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首页> 外文期刊>Polymers for advanced technologies >A bio-safe cyclophosphazene derivative flame retardant forpolylactic acidcomposites: Flammability and cytotoxicity
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A bio-safe cyclophosphazene derivative flame retardant forpolylactic acidcomposites: Flammability and cytotoxicity

机译：生物安全环磷腈衍生物阻燃性酸性酸性酸：易燃性和细胞毒性

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摘要

An efficient bio-safe cyclophosphazene flame retardant, 1,5,9,13,16,20-Hexaoxa-7,14,21-triaza-6 lambda(4),8 lambda(4),5 lambda(4)-triphosphatrispiro[5.1.5.1.5.1]heneicosa-6,8(14),15(21)-triene (HCPO), was synthesized, and then was incorporated into polylactic acid (PLA) to improve the fire safety. The chemical structure of HCPO was confirmed by Fourier-transformed infrared spectroscopy, mass spectrometry, and nuclear magnetic resonance spectroscopy. The thermal stability of the compound was characterized by thermogravimetric (TG) analyzer. The cytotoxic effects of HCPO to cells were evaluated. Fire behavior and thermal stability of PLA composites were investigated by vertical burning, limiting oxygen index (LOI), TG analysis, and cone calorimeter. The morphology of residual charring was observed by scanning electron microscope. The results showed HCPO was bio-safe, and highly effective to enhance the flame retardancy of PLA composites. The LOI value was increased from 18.4 to 27.5 and UL-94 grade achieved V-0 for the PLA composite containing only 2% HCPO and 2% pentaerythrotol. It was demonstrated that intermolecular cross-linking reaction between pentaerythrotol and HCPO in high temperature range could accelerate the formation of compact char layers.
机译：合成了一种高效的生物安全型环磷腈阻燃剂1,5,9,13,16,20-六氧杂-7,14,21-三氮杂-6-λ（4），8-λ（4），5-λ（4）-三磷酸三螺旋[5.1.5.1.5.1]heneicosa-6,8（14），15（21）-三烯（HCPO），并将其加入聚乳酸（PLA）中以提高防火安全性。通过傅里叶变换红外光谱、质谱和核磁共振光谱证实了HCPO的化学结构。用热重分析仪（TG）对化合物的热稳定性进行了表征。评价HCPO对细胞的毒性作用。通过垂直燃烧、极限氧指数（LOI）、热重分析和锥形量热仪研究了PLA复合材料的燃烧行为和热稳定性。用扫描电镜观察了残余炭化的形貌。结果表明，HCPO具有生物安全性，能有效提高PLA复合材料的阻燃性能。LOI值从18.4增加到27.5，对于仅含有2%HCPO和2%五红醇的PLA复合材料，UL-94等级达到V-0。结果表明，在高温范围内，五红醇与HCPO之间的分子间交联反应可以加速致密炭层的形成。

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  • 来源
    《Polymers for advanced technologies》 |2021年第1期|共11页
  • 作者

    Xue Qingxia; Wu Quan; Yao Yuan; Li Xinjian; Sun Jun; Gu Xiaoyu; Song Weiguo; Yan Fang; Zhang Sheng;

  • 作者单位

    Weifang Med Univ Sch Pharm Shandong Engn Lab Marine Rehabil Drugs &

    Special Weifang 261053 Peoples R China;

    Beijing Univ Chem Technol Beijing Key Lab Adv Funct Polymer Composites Beijing Peoples R China;

    Beijing Univ Chem Technol Beijing Key Lab Adv Funct Polymer Composites Beijing Peoples R China;

    Weifang Med Univ Sch Pharm Shandong Engn Lab Marine Rehabil Drugs &

    Special Weifang 261053 Peoples R China;

    Beijing Univ Chem Technol Beijing Key Lab Adv Funct Polymer Composites Beijing Peoples R China;

    Beijing Univ Chem Technol Beijing Key Lab Adv Funct Polymer Composites Beijing Peoples R China;

    Weifang Med Univ Sch Pharm Shandong Engn Lab Marine Rehabil Drugs &

    Special Weifang 261053 Peoples R China;

    Weifang Med Univ Sch Pharm Shandong Engn Lab Marine Rehabil Drugs &

    Special Weifang 261053 Peoples R China;

    Beijing Univ Chem Technol Beijing Key Lab Adv Funct Polymer Composites Beijing Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 高分子化合物工业（高聚物工业）;高分子化学（高聚物）;
  • 关键词

    cyclophosphazene; flame retardant; polylactic acid; synthesis;

    机译：环磷腈;阻燃剂;聚乳酸;合成;

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