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AuthorBelyamani, Imane
AuthorHassan, Mohammad K.
Available date2023-02-02T04:34:12Z
Publication Date2020
Publication NamePolymers
ResourceScopus
URIhttp://dx.doi.org/10.3390/POLYM12051179
URIhttp://hdl.handle.net/10576/39388
AbstractThe 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).
SponsorThis 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.
Languageen
PublisherMDPI AG
SubjectBroadband dielectric spectroscopy
Chemical mechanism
Inorganic phosphate glass
Molecular chain dynamics
Polyamide 66
TitleEffect of different phosphate glass compositions on the process-induced macromolecular dynamics of polyamide 66
TypeArticle
Issue Number5
Volume Number12
dc.accessType Open Access


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