State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230027, PR China.
J Hazard Mater. 2012 Mar 30;209-210:34-9. doi: 10.1016/j.jhazmat.2011.12.048. Epub 2012 Jan 16.
The well-dispersed poly(methyl methacrylate)/titanate nanotube (PMMA/TNT) composites were synthesized by in situ polymerization of methyl methacrylate (MMA) in ethanol solution. Thermal stability and the glass transition temperature of the composites are significantly enhanced with a proper amount of TNTs. The comparison between PMMA/TNTs and PMMA/TiO(2) composites suggests the formation of network in PMMA/TNTs composite. The coaction of dehydration and the network is believed to be the crucial factor which improves the thermal properties. TG-FTIR analysis shows that the amount of organic volatiles of PMMA is significantly reduced and the non-flammable CO(2) is generated after incorporating TNTs. It implies the reduced toxicity of the volatiles. The possible mechanism of the smoke suppression is proposed as the dehydration and adsorption effect of TNTs.
通过在乙醇溶液中甲基丙烯酸甲酯（MMA）的原位聚合，合成了分散良好的聚甲基丙烯酸甲酯/钛酸盐纳米管（PMMA/TNT）复合材料。适量的 TNTs 显著提高了复合材料的热稳定性和玻璃化转变温度。PMMA/TNTs 与 PMMA/TiO(2)复合材料的比较表明，在 PMMA/TNTs 复合材料中形成了网络。脱水和网络的共同作用被认为是改善热性能的关键因素。TG-FTIR 分析表明，加入 TNTs 后，PMMA 的有机挥发物含量显著降低，生成了不可燃的 CO(2)。这意味着挥发物的毒性降低了。提出了抑制烟雾的可能机制，即 TNTs 的脱水和吸附作用。
