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Open AccessArticle

Effect of Different Phosphate Glass Compositions on the Process-Induced Macromolecular Dynamics of Polyamide 66

1
Department of Polymer Science and Engineering, The University of Southern Mississippi, 118 College Drive #5050, Hattiesburg, MS 39406, USA
2
Institut Supérieur de Plasturgie d’Alençon (ISPA), Campus d’Alençon, 61250 Damigny, France
3
Center for Advanced Materials, Qatar University, Doha P.O. Box 2713, Qatar
*
Authors to whom correspondence should be addressed.
Polymers 2020, 12(5), 1179; https://doi.org/10.3390/polym12051179
Received: 4 March 2020 / Revised: 12 April 2020 / Accepted: 15 April 2020 / Published: 21 May 2020
(This article belongs to the Special Issue Polymer Nanocomposites: Processing, Degradation and Applications)
The present study provides a fundamental understanding of the mechanism of action of special new phosphate glass (P-glass) systems, having different glass transition temperatures (Tg), in polyamide 66 (PA66). Dynamic mechanical analysis (DMA) revealed that the Tg of PA66/low Tg P-glass (ILT-1) was significantly shifted to a lower Tg (65 °C), and another transition appeared at high temperature (166 °C). This was supported by a drop in the melting point and the crystallinity of the PA66/ILT-1 hybrid material as detected by differential scanning calorimetry (DSC). The dielectric spectroscopic investigation on the networks’ molecular level structural variations (Tg and sub-Tg relaxations) agreed very well with the DMA and DSC findings. Contrary to intermediate Tg(IIT-3) and high Tg P-glass (IHT-1) based materials, the PA66/ILT-1 hybrid material showed an evidence of splitting the PA66 Tg relaxations into two peaks, thus confirming a strong interaction between PA66 and ILT-1 (low Tg P-glass). Nevertheless, the three different P-glass compositions did not show any effect on the PA66 sub-Tg relaxations (related to the –NH2 and –OH chain end groups’ motion). View Full-Text
Keywords: broadband dielectric spectroscopy; polyamide 66; inorganic phosphate glass; chemical mechanism; molecular chain dynamics broadband dielectric spectroscopy; polyamide 66; inorganic phosphate glass; chemical mechanism; molecular chain dynamics
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MDPI and ACS Style

Belyamani, I.; K. Hassan, M. Effect of Different Phosphate Glass Compositions on the Process-Induced Macromolecular Dynamics of Polyamide 66. Polymers 2020, 12, 1179. https://doi.org/10.3390/polym12051179

AMA Style

Belyamani I, K. Hassan M. Effect of Different Phosphate Glass Compositions on the Process-Induced Macromolecular Dynamics of Polyamide 66. Polymers. 2020; 12(5):1179. https://doi.org/10.3390/polym12051179

Chicago/Turabian Style

Belyamani, Imane; K. Hassan, Mohammad. 2020. "Effect of Different Phosphate Glass Compositions on the Process-Induced Macromolecular Dynamics of Polyamide 66" Polymers 12, no. 5: 1179. https://doi.org/10.3390/polym12051179

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