中国塑料2018，Vol.32Issue(6)：65-71,7.DOI:10.19491/j.issn.1001-9278.2018.06.010
双向拉伸聚丙烯薄膜在有机二氧化硅颗粒共存下的结晶结构和形态
Crystalline Structure and Morphology of Biaxial Oriented Polypropylene Film Under Coexistence of Silica Nanoparticles
摘要
Abstract
The PP/EVA/nano-SiO2composites were prepared by melt blending,in which the nano-SiO2was surface-treated with EVA,and then,a surface-modified BOPP film was prepared by using the resulting composites.The surface morphology and cross-section of the film were observed by scanning electron microscopy,and their degree of crystallinity,molecular orientation and grain size were detected by X-ray diffraction measurement.Furthermore,the presence of microholes in the film was confirmed by positron annihilation spectroscopy,and the relationship between the crystalline structure and morphology and the solvent residue was investigated.The results indicated that the modified BOPP film not only had a higher degree of crystallinity and smaller grain size than the unmodified one,but also had a dense surface structure and reticular fiber bundle internal structure.These characteristic structures make the diffusion coefficient and solubility of ethyl acetate small in the film,thus improving the mechanical properties significantly.关键词
聚丙烯薄膜/串晶结构/溶解度/扩散系数Key words
polypropylene film/shish-kebab crystal/solubility/diffusivity分类
化学化工引用本文复制引用
张敏,常欢,李东立,许文才,付亚波..双向拉伸聚丙烯薄膜在有机二氧化硅颗粒共存下的结晶结构和形态[J].中国塑料,2018,32(6):65-71,7.基金项目
国家自然科学基金项目(31471653) （31471653）
北京市自然科学基金(2182018) （2182018）
北京市教委科技创新提升项目(PXM2017_014223_000034) （PXM2017_014223_000034）
