diblock copolymers, with one crystallizable E block and one noncrystallizable B block, has been studied by simultaneous SAXS and WAXS, low-frequency Raman spectroscopy, and differential scanning calorimetry. Two models, normal density (ND) and crystal/liquid-crystal (CLC) models were used to explore the results, consideration being given to the difference in the cross-sectional area of the two chains and the need to fill space at approximately normal density. It was found that both models can describe the data for the longer copolymers, but the CLC model is better for the shorter copolymers.
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