Bunkin Nikolai F, Bolotskova Polina N, Bondarchuk Elena V, Gryaznov Valery G, Gudkov Sergey V, Kozlov Valeriy A, Okuneva Maria A, Ovchinnikov Oleg V, Smoliy Oleg P, Turkanov Igor F
Department of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya Str. 5, 105005 Moscow, Russia.
Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilova St. 38, 119991 Moscow, Russia.
Polymers (Basel). 2021 Apr 29;13(9):1443. doi: 10.3390/polym13091443.
The swelling of a polymer membrane Nafion in deionized water and isotonic NaCl and Ringer's solutions was studied by photoluminescent spectroscopy. According to our previous studies, the surface of this membrane could be considered as a model for a cellular surface. Liquid samples, in which the membrane was soaked, were subjected to preliminary electromagnetic treatment, which consisted of irradiating these samples with electric rectangular pulses of 1 µs duration using platinum electrodes immersed in the liquid. We used a series of pulses with a repetition rate of 11-125 Hz; the pulse amplitudes were equal to 100 and 500 mV. It turned out that at certain pulse repetition rates and their amplitudes, the characteristic swelling time of the polymer membrane significantly differs from the swelling time in untreated (reference) samples. At the same time, there is no effect for certain frequencies/pulse amplitudes. The time interval between electromagnetic treatment and measurements was about 20 min. Thus, in our experiments the effects associated with the long-term relaxation of liquids on the electromagnetic processing are manifested. The effect of long-term relaxation could be associated with a slight change in the geometric characteristics of bubston clusters during electromagnetic treatment.
通过光致发光光谱研究了聚合物膜Nafion在去离子水、等渗NaCl溶液和林格氏溶液中的溶胀情况。根据我们之前的研究，该膜的表面可被视为细胞表面的模型。将浸泡有该膜的液体样品进行初步电磁处理，该处理包括使用浸入液体中的铂电极以1微秒持续时间的矩形电脉冲照射这些样品。我们使用了一系列重复频率为11 - 125 Hz的脉冲；脉冲幅度分别为100 mV和500 mV。结果表明，在特定的脉冲重复频率及其幅度下，聚合物膜的特征溶胀时间与未处理（参考）样品的溶胀时间有显著差异。同时，对于某些频率/脉冲幅度没有影响。电磁处理与测量之间的时间间隔约为20分钟。因此，在我们的实验中，与液体在电磁处理中的长期弛豫相关的效应得以体现。长期弛豫的效应可能与电磁处理过程中气泡团簇几何特征的轻微变化有关。
