Authors
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Zhao, P.-C. ; Liu, Z.Q. ; Wang, X. ; Pan, Y.-T. ; Kühnert, I. ; Gehde, M. ; Wang, De-Yi ; Leuteritz, A.
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Title
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Renewable vanillin based flame retardant for poly(lactic acid): a way to enhance flame retardancy and toughness simultaneously
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Date
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06.02.2018
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Number
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56365
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Abstract
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In this study, a novel bio-based flame retardant material consisting of modified vanillin and poly(lactic acid) (PLA) was developed by incorporation of newly discovered additive, bis(5-formyl-2-methoxyphenyl) phenylphosphonate (VP), into the PLA matrix. The chemical structure of VP was confirmed by 1H-, 13C- and 31P NMR and FTIR. The flame retardancy, thermal behavior as well as the mechanical properties of PLA/VP composites were evaluated. With 5 wt% of VP, the LOI of PLA increased from 21.4 to 25.8 and passed the UL-94 V-0 classification. Additionally, the elongation at break was improved from 3% to 11% without sacrificing tensile strength. In an effort to understand the mechanisms, TGA-FTIR, TGA and SEM were performed. This paper suggests a new possibility to prepare polymeric composites with enhanced flame retardancy from sustainable resources.
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Publisher
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RSC Advances
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Wikidata
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Citation
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RSC Advances 8 (2018) 42189-42199
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DOI
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https://doi.org/10.1039/C8RA08531E
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Tags
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