聚苯胺碳化产物表面和体相结构表征

Study on the configurations of superficial and bulk phase of the carbonized production of polyaniline resin

测试分析了聚苯胺树脂碳化产物表面和体相结构 .结果表明聚苯胺树脂碳化产物比表面积随碳化温度升高而下降 .在 70 0℃和 10 0 0℃还原性气氛中碳化处理的样品与 6 2 0℃处理的样品相比 ,比表面积分别下降了约 8.3 %和 33 .7% .在相同温度条件下 ,惰性气氛中碳化处理的样品比表面积低于还原性气氛中碳化处理的样品 .聚苯胺树脂碳化产物表面中的氮主要以两种不同的基团结构形式存在 ,并且树脂碳化产物表面的氮含量随着碳化处理温度升高逐渐降低 .聚苯胺 6 2 0℃碳化处理时主要是树脂中的含氮基团发生变化 ,而其他结构基团变化较小 .70 0℃碳化处理后则开始大规模碳化裂解 .但 10 0 0℃碳化处理后的样品仍含有少量的碳氢键和氮氢键 .10 0 0℃碳处理的树脂碳化样品开始形成多碳稠环 。

The configurations of superficial and bulk phase of polyaniline resin carbons were to be test analysis.The result indicated that the specific surface of polyaniline resin carbon were declined with the carbonize temperature to hoist.To compare with the sample treated at 620 ℃,the specific surfaces of samples treated at 700 ℃ and 1 000 ℃ in reducibility ambience descended 8.3% and 33.7% respectively.The specific surfaces of samples processed in the inertia ambience were lower than that of samples processed in the reduction ambience under the identical treating temperature condition.Nitrogen of specific surface of polyaniline resin carbon were existed chiefly with two kinds of different bases groups,and the nitrogen contents of specific surface reduced along with the carbonized temperature goes up gradually,When polyaniline resin treated at 620 ℃,the nitrogen fabric groups take place change,and that other fabric groups changes are smaller.But begin the large-scale carbonization cracking when the resin treated at 70 ℃,and yet the sample after 1 000 ℃ treating still contains a small amount of C-H and N-H keys.The result also indicated that the more carbon condensed ring have been formed and to be changed in order direction when the resin carbonized at 1 000 ℃.