Instrumentation of New Device to Estimate Gas Permeability and Viscoelastic Properties for Thin Polymeric Membranes Using Quartz crystal Osillator

使用石英晶体振荡器估算聚合物薄膜透气性和粘弹性的新装置仪器

• 批准号: 07555299
• 负责人: TSUJITA Yoshiharu
• 金额: $ 7.74万
• 依托单位: Nagoya Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555299/
• 关键词: Quartz crystal oscillator; Gas sorption; Viscoelasticity; Molecular motion; Super critical fluid; Resonant frequency; Resonant resistance; Glass transition; 気体透過性; QCM; 収着; 拡散; 透過

In this study, we try to estimate the gas sorption and diffusion properties and viscoelasticity of the polymeric membrane in situ using the quartz crystal oscillator. Quartz crystal microbalance, QCM is known to be very sensitive measuring device because the oscillating frequency changes sharply with the variation of weight on the electrode. The CO_2 sorption isotherm obtained by the QCM device was fully pverlapped with the data observed by the electromicrobalance method.This QCM device has some advantages, that is, it can measure up to comparatively high pressure and need only a few specimens (ca.30mug), and so on. Moreover, this QCM method could measure the sorption of organic vapors. The CO_2 sorption isotherms of the glassy polymer film specimen coated on QCM electrode was carried out up to 60 atm. The sorption isotherm obtained can be divided into two sections, the glassy region which is concave toward the pressure axis and the rubbery region which is linear. The inflection point … More splitting up the isotherm is considered the isothermal glass transition point caused by plasticizing by CO_2 sorption. Next, we try to measure the CO_2 sorption isotherms and CO_2 permeability coefficients for the silicone rubber. The solubility and permeability changed at the critical pressure of CO_2. From these results, it was considered that the permeation properties of CO_2 for polymers are influenced by the degree of aggregation of CO_2. On the other hand, we also measured the resonant resistance of the quartz crystal oscillator coated with various polymers. The resistance increased suddenly above the grass transition temperature at 9MHz which is calculated from the primary dispersion temperature determined by dielectric dispersion at various frequencies. The behaviors of resonant frequency and resistance of the polymer-coated oscillator could be corresponding to the state of the polymer, i.e, in glassy, rubbery, fluid states. From these study, we could confirm the high potential of the polymer-coated quartz crystal oscillator for the sorption and viscoelastic behaviors of polymers. Less

在本研究中，我们尝试使用石英晶体振荡器来估计原位聚合物膜的气体吸附和扩散性质以及粘弹性。石英晶体微天平（QCM）是一种灵敏度很高的测量仪器，因为它的振荡频率会随着电极上砝码的变化而急剧变化。用QCM装置测得的CO_2吸附等温线与用电微量天平法测得的数据完全吻合，该装置具有可测较高压力、样品量少（约30 μ g）等优点，而且该方法还能测量有机蒸气的吸附。在60个大气压下测定了涂敷在QCM电极上的玻璃态聚合物膜样品的CO_2吸附等温线。吸附等温线可分为两个部分，玻璃态区是凹向压力轴和橡胶态区是线性的。拐点 ...更多信息 等温线的分裂被认为是CO_2吸附增塑引起的等温玻璃化转变点。其次，我们尝试测量硅橡胶的CO_2吸附等温线和CO_2渗透系数。在CO_2临界压力下，溶解度和渗透率发生变化。由此认为，CO_2在聚合物中的聚集程度影响CO_2的渗透性能。另一方面，我们也测量了涂有各种聚合物的石英晶体振荡器的谐振电阻。在9MHz下，电阻在高于草转变温度时突然增加，草转变温度是由在各种频率下的介电色散确定的初始色散温度计算的。聚合物包覆振荡器的谐振频率和电阻特性可以与聚合物的状态（玻璃态、橡胶态、流体态）相对应。通过这些研究，我们可以证实聚合物涂层石英晶体振荡器对于聚合物的吸附和粘弹行为的高潜力。少

项目成果

大室渉・吉水広明・辻田義治・木下隆利: "水晶振動子を利用したガラス転移の観察" 高分子学会予稿集. 46. (1997)

Wataru Omuro、Hiroaki Yoshimizu、Yoshiharu Tsujita、Takatoshi Kinoshita：“使用晶体振荡器观察玻璃化转变”高分子科学技术学会论文集 46。（1997）。

大室 渉・吉水 広明・辻田 義治・木下 隆利: "水晶発振子上の高分子薄膜の粘弾性" 高分子学会予稿集. 46. 3803-3804 (1997)

Wataru Omuro、Hiroaki Yoshimizu、Yoshiharu Tsujita、Takatoshi Kinoshita：“石英晶体振荡器上聚合物薄膜的粘弹性”聚合物科学技术学会论文集 46. 3803-3804 (1997)。

M.Torimaru, N.Atsumi, H.Yoshimizu, Y.Tsujita, and T.Kinoshita: "Sorption and Permeation of Super Critical CO_2 Fluid for Polymers" Polymer Preprints, Japan. Vol.44-No.5. 758 (1995)

M.Torimaru、N.Atsumi、H.Yoshimizu、Y.Tsujita 和 T.Kinoshita：“聚合物超临界 CO_2 流体的吸附和渗透”聚合物预印本，日本。

筒井 皇晶・勝又 俊行・辻田 義治・吉水 広明・木下 隆利: "シンジオタクチックポリスチレンの微細構造と気体及び有機蒸気の収着特性" 高分子学会予稿集. 45. 2964-2965 (1996)

Kosho Tsutsui、Toshiyuki Katsumata、Yoshiharu Tsujita、Hiroaki Yoshimizu、Takatoshi Kinoshita：“间同立构聚苯乙烯的精细结构以及气体和有机蒸气的吸附性能”高分子科学技术学会论文集 45。2964-2965（1996）。

烏丸幹雄、渥美直哉、吉水広明、辻田義治、木下隆利: "超臨界CO_2流体の高分子への収着およびその透過性" 高分子学会予稿集. 44. 758-758 (1995)

Mikio Karasuma、Naoya Atsumi、Hiroaki Yoshimizu、Yoshiharu Tsujita、Takatoshi Kinoshita：“超临界 CO_2 流体对聚合物的吸附及其渗透性”聚合物科学技术学会论文集 44. 758-758 (1995)。