The intermediate to later stage of the spinodal decomposition of off-critical mixture of poly (methyl methacryate) ( PMMA ) and poly ( styrene-co-acryonitrile ) ( PSAN) was investigated by the time-resolved light-scat...The intermediate to later stage of the spinodal decomposition of off-critical mixture of poly (methyl methacryate) ( PMMA ) and poly ( styrene-co-acryonitrile ) ( PSAN) was investigated by the time-resolved light-scattering technique.lt is shown that during unmixing process there exist power relations of maximum scattered intensity Im(t)and its corresponding wave vactor to time t. In the later stage the scaling relation of structure funcfion S (q, t) with wave vactor qm and β=3α were found. In the intermediate stage some relationship of structure function S(q,t) with wave vactor q was revealed.展开更多
基金supported by the National Natural Science Foundation of China(No.21991132,No.52033010,and No.52021002)the National Key R&D Program of China(No.2020YFA0710700 and No.2020YFA0710703).
文摘The intermediate to later stage of the spinodal decomposition of off-critical mixture of poly (methyl methacryate) ( PMMA ) and poly ( styrene-co-acryonitrile ) ( PSAN) was investigated by the time-resolved light-scattering technique.lt is shown that during unmixing process there exist power relations of maximum scattered intensity Im(t)and its corresponding wave vactor to time t. In the later stage the scaling relation of structure funcfion S (q, t) with wave vactor qm and β=3α were found. In the intermediate stage some relationship of structure function S(q,t) with wave vactor q was revealed.
