摘要
向聚苯乙烯（ＰＳ）中引入磺酸基团可以有效地改善ＰＳ与一种热致液晶聚合物（ＬＣＰ）之间的相容性．用溶液共混的方法制备了ＰＳ和磺化聚苯乙烯（ＨＳＰＳ）与ＬＣＰ的共混物．用ＦＴＩＲ以及红外光谱的合成技术对ＬＣＰ共混体系进行了表征．共混物中组分聚合物特征吸收的位置和谱图的形状表明在ＬＣＰ与ＰＳ分子间没有相互作用发生，而在ＬＣＰ与ＨＳＰＳ分子间则存在较强的相互作用．谱图差减技术确认了ＬＣＰ分子中ＣＯ与ＣＯ基团和ＨＳＰＳ中的磺酸基团参与了相互作用，使得这些基团的特征吸收发生了偏移．
Presents the FTIR spectra and spectral manipulatioins of liquid crystalline polymer (LCP) blends with polystyrene (PS) and modified polystyrene,lightly sulfonated polystyrene (HSPS).Earlier DSC and SEM studies have demonstrated that HSPS is completely miscible with LCP,although their molecular structure differs greatly from each other,whereas PS is immiscible with LCP.FTIR study now elucidates the origin of miscibility enhancing is the presence of specific interactions involving the carbonyl groups and CO groups in the LCP and sulfonate groups in the HSPS molecular chains,resulting in very intimate mixing of the HSPS with the LCP′s segment.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1998年第3期276-281,共6页
Acta Polymerica Sinica
基金
自然科学基金
关键词
聚苯乙烯
LCP
热致液晶聚合物
共混物
相容性
Sulfonate ionomer,Liquid crystalline polymer,FTIR, Intermolecular interaction, Miscibility
