STUDIES ON ULTRASONIC ABSORPTION AND VISCO-RELAXATION OF POLY (ETHYLENE GLYCOL) AQUEOUS SOLUTIONS

被引：0
作者：
SUBHI KEMAL HASSUN
ALIA ABDULMUHSIN SHIHAB
FATIMA ABDULAMIR JASSIM
机构：
[1] Physics Department-College of Education-University of Baghdad
[2] Iraq
来源：
Chinese Journal of Polymer Science | 1989年 / 03期
关键词：
PEG; ETHYLENE GLYCOL; STUDIES ON ULTRASONIC ABSORPTION AND VISCO-RELAXATION OF POLY;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
<正> Ultrasonic absorption and velocity measurements were made on aqueous solutions of poly (ethylene glycol)(PEG)of different molecular weights and concentrations, using a pulse sender-receiver ultrasonic generator, Measurements were obtained at a frequency of 2MHz. , and a temperature of 293 K. The results show a linear increase of the Values of velocity, density and viscosity with increase of molecu lar weight and concentration of PEG. On the contrary, the attenuation values decreased with increase of molecular weight and concentration of PEG. A mathematical equation correlating relaxation amplitude and molecular weight of the polymer is suggested. This was applied to calculate the molecular weights of unknown samples of PEG from their measured relaxation amplitude. The results obtained were in good agreement with those obtained from osmometry.
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页码：270 / 279
页数：10
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