摘要
采用衰减全反射傅立叶变换红外光谱(FTIR-ATR)和扫描电子显微镜研究了极性组分聚乙二醇在聚乙烯/聚乙二醇共混物中的表面富集特性。研究结果认为不同组分表面自由能的差异以及聚乙烯基体的结晶异相排斥作用是导致聚乙二醇组分向共混物表面富集的主要驱动力,而极性组分相区的大小和分布则是影响其选择性迁移过程的重要因素。因此,可以通过添加合适相容剂的办法对聚乙二醇组分的表面富集程度进行有效的调控。
The enrichment of poly(ethylene glycol) (PEG) segments on the surface of polyethylene/poly(ethylene gly-col) blends (PE/PEG) was investigated using FTIR-ATR and SEM. It has been found that the selective aggregation of the PEG on the surface of PE/PEG blends is mainly affected by the size and the size distribution of the segregated domains of PEG. If the compatibilzer is added to the blends, the size of PEG segregated domains can be reduced and the selective aggregation of PEG on the surface can be enhanced. It was believed that a proper amount of compatibilzer in the blends is useful for controlling the surface selectivity of PEG component.
出处
《功能高分子学报》
CAS
CSCD
2003年第2期184-190,共7页
Journal of Functional Polymers
基金
教育部博士点专项科研基金(20010558002)
国家自然科学基金(50273048)
广东省自然科学基金(990271)
