Demonstration of QCM Measurement of Viscoelastic Phase Behavior of PVA Sol in Its Freezing-Thawing Process
Demonstration of QCM Measurement of Viscoelastic Phase Behavior of PVA Sol in Its Freezing-Thawing Process
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PVA溶胶冻融过程中粘弹性相行为的QCM测量演示
DOI：
10.1002/masy.201500061
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发表时间：
2015
影响因子：
--
通讯作者：
Yoshimi Seida
中科院分区：
文献类型：
--
作者：
Yoshimi Seida;Mitsuteru Ogawa;清田佳美;Yoshimi Seida
利用自行研制的低温池，采用石英晶体微天平（QCM）测定了聚乙烯醇水溶胶在冻融过程中的粘弹行为。通过对两种不同聚合度和皂化度的聚乙烯醇（PVA）溶胶的QCM振荡的串联共振频率（fs）和电阻（R1）的测定，评价了PVA溶胶在温度振荡过程中的粘弹性行为。谐振参数通过振荡的导纳分析（QCM-A）获得。还监测不受样品粘度影响的频率（f2）以评价粘度对频率的影响。QCM较好地反映了PVA溶胶在冻融过程中共振参数的变化。研究了QCM低温测量用于软材料粘弹性分析的潜力。
Measurement of viscoelastic behavior of poly(vinylalcohol) aqueous sols during freezing–thawing process was demonstrated by means of quartz crystal microbalance (QCM) usingcryo‐cell developed in this study. The viscoelastic behavior of the PVA sols during the temperature swing was evaluated based on te serial resonance frequency (fs) and resistance (R1) of the QCM oscillation for two kinds of PVA sols with different degree of polymerization and saponification. The resonance parameters were obtained through admittance analysis of the oscillation (QCM‐A). The frequency (f2) that is free from the viscosity influence of the sample was also monitored to evaluate the influence of viscosity on thefs. The change of resonance parameters during the freezing–thawing process of the PVA sols were obtained by the QCM fairly well. The potential ofcryo‐measurement of QCM for the viscoelastic analysis of the soft material was examined.