LLDPE吹塑薄膜的结构与性能

he effect of nucleation agents on the crystalline structure, mechanical properties and transparency of blown molded LLDPE films were evaluated. The results indicated that with the addition of nucleation agents, the crystalline nuclei and crystallization rate increased, while the size and perfection degree of crystals decreased, which depressed the crystallinity of the matrix. The crystalline structure remained almost unchanged, but the characters of nucleation agents and the loading content, do influenced the diffraction intensity and corresponding crystallite size. Addition of these nucleation agents decreased the haze of films without sacrificing the mechanical properties. Considering all these factors, the loading content of nucleation agents should be controlled within 0.5wt% when improving the transparency is of major concern.