Reversing pulse electric birefringence of sodium poly(styrenesulfonate) in aqueous solutions
Reversing pulse electric birefringence of sodium poly(styrenesulfonate) in aqueous solutions
复制标题
聚苯乙烯磺酸钠在水溶液中的反转脉冲电双折射
DOI：
10.1021/j100448a026
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发表时间：
1980
期刊：
影响因子：
--
通讯作者：
K. Ueda
中科院分区：
文献类型：
--
作者：
K. Yamaoka;K. Ueda
反向脉冲电双折射（RPEB）由O’Konski和Pytkowicz首先提出，9是一种强大的电光方法，可以区分上述三种类型的取向机制。还对许多情况进行了 RPEB 的理论计算 8 如果聚离子具有永久和/或慢诱导偶极矩，则双折射信号 An 显示在所施加的方形脉冲场反转后 tm 时间处的极值 Am。如果聚离子以极化率各向异性和/或快速诱导偶极矩取向，则 An 保持不变。然而，RPEB 方法的实用性尚未得到充分认识，并且此后仅出现了少数报告。这主要是因为用新建的RPEB装置构造一个短时间常数的高压反向脉冲发生器很困难，该装置可以检测a£ m约为的极值。 0.5 ps 和 (1-
The reversing pulse electricbirefringence (RPEB), first introducedbyO’Konski andPytkowicz, 9 is a powerful electroopticalmethod which can differentiate the above-mentioned three types of the orientation mechanism. Theoretical calculations of RPEB were also carried out for numerous cases 8 Thebirefringence signal An shows an extremum Am at a time of tm after the reversal of an ap-plied square pulse field, if a polyion possesses the per-manent and/or slow-induced dipole moments. The An remains unchanged if the polyion is oriented with the polarizability anisotropy and/or the fast-induceddipole moment Yet, the usefulness of the RPEB method has not been fully appreciated and only a few reports have since appeared. This is mostly because of the difficulty in constructing a high-voltage reversing pulse generator of short time constant With a newly built RPEB apparatus which can detect an extremum with a£ m of ca. 0.5 ps and a (1-