In order to encourage effective recycling of tobacco resources in the industry and successfully enhance the quality of reconstituted cut stems (GS30). This study investigates the thermal, structural, and material composition of GS30. It was found that compared with high-quality tobacco leaves and cut stems, the contents of important macromolecules including cellulose, hemicellulose and lignin in GS30 were 21.74 ± 1.14 %, 3.66 ± 0.56 %, and 1.69 ± 0.46 % respectively. Its content is smaller than that of blank cut stems but similar to high-quality tobacco leaves. The important macromolecular structures were further analyzed for their surface morphology and crystal structure using FTIR, XRD, SAXS, and SEM. After analyzing the thermal cracking behavior of GS30 through PY-GC-MS, it was found that GS30 has four weight loss stages and thermal cracking releases near 30 types of aroma substances, showing obvious advantages in releasing aromatic gases. This demonstrates that the structure of GS30 obtained from secondary processing of discarded tobacco leaves is loose and easy to burn and decompose, which can effectively reduce the release of cigarette tar.

为了鼓励行业内烟草资源的有效回收，并成功提高重组切梗（GS30）的质量。本研究调查了 GS30 的热学、结构和材料成分。结果发现，与优质烟叶和切梗相比，GS30中重要大分子纤维素、半纤维素和木质素的含量分别为21.74±1.14%、3.66±0.56%和1.69±0.46%。其含量低于毛切梗，但与优质烟叶相似。利用 FTIR、XRD、SAXS 和 SEM 进一步分析了重要大分子结构的表面形貌和晶体结构。通过PY-GC-MS分析GS30的热裂解行为发现，GS30具有四个失重阶段，热裂解释放出近30种香气物质，在释放芳香气体方面表现出明显的优势。这说明废弃烟叶二次加工得到的GS30结构疏松，易于燃烧分解，可以有效减少卷烟焦油的释放。