摘要
为了解国产烟草样品的热失重情况,对部分国产烟草样品进行了热重分析。结果表明:①在室温～500℃,烟草的非等温失重过程由失去吸附水和结晶水、小分子化合物挥发和分解、大分子化合物的裂解和结焦过程4个阶段组成,其热解的主要阶段在220～410℃;②可以根据热失重DTG曲线将烤烟、白肋烟和香料烟烟叶区分开;③膨胀烟丝和再造烟叶与膨胀梗丝的热失重性质有明显差异,膨胀烟丝和再造烟叶的热失重性质比较接近;④2007年云南、湖南、湖北、河南和福建生产的K326的C3F烟叶样品的热失重TG曲线变化不大,但其热失重DTG曲线具有一定的差异,主要反映在不同阶段热失重量的差异。
The thermogravimetric analysis of several domestic tobacco samples was conducted. The results showed that ： 1 ） from room temperature to 500 ℃, under the non-isothermal conditions, tobacco goes through 4 stages, i.e. loss of adsorbed water and crystal water, volatilization and decomposition of small molecule compounds, pyrolysis of macromolecular compounds, and coking, the pyrolysis takes place mianly between 220 ℃and 410 ℃ ; 2 ） flue-cured, burley and oriental tobacco leaves are recognizable by their differential thermogravimetric （DTG） curves; 3） thermogravimetric character of expanded tobacco is similar to that of reconstituted tobacco, it is significantly different from that of expanded cut stem ; 4） there are some differences between DTG curves of C3F of cultivar K326 grown in Yunnan, Hunan, Hubei, Henan and Fujian Provinces in 2007, mainly in their weight-loss at different stages.
出处
《烟草科技》
EI
CAS
北大核心
2009年第9期47-49,共3页
Tobacco Science & Technology
基金
国家烟草专卖局重点科技项目"中式卷烟风格特征剖析"(项目号:312008AA0090)
关键词
烟草
热重
差热分析
Tobacco
Thermogravimetric analysis
Differential thermal analysis
