mLLDPE/LDPE共混物相结构的研究  

Phase structure of mLLDPE/LDPE blends

作　　者：吴彤[1] 宋亮[1] 赵磊[1] 吴丝竹[1] 吴刚[1] 

机构地区：[1]北京市新型高分子材料制备与加工重点实验室,北京化工大学材料科学与工程学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2005年第1期51-54,共4页Journal of Beijing University of Chemical Technology(Natural Science Edition)

摘　　要：采用SAXS方法研究了不同配比的茂金属催化聚乙烯 (mLLDPE) /低密度聚乙烯 (LDPE)共混物的界面层厚度σb、Porod指数α、分散相尺寸ac 值、积分不变量Q值等相结构参数。研究结果表明 ,共混物中两相具有部分相容性 ,分散相以片状存在 ;当共混质量比为 80 / 2 0和 2 0 / 80时 。By means of SAXS experiments, the parameters of phase structure (i.e., interface layer thickness σ b, Porod index α , correlation distance a c, integration invariant Q , etc.) were investigated for binary blends of metallocene linear low density polyethylene (m LLDPE) and low density polyethylene (LDPE) with various compositions. The changes in the parameters of phase structure (i.e. interface layer thickness σ b, Porod index α , correlation distance ac, integral invariant Q , etc.) indicated that the two phases were partial miscible and the dispersed phase existed as flakes in the blend systems.

关 键 词：茂金属催化聚乙烯(mLLDPE) 低密度聚乙烯(LDPE) SAXS 相结构 

分 类 号：TQ317.3[化学工程—高聚物工业] TQ325.12