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A bio-based durable reactive flame retardant for cotton fabric based on lentinan
Yulong Qu1, Peng Qi2, Feng Chen1
1State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, 100029, PR China; Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, PR China.
Researchers developed a novel flame retardant, ammonium phosphate of lentinan (APLNT), for cotton fabric. This durable, bio-based treatment enhances flame resistance while maintaining fabric softness for everyday use.
Area of Science:
- Materials Science
- Textile Chemistry
- Polymer Science
Background:
- Cotton fabric's comfort and breathability are widely utilized, but its flammability restricts applications.
- Development of durable, bio-based flame retardants for textiles, especially cotton, is challenging.
- Existing flame retardants often compromise fabric softness and durability.
Purpose of the Study:
- To synthesize and graft a novel polysaccharide-based flame retardant onto cotton fabric.
- To evaluate the flame retardancy and durability of the treated cotton fabric.
- To assess the impact of the flame retardant treatment on the fabric's softness.
Main Methods:
- Synthesis of ammonium phosphate of lentinan (APLNT).
- Grafting APLNT onto the surface of cotton fabric.
- Evaluation of flame retardancy using Limiting Oxygen Index (LOI) and Vertical Burning Test (VBT).
- Assessment of durability through 50 laundering cycles.
- Evaluation of fabric softness post-treatment.
Main Results:
- Treated cotton fabric achieved a high LOI of 43.3% and passed the VBT with 21.1% weight gain of APLNT.
- Significant reduction in peak heat release rate (92.8%) and total heat release (50.9%) compared to control cotton.
- Excellent durability, retaining flame retardancy (LOI 27.0%) after 50 laundering cycles.
- The treated fabric maintained its softness.
Conclusions:
- A novel, durable, bio-based flame retardant (APLNT) was successfully developed for cotton fabric.
- The APLNT treatment significantly enhances flame retardancy without negatively impacting fabric softness.
- This provides a promising strategy for creating safe and comfortable flame-retardant textiles for daily applications.
