Accelerated weathering studies of bioepoxy/ionic liquid blends: influence on physical, thermo-mechanical, morphology and surface properties
Ionic liquids are promising candidates with huge potential in combination with thermosetting polymers. However, the behavior of ionic liquid modified epoxy system towards outdoor environmental conditions are seldom reported. Therefore, it is interesting to study the effect of accelerated weathering...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ab6e87 |
| _version_ | 1827869050305249280 |
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| author | Harikrishnan Pulikkalparambil Sanjay Mavinkere Rangappa Senthilkumar Krishnasamy Sabarish Radoor Nishar Hameed Suchart Siengchin Jyotishkumar Parameswaranpillai |
| author_facet | Harikrishnan Pulikkalparambil Sanjay Mavinkere Rangappa Senthilkumar Krishnasamy Sabarish Radoor Nishar Hameed Suchart Siengchin Jyotishkumar Parameswaranpillai |
| author_sort | Harikrishnan Pulikkalparambil |
| collection | DOAJ |
| description | Ionic liquids are promising candidates with huge potential in combination with thermosetting polymers. However, the behavior of ionic liquid modified epoxy system towards outdoor environmental conditions are seldom reported. Therefore, it is interesting to study the effect of accelerated weathering on ionic liquid modified bioepoxy blends. In this work, bio-based epoxy resin and 1-Butyl-3-methylimidazolium chloride (BMIM[Cl]) ionic liquid blends were prepared by melt mixing method. The concentration of ionic liquid used was 0, 5, 10, 20, and 30 phr. The miscibility, morphology, thermo-mechanical, and surface hydrophilicity of the ionic liquid modified bioepoxy blends were studied before and after the accelerated weathering test. The miscibility of the blends was studied by Fourier transform infrared spectroscopy (FTIR). The FTIR results demonstrate the presence of charge transfer complexation reaction between ionic liquid and bioepoxy resin. The tensile strength and modulus were reduced while the elongation at break is increased with the addition of ionic liquid. On the other hand, the glass transition temperature and thermal stability of the bioepoxy blends were reduced with the addition of ionic liquid. The contact angle value increases with the incorporation of up to 10 phr ionic liquid, this is followed by a decrease. The interaction between the ionic liquid and bioepoxy resin has vanished after the weathering test. The elongation at break was reduced dramatically after the weathering test, especially for 20 and 30 phr blends. The thermal stability of the weathered samples is similar to that of the samples before weathering. While the T _g values of the blends are stable with respect to neat bioepoxy resin. On the other hand, the contact angle value of the bioepoxy blends increased after the weathering test due to the increased surface roughness after weathering. |
| first_indexed | 2024-03-12T15:39:32Z |
| format | Article |
| id | doaj.art-ba884910bccb4c088856adbebfd7d825 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:39:32Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-ba884910bccb4c088856adbebfd7d8252023-08-09T16:02:58ZengIOP PublishingMaterials Research Express2053-15912020-01-017202530210.1088/2053-1591/ab6e87Accelerated weathering studies of bioepoxy/ionic liquid blends: influence on physical, thermo-mechanical, morphology and surface propertiesHarikrishnan Pulikkalparambil0https://orcid.org/0000-0001-6257-661XSanjay Mavinkere Rangappa1https://orcid.org/0000-0001-8745-9532Senthilkumar Krishnasamy2Sabarish Radoor3Nishar Hameed4Suchart Siengchin5https://orcid.org/0000-0002-6635-5686Jyotishkumar Parameswaranpillai6https://orcid.org/0000-0002-3809-8598Department of Mechanical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut’s University of Technology North Bangkok , Bangkok, ThailandDepartment of Mechanical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut’s University of Technology North Bangkok , Bangkok, ThailandDepartment of Mechanical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut’s University of Technology North Bangkok , Bangkok, ThailandDepartment of Mechanical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut’s University of Technology North Bangkok , Bangkok, ThailandSwinburne University of Technology , Faculty of Science, Engineering and Technology, Hawthorn, VIC, 3122, AustraliaDepartment of Mechanical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut’s University of Technology North Bangkok , Bangkok, ThailandCenter of Innovation in Design and Engineering for Manufacturing, King Mongkut’s University of Technology North Bangkok , Bangsue, Bangkok 10800, ThailandIonic liquids are promising candidates with huge potential in combination with thermosetting polymers. However, the behavior of ionic liquid modified epoxy system towards outdoor environmental conditions are seldom reported. Therefore, it is interesting to study the effect of accelerated weathering on ionic liquid modified bioepoxy blends. In this work, bio-based epoxy resin and 1-Butyl-3-methylimidazolium chloride (BMIM[Cl]) ionic liquid blends were prepared by melt mixing method. The concentration of ionic liquid used was 0, 5, 10, 20, and 30 phr. The miscibility, morphology, thermo-mechanical, and surface hydrophilicity of the ionic liquid modified bioepoxy blends were studied before and after the accelerated weathering test. The miscibility of the blends was studied by Fourier transform infrared spectroscopy (FTIR). The FTIR results demonstrate the presence of charge transfer complexation reaction between ionic liquid and bioepoxy resin. The tensile strength and modulus were reduced while the elongation at break is increased with the addition of ionic liquid. On the other hand, the glass transition temperature and thermal stability of the bioepoxy blends were reduced with the addition of ionic liquid. The contact angle value increases with the incorporation of up to 10 phr ionic liquid, this is followed by a decrease. The interaction between the ionic liquid and bioepoxy resin has vanished after the weathering test. The elongation at break was reduced dramatically after the weathering test, especially for 20 and 30 phr blends. The thermal stability of the weathered samples is similar to that of the samples before weathering. While the T _g values of the blends are stable with respect to neat bioepoxy resin. On the other hand, the contact angle value of the bioepoxy blends increased after the weathering test due to the increased surface roughness after weathering.https://doi.org/10.1088/2053-1591/ab6e87Ionic liquidepoxyweatheringoutdoor applications |
| spellingShingle | Harikrishnan Pulikkalparambil Sanjay Mavinkere Rangappa Senthilkumar Krishnasamy Sabarish Radoor Nishar Hameed Suchart Siengchin Jyotishkumar Parameswaranpillai Accelerated weathering studies of bioepoxy/ionic liquid blends: influence on physical, thermo-mechanical, morphology and surface properties Materials Research Express Ionic liquid epoxy weathering outdoor applications |
| title | Accelerated weathering studies of bioepoxy/ionic liquid blends: influence on physical, thermo-mechanical, morphology and surface properties |
| title_full | Accelerated weathering studies of bioepoxy/ionic liquid blends: influence on physical, thermo-mechanical, morphology and surface properties |
| title_fullStr | Accelerated weathering studies of bioepoxy/ionic liquid blends: influence on physical, thermo-mechanical, morphology and surface properties |
| title_full_unstemmed | Accelerated weathering studies of bioepoxy/ionic liquid blends: influence on physical, thermo-mechanical, morphology and surface properties |
| title_short | Accelerated weathering studies of bioepoxy/ionic liquid blends: influence on physical, thermo-mechanical, morphology and surface properties |
| title_sort | accelerated weathering studies of bioepoxy ionic liquid blends influence on physical thermo mechanical morphology and surface properties |
| topic | Ionic liquid epoxy weathering outdoor applications |
| url | https://doi.org/10.1088/2053-1591/ab6e87 |
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