Evidence of Nanostructure Development from the Molecular Dynamics of Poly(pentamethylene 2,5-furanoate),Macromolecules

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Evidence of Nanostructure Development from the Molecular Dynamics of Poly(pentamethylene 2,5-furanoate)
Macromolecules ( IF 5.1 ) Pub Date : 2020-11-25 , DOI: 10.1021/acs.macromol.0c02297
Daniel E. Martínez-Tong _{1,

2} , Michelina Soccio ₃ , Beatriz Robles-Hernández _{1,

2} , Giulia Guidotti ₃ , Massimo Gazzano ₄ , Nadia Lotti ₃ , Angel Alegria _{1,

2}

Affiliation

We report on the molecular origin of poly(pentamethylene 2,5-furanoate)’s particular physical properties. From the structural point of view, we found that this polymer can develop crystallinity when stored under room conditions for months. On the other hand, we used broadband dielectric spectroscopy measurements to analyze in great detail the local and segmental molecular dynamics of the material subjected to several thermal treatments. In this way, we evidenced that the molecular dynamics are sensitive to thermal history over a broad temperature range. This behavior has been attributed to possible interchain interactions detected via infrared spectroscopy and rheology measurements in the noncrystallized polymer.

中文翻译：

从聚五亚甲基2,5-呋喃酸酯的分子动力学研究纳米结构的发展

我们报告了聚（五亚甲基2,5-呋喃酸酯）的特殊物理性质的分子起源。从结构的角度来看，我们发现这种聚合物在室温下存放数月后会形成结晶。另一方面，我们使用宽带介电谱测量来详细分析经过多种热处理的材料的局部和分段分子动力学。这样，我们证明了分子动力学对很宽的温度范围内的热历史很敏感。该行为归因于在非结晶聚合物中通过红外光谱和流变学测量检测到的可能的链间相互作用。

更新日期：2020-12-08

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