In Situ Mineralization of Chitosan‐Modified Calcium Hydroxystannate for Flame‐Retardant and Eco‐Friendly Bamboo Materials
Year: 2025
Type: article
Abstract: The global plastic pollution crisis has heightened interest in sustainable alternatives such as bamboo, with the “bamboo‐for‐plastics” initiative providing a low‐carbon strategy. While bamboo‐derived products (e.g., furniture, textiles) may potentially reduce plastic dependency, achieving simultaneous flame retardancy and mechanical robustness in engineered bamboo presents a significant challenge. Herein, a green approach is reported that utilizes in situ synthesis to prepare non‐toxic, halogen‐free calcium hydroxystannate (CSH), which is further modified by partial Ca 2+ substitution with chitosan (CS) cations. Bamboo treated with CSH demonstrated exceptional flame retardancy, with reductions of 37.14% in peak heat release rate (PHRR), 27.28% in total heat release (THR), and 48.06% in total smoke release (TSR) compared to untreated controls. The incorporation of CS simultaneously improved mechanical performance without compromising flame resistance, with the NB‐3Ca‐2Cs‐Sn composite achieving optimal compressive strength, representing a 17.5% increase, alongside a minimal weight gain of 4.56%. This synergistic CSH‐CS mineralisation strategy combines straightforward preparation, effective flame suppression, and mechanical reinforcement, enhancing bamboo's viability for scalable applications in fireproof construction materials.
Source: Advanced Sustainable Systems
Institution: Hebei University
Language: English
Subfield: Polymers and Plastics
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4415462226