Influence of Polymer-Clay Interfacial Interactions on the Ignition Time of Polymer/Clay Nanocomposites
Metal ions present on smectite clay (montmorillonite) platelets have preferential reactivity towards peroxy/alkoxy groups during polyamide 6 (PA6) thermal decomposition. This changes the decomposition pathway and negatively affects the ignition response of PA6. To restrict these interfacial interact...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2018
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| Online Access: | https://hdl.handle.net/10356/89003 http://hdl.handle.net/10220/44800 |
| _version_ | 1811689083561312256 |
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| author | Zope, Indraneel Suhas Dasari, Aravind Yu, Zhong-Zhen |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Zope, Indraneel Suhas Dasari, Aravind Yu, Zhong-Zhen |
| author_sort | Zope, Indraneel Suhas |
| collection | NTU |
| description | Metal ions present on smectite clay (montmorillonite) platelets have preferential reactivity towards peroxy/alkoxy groups during polyamide 6 (PA6) thermal decomposition. This changes the decomposition pathway and negatively affects the ignition response of PA6. To restrict these interfacial interactions, high-temperature-resistant polymers such as polyetherimide (PEI) and polyimide (PI) were used to coat clay layers. PEI was deposited on clay by solution-precipitation, whereas PI was deposited through a solution-imidization-precipitation technique before melt blending with PA6. The absence of polymer-clay interfacial interactions has resulted in a similar time-to-ignition of PA6/PEI-clay (133 s) and PA6/PI-clay (139 s) composites as neat PA6 (140 s). On the contrary, PA6 with conventional ammonium-based surfactant modified clay has showed a huge drop in time-to-ignition (81 s), as expected. The experimental evidences provided herein reveal the role of the catalytic activity of clay during the early stages of polymer decomposition. |
| first_indexed | 2024-10-01T05:42:28Z |
| format | Journal Article |
| id | ntu-10356/89003 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:42:28Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/890032023-07-14T15:51:29Z Influence of Polymer-Clay Interfacial Interactions on the Ignition Time of Polymer/Clay Nanocomposites Zope, Indraneel Suhas Dasari, Aravind Yu, Zhong-Zhen School of Materials Science & Engineering Time-to-ignition Thermo-oxidation Metal ions present on smectite clay (montmorillonite) platelets have preferential reactivity towards peroxy/alkoxy groups during polyamide 6 (PA6) thermal decomposition. This changes the decomposition pathway and negatively affects the ignition response of PA6. To restrict these interfacial interactions, high-temperature-resistant polymers such as polyetherimide (PEI) and polyimide (PI) were used to coat clay layers. PEI was deposited on clay by solution-precipitation, whereas PI was deposited through a solution-imidization-precipitation technique before melt blending with PA6. The absence of polymer-clay interfacial interactions has resulted in a similar time-to-ignition of PA6/PEI-clay (133 s) and PA6/PI-clay (139 s) composites as neat PA6 (140 s). On the contrary, PA6 with conventional ammonium-based surfactant modified clay has showed a huge drop in time-to-ignition (81 s), as expected. The experimental evidences provided herein reveal the role of the catalytic activity of clay during the early stages of polymer decomposition. NRF (Natl Research Foundation, S’pore) Published version 2018-05-16T04:16:29Z 2019-12-06T17:15:40Z 2018-05-16T04:16:29Z 2019-12-06T17:15:40Z 2017 2017 Journal Article Zope, I. S., Dasari, A., & Yu, Z.-Z. (2017). Influence of Polymer-Clay Interfacial Interactions on the Ignition Time of Polymer/Clay Nanocomposites. Materials, 10(8), 935-. 1996-1944 https://hdl.handle.net/10356/89003 http://hdl.handle.net/10220/44800 10.3390/ma10080935 207649 en Materials © 2017 by The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). 10 p. application/pdf |
| spellingShingle | Time-to-ignition Thermo-oxidation Zope, Indraneel Suhas Dasari, Aravind Yu, Zhong-Zhen Influence of Polymer-Clay Interfacial Interactions on the Ignition Time of Polymer/Clay Nanocomposites |
| title | Influence of Polymer-Clay Interfacial Interactions on the Ignition Time of Polymer/Clay Nanocomposites |
| title_full | Influence of Polymer-Clay Interfacial Interactions on the Ignition Time of Polymer/Clay Nanocomposites |
| title_fullStr | Influence of Polymer-Clay Interfacial Interactions on the Ignition Time of Polymer/Clay Nanocomposites |
| title_full_unstemmed | Influence of Polymer-Clay Interfacial Interactions on the Ignition Time of Polymer/Clay Nanocomposites |
| title_short | Influence of Polymer-Clay Interfacial Interactions on the Ignition Time of Polymer/Clay Nanocomposites |
| title_sort | influence of polymer clay interfacial interactions on the ignition time of polymer clay nanocomposites |
| topic | Time-to-ignition Thermo-oxidation |
| url | https://hdl.handle.net/10356/89003 http://hdl.handle.net/10220/44800 |
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