Temperature dependence of the lamellar structure of a styrene-isoprene two-block copolymer

摘要: Abstract The lamellar structure of a styrene-isoprene two-block copolymer has been studied by low-angle X-ray diffraction as function temperature. It shown that the lines remain sharp up to ∼250°C. thickness lamellae, order 600 A in range from 20°–180°C, suddenly starts increasing drastically attain values high ∼1200 A. This thickening effect discussed briefly terms chain conformation, and tentative model local ‘organization’ suggested.