Mechanism of Morphology Development in HDGEBA/PAMS Hybrid Thermosets: Monte Carlo Simulation and LSCM Study
Reactive combinations of aliphatic epoxy resins and functional polysiloxanes form a class of hybrid thermosetting materials with properties that may come from both the organic and the inorganic phases. The two typically immiscible phases form a suspension whose morphology, composition, and thermal p...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-12-01
|
| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/14/24/5375 |
| _version_ | 1797455579365507072 |
|---|---|
| author | María G. González Javier Pozuelo Juan C. Cabanelas María B. Serrano Juan Baselga |
| author_facet | María G. González Javier Pozuelo Juan C. Cabanelas María B. Serrano Juan Baselga |
| author_sort | María G. González |
| collection | DOAJ |
| description | Reactive combinations of aliphatic epoxy resins and functional polysiloxanes form a class of hybrid thermosetting materials with properties that may come from both the organic and the inorganic phases. The two typically immiscible phases form a suspension whose morphology, composition, and thermal properties vary with curing time. The aim of this research was to elucidate the mechanism by which morphology changed with time and to simulate it through Metropolis-Monte Carlo. The selected system was hydrogenated epoxy (HDGEBA) and a synthetic polyaminosiloxane (PAMS). It was studied by DSC, FTnIR, gel point, viscometry, and in-situ laser scanning confocal microscopy. A mechanism for morphology generation was proposed and simulated, exploring a wide range of values of the “a priori” relevant variables. The essential features were captured by simulations with a reasonable agreement with experimental data. However, the complete process was more complex than the geometrical approach of the simulation. The main deviations that were found and qualitatively explained are: (i) the induction period on the rate of coalescence, and (ii) PAMS-rich domain average size increases faster than predictions. |
| first_indexed | 2024-03-09T15:56:19Z |
| format | Article |
| id | doaj.art-45a1dafd9aa24e939a63c402e7aa58f0 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T15:56:19Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-45a1dafd9aa24e939a63c402e7aa58f02023-11-24T17:31:00ZengMDPI AGPolymers2073-43602022-12-011424537510.3390/polym14245375Mechanism of Morphology Development in HDGEBA/PAMS Hybrid Thermosets: Monte Carlo Simulation and LSCM StudyMaría G. González0Javier Pozuelo1Juan C. Cabanelas2María B. Serrano3Juan Baselga4Department of Materials Science and Engineering and Chemical Engineering, IAAB, University Carlos III of Madrid, 28911 Leganés, SpainDepartment of Materials Science and Engineering and Chemical Engineering, IAAB, University Carlos III of Madrid, 28911 Leganés, SpainDepartment of Materials Science and Engineering and Chemical Engineering, IAAB, University Carlos III of Madrid, 28911 Leganés, SpainDepartment of Materials Science and Engineering and Chemical Engineering, IAAB, University Carlos III of Madrid, 28911 Leganés, SpainDepartment of Materials Science and Engineering and Chemical Engineering, IAAB, University Carlos III of Madrid, 28911 Leganés, SpainReactive combinations of aliphatic epoxy resins and functional polysiloxanes form a class of hybrid thermosetting materials with properties that may come from both the organic and the inorganic phases. The two typically immiscible phases form a suspension whose morphology, composition, and thermal properties vary with curing time. The aim of this research was to elucidate the mechanism by which morphology changed with time and to simulate it through Metropolis-Monte Carlo. The selected system was hydrogenated epoxy (HDGEBA) and a synthetic polyaminosiloxane (PAMS). It was studied by DSC, FTnIR, gel point, viscometry, and in-situ laser scanning confocal microscopy. A mechanism for morphology generation was proposed and simulated, exploring a wide range of values of the “a priori” relevant variables. The essential features were captured by simulations with a reasonable agreement with experimental data. However, the complete process was more complex than the geometrical approach of the simulation. The main deviations that were found and qualitatively explained are: (i) the induction period on the rate of coalescence, and (ii) PAMS-rich domain average size increases faster than predictions.https://www.mdpi.com/2073-4360/14/24/5375hydrogenated glycidyl ether of bisphenol Apoly(3-aminopropylmethyl-siloxane)LSCMMonte Carlo simulation |
| spellingShingle | María G. González Javier Pozuelo Juan C. Cabanelas María B. Serrano Juan Baselga Mechanism of Morphology Development in HDGEBA/PAMS Hybrid Thermosets: Monte Carlo Simulation and LSCM Study Polymers hydrogenated glycidyl ether of bisphenol A poly(3-aminopropylmethyl-siloxane) LSCM Monte Carlo simulation |
| title | Mechanism of Morphology Development in HDGEBA/PAMS Hybrid Thermosets: Monte Carlo Simulation and LSCM Study |
| title_full | Mechanism of Morphology Development in HDGEBA/PAMS Hybrid Thermosets: Monte Carlo Simulation and LSCM Study |
| title_fullStr | Mechanism of Morphology Development in HDGEBA/PAMS Hybrid Thermosets: Monte Carlo Simulation and LSCM Study |
| title_full_unstemmed | Mechanism of Morphology Development in HDGEBA/PAMS Hybrid Thermosets: Monte Carlo Simulation and LSCM Study |
| title_short | Mechanism of Morphology Development in HDGEBA/PAMS Hybrid Thermosets: Monte Carlo Simulation and LSCM Study |
| title_sort | mechanism of morphology development in hdgeba pams hybrid thermosets monte carlo simulation and lscm study |
| topic | hydrogenated glycidyl ether of bisphenol A poly(3-aminopropylmethyl-siloxane) LSCM Monte Carlo simulation |
| url | https://www.mdpi.com/2073-4360/14/24/5375 |
| work_keys_str_mv | AT mariaggonzalez mechanismofmorphologydevelopmentinhdgebapamshybridthermosetsmontecarlosimulationandlscmstudy AT javierpozuelo mechanismofmorphologydevelopmentinhdgebapamshybridthermosetsmontecarlosimulationandlscmstudy AT juanccabanelas mechanismofmorphologydevelopmentinhdgebapamshybridthermosetsmontecarlosimulationandlscmstudy AT mariabserrano mechanismofmorphologydevelopmentinhdgebapamshybridthermosetsmontecarlosimulationandlscmstudy AT juanbaselga mechanismofmorphologydevelopmentinhdgebapamshybridthermosetsmontecarlosimulationandlscmstudy |