Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 22, Issue 17, Pages -Publisher
MDPI
DOI: 10.3390/ijms22179631
Keywords
microcrystalline cellulose; phytic acid; phosphorylation; flame retardant; functionalization
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This study functionalized microcrystalline cellulose (MCC) through phosphorylation reaction with phytic acid (PA) to enhance its flame retardancy, providing a novel strategy for the phosphorylation of cellulose with potential applications in flame retardant materials.
The functionalization of microcrystalline cellulose (MCC) is an important strategy for broadening its application fields. In the present work, MCC was functionalized by phosphorylation reaction with phytic acid (PA) for enhanced flame retardancy. The conditions of phosphorylation reaction including PA concentration, MCC/PA weight ratio and temperature were discussed, and the thermal degradation, heat release and char-forming properties of the resulting PA modified MCC were studied by thermogravimetric analysis and pyrolysis combustion flow calorimetry. The PA modified MCC, which was prepared at 90 degrees C, 50%PA and 1:3 weight ratio of MCC to PA, exhibited early thermal dehydration with rapid char formation as well as low heat release capability. This work suggests a novel strategy for the phosphorylation of cellulose using PA and reveals that the PA phosphorylated MCC can act as a promising flame retardant material.
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