低雾度聚乙烯薄膜在日常生活中以及工业和农业中应用广泛。研究制备了一种低雾度的聚乙烯/环状嵌段共聚物薄膜，探究了不同组分的线性低密度聚乙烯（LLDPE）/环状嵌段共聚物聚乙烯基环己烷-b-聚乙烯-b-聚乙烯基环己烷（PVCH-PE-PVCH）共混物，运用差示扫描量热仪（DSC）及原位同步辐射广角衍射（WAXD）、小角散射（SAXS）作为表征手段，对共混体系的相容性和相分离行为进行研究，并对材料进行了光学性能测试。结果表明：LLDPE与PVCH-PE-PVCH具有一定的相容性。较少量PVCH-PE-PVCH混入LLDPE中不会对材料的结晶温度、结晶能力以及畴间距产生明显影响，但对其共混体系的晶体规整性存在一定的影响。其中，PVCH-PE-PVCH质量分数为2%时，LLDPE共混膜的光学性能最优异。

Low haze polyethylene films have a wide range of applications in daily lives as well as in industry and agriculture. In this paper, a low-haze polyethylene/cyclic block copolymer film was prepared, linear low density polyethylene (LLDPE)/cyclic block copolymer poly(vinylcyclohexane)-b-polyethylene-b-poly(vinylcyclohexane) (PVCH-PE-PVCH) blends with different compositions have been investigated. Using differential scanning calorimetry (DSC) and in situ synchrotron wide-angle diffraction (WAXD) and small-angle scattering (SAXS) as a means of characterization, the compatibility and phase separation behavior of the blended systems were investigated and the optical properties of the materials were tested. The results show that LLDPE is compatible with PVCH-PE-PVCH, smaller amounts of PVCH-PE-PVCH blended into LLDPE do not significantly affect the crystallization temperature, crystallinity and domain spacing of the material. However, there is some influence on the crystal regularity of its blended system. Among them, the optical properties of LLDPE blended film are the most excellent when the PVCH-PE-PVCH mass fraction is 2%.