ORIENTATION AND MORPHOLOGY OF HIGH-DENSITY POLYETHYLENE FILM PRODUCED BY THE TUBULAR BLOWING METHOD AND ITS RELATIONSHIP TO PROCESS CONDITIONS
ORIENTATION AND MORPHOLOGY OF HIGH-DENSITY POLYETHYLENE FILM PRODUCED BY THE TUBULAR BLOWING METHOD AND ITS RELATIONSHIP TO PROCESS CONDITIONS
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DOI：
10.1002/pol.1982.180200103
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发表时间：
1982-01-01
影响因子：
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通讯作者：
WHITE, JL
中科院分区：
文献类型：
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作者：
CHOI, KJ;SPRUIELL, JE;WHITE, JL
利用广角x射线散射极图分析和双折射技术对一系列高密度聚乙烯（HDPE）管状薄膜的取向和结晶度进行了表征。薄膜从单轴到等双轴不等。这些数据被用来计算双轴取向因子，然后绘制在取向因子三角形图上。结果表明，在所研究的条件范围内，晶体双轴取向因子都是在冻结线上施加在气泡上的应力的唯一函数。这两种相关性与迪斯和spruell对熔融纺HDPE纤维的研究结果相同。对薄膜的SAXS测量表明，在单轴和双轴薄膜中都存在层状结构。
The orientation and crystallinity of a series of high‐density polyethylene (HDPE) tubular films is characterized using wide‐angle x‐ray scattering pole‐figure analysis and birefringence. The films ranged from uniaxial to equal biaxial. The data were used to compute biaxial orientation factors which were then plotted on an orientation‐factor triangle diagram. It was shown, within the range of conditions studied, that both the crystalline biaxial orientation factors were unique functions of the stresses exerted on the bubble at the freeze line. Both correlations are the same as those developed by Dees and Spruiell for melt‐spun HDPE fibers. SAXS measurements on the films suggest lamellar structures in both uniaxial and biaxial films.