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首页> 外文期刊>Journal of Applied Polymer Science >Halloysite nanotubes immobilized by chitosan/tannic acid complex as a green flame retardant for bamboo fiber/poly(lactic acid) composites
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Halloysite nanotubes immobilized by chitosan/tannic acid complex as a green flame retardant for bamboo fiber/poly(lactic acid) composites

机译：由壳聚糖/单宁酸复合物固定的Halloysite Nanotubes作为竹纤维/聚（乳酸）复合材料的绿色阻燃剂

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摘要

In order to develop an environmentally benign flame retardant for bamboo/PLA composites (BPC), chitosan (CS) and tannic acid (TA) were used as cationic and anionic polyelectrolyte respectively to stabilize halloysite nanotubes (HNT) on the surface of bamboo fiber (BF) and poly(lactic acid) (PLA). Mechanical performance tests showed that the flexural properties of BPC were moderately enhanced with the addition of HNT, while the incorporation of CS/TA complex (FR) exhibited a slight increase. The results of thermogravimetric analysis demonstrated that CS/TA complex and HNT improved the thermal stability of the BPC synergistically, which increased the char residue. Limiting oxygen index and cone calorimetry tests were used to study the flammability of BPC and the results showed that the addition of CS/TA complex and HNT had a synergistic effect on the flame retardant performance of BPC materials. The macroscopic and microscopic morphological studies confirmed the formation of HNT layer in the matrix of BPC/5FR@5HNT samples, which facilitated more stabile char residue with the best flame retardant performance.
机译：为了开发竹纤维/聚乳酸复合材料（BPC）的环保阻燃剂，分别以壳聚糖（CS）和单宁酸（TA）为阳离子和阴离子聚电解质，将埃洛石纳米管（HNT）稳定在竹纤维（BF）和聚乳酸（PLA）表面。力学性能测试表明，添加HNT后，BPC的弯曲性能略有提高，而CS/TA复合物（FR）的掺入量略有增加。热重分析结果表明，CS/TA配合物和HNT协同提高了BPC的热稳定性，增加了残炭量。采用极限氧指数法和锥形量热法研究了BPC的阻燃性能，结果表明，CS/TA络合物和HNT的加入对BPC材料的阻燃性能有协同效应。宏观和微观形态研究证实了BPC基质中HNT层的形成/5FR@5HNT样品，这有助于更稳定的残炭，具有最好的阻燃性能。

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