Effect of Different Phosphate Glass Compositions On the Process-Induced Macromolecular Dynamic of Polyamide 66

Authors

Imane Belyami, University of Southern Mississippi
Mohammad K. Hassan, Qatar UniversityFollow

Document Type

Article

Publication Date

5-21-2020

School

Polymer Science and Engineering

Abstract

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 (T_g), in polyamide 66 (PA66). Dynamic mechanical analysis (DMA) revealed that the T_g of PA66/low T_g P-glass (ILT-1) was significantly shifted to a lower T_g (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 (T_g and sub-T_g relaxations) agreed very well with the DMA and DSC findings. Contrary to intermediate T_g(IIT-3) and high T_g P-glass (IHT-1) based materials, the PA66/ILT-1 hybrid material showed an evidence of splitting the PA66 T_g relaxations into two peaks, thus confirming a strong interaction between PA66 and ILT-1 (low T_g P-glass). Nevertheless, the three different P-glass compositions did not show any effect on the PA66 sub-T_g relaxations (related to the –NH₂ and –OH chain end groups’ motion).

Comments

Published by Polymers at 10.3390/polym12051179.

Publication Title

Polymers

Volume

12

Issue

5

Recommended Citation

Belyami, I., Hassan, M. K. (2020). Effect of Different Phosphate Glass Compositions On the Process-Induced Macromolecular Dynamic of Polyamide 66. Polymers, 12(5).
Available at: https://aquila.usm.edu/fac_pubs/17483