期刊名称：Advance Journal of Food Science and Technology
印刷版ISSN：2042-4868
电子版ISSN：2042-4876
出版年度：2016
卷号：10
期号：10
页码：807-813
DOI：10.19026/ajfst.10.2266
出版社：MAXWELL Science Publication
摘要：Analysis on pyrolysis and Infrared process by TG-FTIR using Platycladus orientalis in different particle size. The results show that Platycladus orientalis pyrolysis process can be divided into four stages: the first stage from 30 to120C, which most caused by water molecules adsorpted on the surface of Platycladus orientalis samples during thermal desorption, free water and bound water evaporate in this stage, with a mass loss of 5%. The second stage from 120 to170C involves the pyrolysis of hemicelluloses and unstable cellulose, with a mass loss of 4%. The third stage from 200 to 400C. Maximum pyrolysis rate is about achieved in this stage at 365C, weight loss of this stage is about 50%, due to the thermal decomposition of cellulose, including dehydration, depolymerization and decomposition of anhydroglucose unit. In the final stage, which occurs beyond 430C, the pyrolysis of lignin and charring of cellulose occur. In the three-dimensional IR spectrum, the Platycladus orientalis samples exhibit higher absorbance at 200, 525, 830, 1100 and 1420 sec during thermal decomposition. The smaller particle size can be decomposing more thoroughly and rapidly. The particle size of Platycladus orientalis samples which less than 0 mm has a smaller influence on the thermal decomposition. Wood vinegar is formed from the pyrolysis stage until the charring stage.
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