Liquid Crystalline Polymers Compatibilization and Adhesion Enhancement by Reactive Blending in Post-Consumers PET’s
Journal Title: American Journal of Engineering and Applied Sciences - Year 2016, Vol 9, Issue 3
Abstract
Abstract A method for PET mechanical properties enhancement by reactive blending with HBA/HNA Liquid Crystalline Polymers for in situ highly fibrillar composites preparation is presented. LCP/PET blends were reactive extruded in presence of Pyromellitic Di-Anhydride (PMDA) and then characterized by Differential Scanning Calorimetry, Thermally Stimulated Currents and tensile mechanical properties. The formation of specific macromolecular structures, where the PET, the LCP and the reactive additive are involved, has been hypothesized in the reactively extruded blends from TSC analysis evidences. The use of a reactive additive improved the matrix LCP compatibilization and adhesion as indicated by the SEM analysis and mechanical testing. Moderate amounts of LCP in the PET (0.5 and 5%) and small amounts of thermo-active and reactive compatibilizer in the blend (0.3%) were found to significantly improve LCP melt dispersion, melts shear transfer and LCP fibril formation and adhesion. Blends of PET and LCP containing the compatibilizer favored the formation of a well dispersed and homogeneous fibrillar phase whose particle size distribution did not show great coarsening and coalescence leading to significant elastic properties improvements from 0.8 for not compatibilized to 3.1 GPa for compatibilized 0.5% LCP loaded PET blends that was even higher than those expected from ordinary theoretical calculation. This unexpected improvement was probably due to the presence of two distinct phases’ supra-molecular structures involving PET-LCP and PMDA. Copyright © 2016 Aversa Raffaella and Apicella Antonio. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Authors and Affiliations
Raffaella Aversa, Antonio Apicella
Keywords
Related Articles
- EP ID EP203022
- DOI 10.3844/ajeassp.2016.530.539
- Views 70
- Downloads 0
Gas Atomization of Molten Metal: Part I. Numerical Modeling Conception
Gas Atomization of Molten Metal: Part I. Numerical Modeling Conception Genaro Pérez-de León, Vincent E. Lamberti, Roland D. Seals, Taher M. Abu-Lebdeh and Sameer A. Hamoush DOI : 10.3844/ajeassp.2016.303.322 American J...
Robust and Efficient Controller to Design a Standalone Source Supplied DC and AC Load Powered by Photovoltaic Generator
Abstract The present work describes the analysis, modeling and control of a cascade DC-DC and DC-AC power conditioning stage to control a output voltage to supply a DC and AC load systems. To maximize energy extracted f...
Flexible Stem Trabecular Prostheses
Abstract The complex biomechanics and morphology of the femur proximal epiphysis are presented. This specific region in human femur is characterized by a high flexibility compared to that of other primates, since evolve...
Fast and Robust Maximum Power Point Tracking for Solar Photovoltaic Systems
Abstract Solar Photovoltaic (PV) energy is becoming an increasingly important part of the world's renewable energy. In order to develop technology for efficient energy conversion from a solar PV system, this paper studi...
Implementation Wireless Adapter Interface Module with Gateway Device for Connection to 4-20 mA Transmitters
Implementation Wireless Adapter Interface Module with Gateway Device for Connection to 4-20 mA Transmitters Waleed Ishaq Hameed, K. Ivica, Amar Al-jzari and Yasir I. Abdulraheem DOI : 10.3844/ajeassp.2017.669.678 Ameri...