In situ dielectric characterization of dynamic orientation for polymer molecular chains

Shen, Guancheng; Zhang, Yi; Wang, Yun-Ming; Yu, Wei; Huang, Zhaoyang; Li, Maoyuan; Zhang, Yun; Zhou, Huamin

doi:10.1016/j.snb.2020.128024

Cited by 8 publications

(2 citation statements)

References 29 publications

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“…Generally, the orientation structure of the molecular chain would result in the mechanical and rheological performance of the material 42 . To comprehensively investigate the role of microfiber structure, it was inevitable to survey the relationship between hot stretch ratio (HSR) and tensile strength/elongation at break at different temperatures.…”

Section: Resultsmentioning

confidence: 99%

“…Importantly, it was clearly observed that the

σ

of composite fibers at 240°C and 250°C were higher than that of the neat PMMA. This behavior was attributed to the improvement on the entanglement of the molecular chain, 41,42 resulting from the construction of orientation structure with “head‐to‐tail” (Figure 2). Afterwards, the mechanical comparison corresponded to the rheological performance of microfiber orientation could confirm that elongation at break were greatly attributed to microfiber orientation.…”

Section: Resultsmentioning

confidence: 99%

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Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO₂) composite microspheres in twin‐screw extruder

Cui

Zhang

Zhu

et al. 2022

J of Applied Polymer Sci

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The dispersion and orientation arrangement of functional polymers with fillers are critical to their performance. However, there are rare detailed researches on the visualization of the orientation process about functional fillers in composite melts and the mechanistic effects on performance. In this work, it explored the change process of the orientation morphology for polyacrylate/silica (PAcr/SiO2) composite microspheres in polymethyl methacrylate (PMMA) at different melting temperatures. Afterwards, the morphology and distribution of oriented microfibers in composite fibers melted at different temperatures were observed by transmission electron microscope (TEM). The results showed that composite microfibers could be formed in tight arrangement and obtained average orientation of 50.88 in the composite fibers at 250°C. Under this circumstance, the addition of nano SiO2 particles had no effect on the rheological type. Meanwhile, the shear stress was 99.29% higher than that of pure PMMA system under the same conditions. As for the elongation at break, it was found that the elongation at break of the composite fiber prepared at 250°C was 169.43% higher than that of pure PMMA. Therefore, it provided a new method to achieve well dispersion of functional fillers in molten systems. Furthermore, it was beneficial to enhance the elongation at break of functional composites.

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Section: Resultsmentioning

confidence: 99%

“…Importantly, it was clearly observed that the

σ

Section: Resultsmentioning

confidence: 99%

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO₂) composite microspheres in twin‐screw extruder

Cui

Zhang

Zhu

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

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A Constitutive Model Describing Molecular Configuration Evolution and Transient Rheological Behavior of Entangled Polymer Solutions

Shen

Zhou

et al. 2021

Chin J Polym Sci

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A novel non-destructive testing approach for asphalt concrete density measurement based on coplanar capacitance: Theory, numerical simulation, and experiment

Yao,

Chen,

Dong

et al. 2025

Construction and Building Materials

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In situ dielectric characterization of dynamic orientation for polymer molecular chains

Cited by 8 publications

References 29 publications

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO₂) composite microspheres in twin‐screw extruder

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO₂) composite microspheres in twin‐screw extruder

A Constitutive Model Describing Molecular Configuration Evolution and Transient Rheological Behavior of Entangled Polymer Solutions

A novel non-destructive testing approach for asphalt concrete density measurement based on coplanar capacitance: Theory, numerical simulation, and experiment

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In situ dielectric characterization of dynamic orientation for polymer molecular chains

Cited by 8 publications

References 29 publications

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO2) composite microspheres in twin‐screw extruder

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO2) composite microspheres in twin‐screw extruder

A Constitutive Model Describing Molecular Configuration Evolution and Transient Rheological Behavior of Entangled Polymer Solutions

A novel non-destructive testing approach for asphalt concrete density measurement based on coplanar capacitance: Theory, numerical simulation, and experiment

Contact Info

Product

Resources

About

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO₂) composite microspheres in twin‐screw extruder

Effect of melting temperatures on the orientation and rheology of polyacrylate/silica (PAcr/SiO₂) composite microspheres in twin‐screw extruder