PEO(聚氧乙烯)-b-PS(聚苯乙烯) > Polyoxymethylene(聚甲醛) diblock copolymer .lum¾ Polyoxymethylene (㚊⭢䟋) ¾ PEO(㚊≗҉✟)-b-PS(㚊㤟҉✟) diblock copolymer 14