CAJ | 학술논문

采用热台偏光显微镜和原子力显微镜等研究了含有不同成核剂的线型低密度聚乙烯（LLDPE）的结晶行为和聚集态结构，探讨了LLDPE薄膜内部及表面结构与薄膜光学性能之间的关系。结果表明：随着成核剂含量以及分散程度的增加，LLDPE的结晶速率加快，同时内部球晶尺寸减小，表面粗糙度降低。成核剂VP-401E在LLDPE中的分散程度相对更高，这是其成核剂效果较好的原因。随着成核剂含量以及分散程度的增加，LLDPE薄膜内部晶粒更加细化，表面变得平整，可从内部和表面同时降低薄膜的雾度，改善透光性能。
채용열태편광현미경화원자력현미경등연구료함유불동성핵제적선형저밀도취을희（LLDPE）적결정행위화취집태결구，탐토료LLDPE박막내부급표면결구여박막광학성능지간적관계。결과표명：수착성핵제함량이급분산정도적증가，LLDPE적결정속솔가쾌，동시내부구정척촌감소，표면조조도강저。성핵제VP-401E재LLDPE중적분산정도상대경고，저시기성핵제효과교호적원인。수착성핵제함량이급분산정도적증가，LLDPE박막내부정립경가세화，표면변득평정，가종내부화표면동시강저박막적무도，개선투광성능。
The crystallization behavior and morphology of linear low density polyethylene (LLDPE) samples containing different nucleating agents were studied by hot stage polarized light microscope (HSPLM), atomic force microscope (AFM), etc. The influences of the microstructure and surface structure of the LLDPE films on optical properties of the films were explored. The results show that the crystallization rate of the LLDPE resins increases and the spherulite size decreases with the rise in the amount and dispersity of the nucleating agents, as a result, the roughness of the LLDPE films declines. The nucleating agent VP-401E has higher dispersity in the LLDPE matrix, which contributes to the excellent nucleating effect. The LLDPE films have finer spherullite and their surface becomes smoother with the increasing of the amount and dispersity of the nucleating agents. Consequently, the haze of the LLDPE films is lowered from internal and surface aspects and the transparency of the LLDPE films is improved.