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المؤلفBelyamani, Imane
المؤلفHassan, Mohammad K.
تاريخ الإتاحة2023-02-02T04:34:12Z
تاريخ النشر2020
اسم المنشورPolymers
المصدرScopus
معرّف المصادر الموحدhttp://dx.doi.org/10.3390/POLYM12051179
معرّف المصادر الموحدhttp://hdl.handle.net/10576/39388
الملخصThe 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).
راعي المشروعThis publication is made possible by the Qatar University Collaborative Grant No. QUCG-CAM-2018\2019-2. The findings achieved here in are solely the responsibility of the authors. The publication of this article was funded by the Qatar National Library.: We gratefully thank Joshua Otaigbe for his technical assistance with the P-glass preparation and data discussion. The technical support of the Wiggin's research group at the University of Southern Mississippi in the acquisition of the DMA data is also gratefully acknowledged.
اللغةen
الناشرMDPI AG
الموضوعBroadband dielectric spectroscopy
Chemical mechanism
Inorganic phosphate glass
Molecular chain dynamics
Polyamide 66
العنوانEffect of different phosphate glass compositions on the process-induced macromolecular dynamics of polyamide 66
النوعArticle
رقم العدد5
رقم المجلد12
dc.accessType Open Access


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