Ellipsometric analysis on the in situ reactive compatibilization of immiscible polymer blends

摘要: Abstract Time-resolved ellipsometric analysis was carried out to investigate the change in interfacial thickness between amorphous nylon and styrenic polymers during annealing at high temperatures (170–210°C). The were neat poly(styrene-co-maleic anhydride) (SMA) single-phase mixtures of SMA with poly(styrene-co-acrylonitrile) (SAN). Here is known be reactive chain end nylon, forming a graft copolymer interface phases. increased time then attained constant value, depending on temperature net concentration sites (maleic anhydride units) phase. established late stages tremendously thick, ranging from 10 50 nm. thickest several times coil size component polymer. This may suggest drawing whole into establish smooth gradient interface. Formation such thick seems characteristic system which chemical reaction induces deviation an equilibrium ternary consisting polymer A, B A–B or block copolymer. Thus study provided preliminary understanding situ compatibilization blends terms problem.