Dynamic Cure Kinetics and Physical-Mechanical Properties of PEG/Nanosilica/Epoxy Composites
This study investigated the effect of polyethylene glycol (PEG) and nanosilica (NS) on the physical-mechanical properties and cure kinetics of diglycidyl ether of bisphenol-A-based epoxy (DGEBA-based EP) resin. For this purpose, tensile and viscometry tests, dynamic mechanical thermal analysis (DMTA...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2020/7908343 |
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| _version_ | 1849414297985220608 |
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| author | Haleh Nowruzi Varzeghani Iraj Amiri Amraei Seyed Rasoul Mousavi |
| author_facet | Haleh Nowruzi Varzeghani Iraj Amiri Amraei Seyed Rasoul Mousavi |
| author_sort | Haleh Nowruzi Varzeghani |
| collection | DOAJ |
| description | This study investigated the effect of polyethylene glycol (PEG) and nanosilica (NS) on the physical-mechanical properties and cure kinetics of diglycidyl ether of bisphenol-A-based epoxy (DGEBA-based EP) resin. For this purpose, tensile and viscometry tests, dynamic mechanical thermal analysis (DMTA), and differential scanning calorimetry (DSC) were carried out under dynamic conditions. The results showed that adding NS and PEG enhances the maximum cure temperature as well as the heat of cure reaction (ΔH) in EP-NS, while it decreases in EP-PEG and EP-PEG-NS. The cure kinetic parameters of EP-PEG-NS were calculated by Kissinger, Ozawa, and KSA methods and compared with each other. The Ea calculated from the Kissinger method (96.82 kJ/mol) was found to be lower than that of the Ozawa method (98.69 kJ/mol). Also, according to the KAS method, the apparent Ea was approximately constant within the 10-90% conversion range. Tensile strength and modulus increased by adding NS, while tensile strength diminished slightly by adding PEG to EP-NS. The glass transition temperature (Tg) was calculated using DMTA which was increased and decreased by the addition of NS and PEG, respectively. The results of the viscometry test showed that the viscosity increased with the presence of both PEG and NS and it prevented the deposition of solid particles. |
| format | Article |
| id | doaj-art-74420aaa6f0c4af9acfc21701f8cdd7b |
| institution | Kabale University |
| issn | 1687-9422 1687-9430 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Polymer Science |
| spelling | doaj-art-74420aaa6f0c4af9acfc21701f8cdd7b2025-08-20T03:33:53ZengWileyInternational Journal of Polymer Science1687-94221687-94302020-01-01202010.1155/2020/79083437908343Dynamic Cure Kinetics and Physical-Mechanical Properties of PEG/Nanosilica/Epoxy CompositesHaleh Nowruzi Varzeghani0Iraj Amiri Amraei1Seyed Rasoul Mousavi2Department of Material Science and Manufacturing Technology, Malek Ashtar University of Technology, Tehran 158751774, IranDepartment of Material Science and Manufacturing Technology, Malek Ashtar University of Technology, Tehran 158751774, IranDepartment of Material Science and Manufacturing Technology, Malek Ashtar University of Technology, Tehran 158751774, IranThis study investigated the effect of polyethylene glycol (PEG) and nanosilica (NS) on the physical-mechanical properties and cure kinetics of diglycidyl ether of bisphenol-A-based epoxy (DGEBA-based EP) resin. For this purpose, tensile and viscometry tests, dynamic mechanical thermal analysis (DMTA), and differential scanning calorimetry (DSC) were carried out under dynamic conditions. The results showed that adding NS and PEG enhances the maximum cure temperature as well as the heat of cure reaction (ΔH) in EP-NS, while it decreases in EP-PEG and EP-PEG-NS. The cure kinetic parameters of EP-PEG-NS were calculated by Kissinger, Ozawa, and KSA methods and compared with each other. The Ea calculated from the Kissinger method (96.82 kJ/mol) was found to be lower than that of the Ozawa method (98.69 kJ/mol). Also, according to the KAS method, the apparent Ea was approximately constant within the 10-90% conversion range. Tensile strength and modulus increased by adding NS, while tensile strength diminished slightly by adding PEG to EP-NS. The glass transition temperature (Tg) was calculated using DMTA which was increased and decreased by the addition of NS and PEG, respectively. The results of the viscometry test showed that the viscosity increased with the presence of both PEG and NS and it prevented the deposition of solid particles.http://dx.doi.org/10.1155/2020/7908343 |
| spellingShingle | Haleh Nowruzi Varzeghani Iraj Amiri Amraei Seyed Rasoul Mousavi Dynamic Cure Kinetics and Physical-Mechanical Properties of PEG/Nanosilica/Epoxy Composites International Journal of Polymer Science |
| title | Dynamic Cure Kinetics and Physical-Mechanical Properties of PEG/Nanosilica/Epoxy Composites |
| title_full | Dynamic Cure Kinetics and Physical-Mechanical Properties of PEG/Nanosilica/Epoxy Composites |
| title_fullStr | Dynamic Cure Kinetics and Physical-Mechanical Properties of PEG/Nanosilica/Epoxy Composites |
| title_full_unstemmed | Dynamic Cure Kinetics and Physical-Mechanical Properties of PEG/Nanosilica/Epoxy Composites |
| title_short | Dynamic Cure Kinetics and Physical-Mechanical Properties of PEG/Nanosilica/Epoxy Composites |
| title_sort | dynamic cure kinetics and physical mechanical properties of peg nanosilica epoxy composites |
| url | http://dx.doi.org/10.1155/2020/7908343 |
| work_keys_str_mv | AT halehnowruzivarzeghani dynamiccurekineticsandphysicalmechanicalpropertiesofpegnanosilicaepoxycomposites AT irajamiriamraei dynamiccurekineticsandphysicalmechanicalpropertiesofpegnanosilicaepoxycomposites AT seyedrasoulmousavi dynamiccurekineticsandphysicalmechanicalpropertiesofpegnanosilicaepoxycomposites |