四苯基氯化鏻对聚偏氟乙烯电活性相的诱导作用

通过简单的熔体共混方法,将不同质量分数的高熔点高活性的四苯基氯化鏻(TPPC)与聚偏氟乙烯(PVDF)混合,探究了TPPC对PVDF极性相的诱导作用,并研究了此体系与熔体结晶过程最为相近的非等温结晶过程。结果表明,添加极少量(0.4%)的TPPC即可以使PVDF直接从熔体中全部以极性相结晶,这归因于TPPC固体表面的电荷与PVDF分子链之间强烈的相互作用。TPPC的加入使PVDF的非等温结晶行为发生了很大的变化,当TPPC含量达到0.4%时,降温结晶曲线出现两个结晶峰,也是这种反常的结晶行为才能使PVDF几乎全部以极性相结晶。

Inducing Effect of Tetraphenylphosphonium Chloride on Electroactive Phase of Poly(vinylidene fluoride)

Different amount of tetraphenylphosphonium chloride (TPPC) were added into poly(vinylidene fluoride) (PVDF) matrix with simple melt mixing method. The inducing effect of TPPC on electroactive phase of PVDF was investigated. The non-isothermal crystallization process of the system was studied,which was similar to the crystallization from the melt. The results show that by adding very small amount of TPPC (0.4%),the PVDF crystallizes into polar phase entirely. This can be attributed to the strong interaction between the surface charge of TPPC and PVDF molecule chains. The non-isothermal crystallization behavior is changed by the addition of TPPC. With 0.4% TPPC,two crystallization peaks occur on the cooling crystallization curve. The abnormal crystallization behavior makes the whole polar phase from melt crystallization.