摘要
采用结合物理老化技术的示差扫描量热法( D S C) 以及非辐射能量转移荧光光谱法( N R E T) 研究了聚( 苯乙烯co4乙烯基苯酚) ( S T V Ph) 与聚( 苯乙烯co4乙烯基吡啶)( S T V Py) 共混体系在本体中的相容与络合行为.当 S T V Ph 中 O H 含量为3 ,6 ,9 m ol % 时,可以分别与吡啶基含量是25 ,50 ,75 mol % 的 S T V Py 实现相容, O H 含量更高时还可进一步形成络合,表现为远较 Fox 方程预示值高的 Tg 和窄的转变温度区间.此外。
The miscibility and complexation behavior of poly(styrene co 4 vinylphenol)( S T V Ph) and poly(styrene co 4 vinylpyridine)( S T V Py) in bulk have been investigated bydifferential scanning calorimetry ( D S C) combined with physical aging as well as non radiative energy transfer ( N R E T) fluorospectroscopy . It has been found that when thehydroxylcontent in S T V Ph reaches 3 ,6 ,9 mol% ,the miscibility of S T V Ph with S T V Pycan be achieved which contains 25 ,50 ,75 mol% vinylpyridine units ( V Py) respectively . Itisnoticeable that when the hydroxyl content is further increased ,complex formation betweenthe components occurs. An apparent casting solvent effect on both miscibility andcomplexation has been also discussed .
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1999年第5期545-550,共6页
Acta Polymerica Sinica
关键词
PSTVPy
PSTVPh
共混物
相容-络合转变
高分子
Miscibility complexation transition
Hydrogen bonding
Differential scanningcalorimetry ( D S C)
Physicalaging
Non radiative energy transfer ( N R E T)