Title:
Flame Retardant Modification of Polylactic Acid/Bamboo Fiber Composites using Aluminum Diethyl Pyrophosphate, Melamine Cyanurate, and Polyethylene Glycol (Prepublished)
Author(s):
Yu Feng, Yihong Song, Zhenyu Guo, Wenfeng Li, Tengfei Yu, Shuaitao Wang, Peilong Guo, Kebing Wen, Wenxi Cheng, Weiqiang Song, Zhiwei Jiang
Publication:
Materials Journal
Volume:
Issue:
Appears on pages(s):
Keywords:
bamboo fiber; flame retardants; polyethylene glycol; polylactic acid
DOI:
10.14359/51749414
Date:
12/18/2025
Abstract:
A twin-screw extruder was employed to melt-blend polylactic acid (PLA), bamboo fibers (BF), aluminum diethyl pyrophosphate (ADP), melamine cyanurate (MCA), and polyethylene glycol (PEG). In the PLA/BF/PEG ternary composite, increasing PEG dosage reduced mechanical properties. Conversely, in the PLA/BF/ADP/MCA/PEG multicomposite, higher PEG content enhanced mechanical performance. Compared with PLA/BF composites, the addition of ADP, MCA, and PEG increased the melt flow index by over 15-fold, with MCA-containing composites showing a 24-fold improvement. Both PEG-containing and non-PEG PLA/BF/ADP/MC composites achieved UL94 V-0 flame retardancy ratings, with oxygen barriers ranging between 24 and 26 vol%. Importantly, while maintaining the UL94 V-0 rating, the introduction of PEG improved mechanical properties through more uniform dispersion of bamboo fibers.