摘要
对茂金属聚乙烯(mLLDPE)吹膜过程中产生的晶点进行了溶解分离,利用GPC和DSC等方法研究了各分离组分的溶解性能、结晶行为及分子量和分子量分布。实验结果确证,茂金属聚乙烯吹膜中的晶点是由与薄膜分子链结构相同的线性低密度聚乙烯和轻度交联的高密度聚乙烯(HDPE)凝胶2部分组成,其凝胶含量为(7. 4±1.1)%。
The fisheyes in the blown film of a metallocene linear low density polyethylene(mLLDPE) were (isolated) by the dissolution method, and the solubility, the molecular weight, and the crystallinity of the separated parts were characterized by gel permeation chromatography(GPC) and differential scanning calorimetry(DSC). The results show that the fisheyes are composed of (92.6±1.1)% of soluble mLLDPE and (7.4±1.1)% of insoluble, slightly crosslinked high (density) polyethylene gel.
出处
《应用化学》
CAS
CSCD
北大核心
2005年第4期399-402,共4页
Chinese Journal of Applied Chemistry
基金
国家高技术研究发展计划("八六三"计划2002AA333060)
高分子物理与化学国家重点实验室科学基金
关键词
茂金属聚乙烯
晶点
薄膜
组成
结构
metallocene polyethylene,fisheye,film,composition,microstructure
