Issue 73, 2018

Renewable vanillin based flame retardant for poly(lactic acid): a way to enhance flame retardancy and toughness simultaneously

Abstract

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.

Graphical abstract: Renewable vanillin based flame retardant for poly(lactic acid): a way to enhance flame retardancy and toughness simultaneously

Supplementary files

Article information

Article type
Paper
Submitted
15 Okt 2018
Accepted
09 Dez 2018
First published
18 Dez 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 42189-42199

Renewable vanillin based flame retardant for poly(lactic acid): a way to enhance flame retardancy and toughness simultaneously

P. Zhao, Z. Liu, X. Wang, Y. Pan, I. Kuehnert, M. Gehde, D. Wang and A. Leuteritz, RSC Adv., 2018, 8, 42189 DOI: 10.1039/C8RA08531E

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