Using a parallel-plate rheometer equipped with a partitioned plate and the Sentmanat extensional rheometer fixture, a full rheological characterization of several commercial ionomers (sodium and zinc) and their corresponding parent copolymers has been carried out. Particular emphasis has been placed on the distribution of the relaxation times to identify the characteristic times, such as reptation, Rouse, and lifetime of associations that are associated with entanglements, ionic and hydrogen bonding associations. As such, scaling laws have been used to calculate the order of magnitude of these characteristic times that are important parameters to gain a better understanding of their rheological behavior. To study the effects of ionic reversible associations, the commercial ionomers were completely un-neutralized and their rheological behavior was compared directly with their associative counterparts. The rheological comparison included the linear viscoelastic moduli, the damping function, and extensional rheology, demonstrating the significant effects of ionic interactions. Moreover, the rheological properties of sodium and zinc ionomers are also compared addressing the effect of valency of ions (Na+ vs Zn++).Using a parallel-plate rheometer equipped with a partitioned plate and the Sentmanat extensional rheometer fixture, a full rheological characterization of several commercial ionomers (sodium and zinc) and their corresponding parent copolymers has been carried out. Particular emphasis has been placed on the distribution of the relaxation times to identify the characteristic times, such as reptation, Rouse, and lifetime of associations that are associated with entanglements, ionic and hydrogen bonding associations. As such, scaling laws have been used to calculate the order of magnitude of these characteristic times that are important parameters to gain a better understanding of their rheological behavior. To study the effects of ionic reversible associations, the commercial ionomers were completely un-neutralized and their rheological behavior was compared directly with their associative counterparts. The rheological comparison included the linear viscoelastic moduli, the damping function, and extensional ...

中文翻译：

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钠和锌离聚物的流变学：中和和化合价的影响

使用配备有分隔板和 Sentmanat 拉伸流变仪夹具的平行板流变仪，对几种商业离聚物（钠和锌）及其相应的母体共聚物进行了完整的流变学表征。特别强调了弛豫时间的分布，以确定特征时间，例如与纠缠、离子和氢键缔合相关的关联的爬行、劳斯和寿命。因此，缩放定律已被用于计算这些特征时间的数量级，这些特征时间是更好地了解其流变行为的重要参数。为了研究离子可逆缔合的影响，商业离聚物完全未中和，直接将其流变行为与其缔合对应物进行比较。流变比较包括线性粘弹性模量、阻尼函数和拉伸流变，证明了离子相互作用的显着影响。此外，还比较了钠离子和锌离子聚合物的流变特性，以解决离子化合价（Na+ 与 Zn++）的影响。使用配备有分隔板和 Sentmanat 拉伸流变仪夹具的平行板流变仪，可以对几种离子进行完整的流变表征已经进行了商业离聚物（钠和锌）及其相应的母体共聚物。特别强调了弛豫时间的分布以识别特征时间，例如与纠缠、离子和氢键缔合相关的关联的爬行、劳斯和寿命。因此，缩放定律已被用于计算这些特征时间的数量级，这些特征时间是更好地了解其流变行为的重要参数。为了研究离子可逆缔合的影响，商业离聚物完全未中和，并将它们的流变行为直接与其缔合对应物进行比较。流变比较包括线性粘弹性模量、阻尼函数和拉伸... 标度定律已被用于计算这些特征时间的数量级，这些特征时间是更好地了解其流变行为的重要参数。为了研究离子可逆缔合的影响，商业离聚物完全未中和，并将它们的流变行为直接与其缔合对应物进行比较。流变比较包括线性粘弹性模量、阻尼函数和拉伸... 标度定律已被用于计算这些特征时间的数量级，这些特征时间是更好地了解其流变行为的重要参数。为了研究离子可逆缔合的影响，商业离聚物完全未中和，并将它们的流变行为直接与其缔合对应物进行比较。流变比较包括线性粘弹性模量、阻尼函数和拉伸...