Enhanced flame retardant performance of poly(vinyl alcohol) composites based on phosphorus-metal ion synergistic effect

Natural polysaccharides with intrinsic flame retardant, biodegradable, and environment-friendly capability have received considerable attention. Sodium alginate (SA) is considered a promising synergist for improving fire retardance. Herein, flame retardant poly(vinyl alcohol) (FR-PVA) composites con...

Full description

Saved in:
Bibliographic Details
Published in:New journal of chemistry 2023-08, Vol.47 (34), p.15942-1595
Main Authors: Liu, Yide, Yao, Jiuyong, Li, Kai, Li, Xiankai, Xia, Yanzhi
Format: Article
Language:English
Subjects:
Biomedical materials
Composite materials
Fire protection
Fire safety
Flame retardants
Hydrogen bonding
Polysaccharides
Polyvinyl alcohol
Sodium alginate
Synergistic effect
Textiles
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Natural polysaccharides with intrinsic flame retardant, biodegradable, and environment-friendly capability have received considerable attention. Sodium alginate (SA) is considered a promising synergist for improving fire retardance. Herein, flame retardant poly(vinyl alcohol) (FR-PVA) composites containing ammonium polyphosphate (APP) and SA are produced by a facile blending method with a lower loading of 15%, which exhibit an ideal limited oxygen index (30.2%), UL-94 V-0 rating, high heat release reduction (42.7%), and self-extinguishing properties. SA not only retards the agglomeration of APP with negatively charged groups, but also enhances flame retardance by catalyzing the formation of char carbon. Hydrogen bonding between PVA and SA induced a physical cross-linked network inhibiting the movement of PVA molecules, thereby affording anti-dripping properties and mechanical strength. This study provides a new scenario of FR-PVA composites with high transparence, environmental friendliness, and fire safety applicable in packaging, home textiles, and biomaterials. Flame retardant PVA composites with enhanced anti-dripping performance were fabricated by the construction of hydrogen bonding and a physical cross-linked network based on phosphorous-metal ions synergistic effect.
ISSN:1144-0546
1369-9261
DOI:10.1039/d3nj02686h