Enhanced thermal stability and flame retardancy of PLA through intumescent flame retardant with B-modified ZSM-5 as a synergistic agent
In order to improve the inherent flammability of polylactic acid (PLA) and make this new biodegradable material more widely used, B-modified ZSM-5 (B/Z5) was designed as synergistic agent of intumescent flame retardant (IFR), composed of ammonium polyphosphate (APP) and pentaerythritol (PER), and in...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Budapest University of Technology
2024-03-01
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| Series: | eXPRESS Polymer Letters |
| Subjects: | |
| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0012766&mi=cd |
| _version_ | 1797364533261500416 |
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| author | Xiaokun Zhai Qin Ma Jing Lu Yuwei Jin Ruiyan Zhang Faliang Luo |
| author_facet | Xiaokun Zhai Qin Ma Jing Lu Yuwei Jin Ruiyan Zhang Faliang Luo |
| author_sort | Xiaokun Zhai |
| collection | DOAJ |
| description | In order to improve the inherent flammability of polylactic acid (PLA) and make this new biodegradable material more widely used, B-modified ZSM-5 (B/Z5) was designed as synergistic agent of intumescent flame retardant (IFR), composed of ammonium polyphosphate (APP) and pentaerythritol (PER), and introduced into PLA/IFR (PLAs) to fabricate PLAs/B/Z5 composites by melt extrusion. The flame retardancy, surface morphology, and thermal stability of the composites were investigated by TG, LOI, UL-94, CCT, and SEM. The addition of B/Z5 makes the decomposition temperature of T5% as well as T10% of PLAs reduction in nitrogen atmosphere and carbon layer form in advance. UL-94 test shows the composites reach V-0 rating. LOI value also steadily increases, and the maximum value is 36.0% with B actual loading of 5.26% (recoded as 14B/Z5) in B/Z5. The PHRR decreases by 75% from 417.77 kW/m2 for pure PLA to 103.19 kW/m2 for PLAs/14B/Z5, and THR reduces from 92.78 to 19.26 MJ/m2, which decreases by about 80% and the char yield reaches 50%. This study provides a simple and green method for the preparation of high flame-retardant PLA, which has a broad practical application prospect. |
| first_indexed | 2024-03-08T16:36:39Z |
| format | Article |
| id | doaj.art-d7cf4ab0814346d3802cbd18dee0040c |
| institution | Directory Open Access Journal |
| issn | 1788-618X |
| language | English |
| last_indexed | 2024-03-08T16:36:39Z |
| publishDate | 2024-03-01 |
| publisher | Budapest University of Technology |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj.art-d7cf4ab0814346d3802cbd18dee0040c2024-01-05T18:54:50ZengBudapest University of TechnologyeXPRESS Polymer Letters1788-618X2024-03-0118332633610.3144/expresspolymlett.2024.23Enhanced thermal stability and flame retardancy of PLA through intumescent flame retardant with B-modified ZSM-5 as a synergistic agentXiaokun ZhaiQin MaJing LuYuwei JinRuiyan ZhangFaliang LuoIn order to improve the inherent flammability of polylactic acid (PLA) and make this new biodegradable material more widely used, B-modified ZSM-5 (B/Z5) was designed as synergistic agent of intumescent flame retardant (IFR), composed of ammonium polyphosphate (APP) and pentaerythritol (PER), and introduced into PLA/IFR (PLAs) to fabricate PLAs/B/Z5 composites by melt extrusion. The flame retardancy, surface morphology, and thermal stability of the composites were investigated by TG, LOI, UL-94, CCT, and SEM. The addition of B/Z5 makes the decomposition temperature of T5% as well as T10% of PLAs reduction in nitrogen atmosphere and carbon layer form in advance. UL-94 test shows the composites reach V-0 rating. LOI value also steadily increases, and the maximum value is 36.0% with B actual loading of 5.26% (recoded as 14B/Z5) in B/Z5. The PHRR decreases by 75% from 417.77 kW/m2 for pure PLA to 103.19 kW/m2 for PLAs/14B/Z5, and THR reduces from 92.78 to 19.26 MJ/m2, which decreases by about 80% and the char yield reaches 50%. This study provides a simple and green method for the preparation of high flame-retardant PLA, which has a broad practical application prospect.http://www.expresspolymlett.com/letolt.php?file=EPL-0012766&mi=cd poly(lactic acid) thermogravimetric analysis injection molding melt blendingblends |
| spellingShingle | Xiaokun Zhai Qin Ma Jing Lu Yuwei Jin Ruiyan Zhang Faliang Luo Enhanced thermal stability and flame retardancy of PLA through intumescent flame retardant with B-modified ZSM-5 as a synergistic agent eXPRESS Polymer Letters poly(lactic acid) thermogravimetric analysis injection molding melt blending blends |
| title | Enhanced thermal stability and flame retardancy of PLA through intumescent flame retardant with B-modified ZSM-5 as a synergistic agent |
| title_full | Enhanced thermal stability and flame retardancy of PLA through intumescent flame retardant with B-modified ZSM-5 as a synergistic agent |
| title_fullStr | Enhanced thermal stability and flame retardancy of PLA through intumescent flame retardant with B-modified ZSM-5 as a synergistic agent |
| title_full_unstemmed | Enhanced thermal stability and flame retardancy of PLA through intumescent flame retardant with B-modified ZSM-5 as a synergistic agent |
| title_short | Enhanced thermal stability and flame retardancy of PLA through intumescent flame retardant with B-modified ZSM-5 as a synergistic agent |
| title_sort | enhanced thermal stability and flame retardancy of pla through intumescent flame retardant with b modified zsm 5 as a synergistic agent |
| topic | poly(lactic acid) thermogravimetric analysis injection molding melt blending blends |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0012766&mi=cd |
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