【摘要】 用ＤＳＣ、ＷＡＸＤ和ＳＡＸＳ研究了溶液共混的弹性体型聚氨酯（ＰＵ）／聚碳酸酯（ＰＣ）共混物的结构。结果表明，ＰＵ／ＰＣ为部分相容体系；共混过程中，溶剂ＤＭＦ的诱导作用使ＰＣ形成结晶，其长周期与ＰＵ硬段形成微相的长周期相近更多还原

【Abstract】 Structure of elastomeric polyurethane(PU)/polycarbonate(PC)blends obtainedria dissolvation in DMF has been studied by DSC,wide angle X- ray diffraction(WAXD),and small angle X-ray scattering(SAXS).In the blends,the glass transition temperature ofPU increases with increasing the content of PC,the melting point of PC crystals is lowerthan that of pure PC. All the samples have a peak at the close positions on their SAXScurves. The results show that PU and PC are partially miscible and the long period of PU′smicro-phases is close to that of the solvent-induced crystal of PC.更多还原