Pascoal Neto C, Rocha J, Gil A, Cordeiro N, Esculcas A P, Rocha S, Delgadillo I, de Jesus J D, Correia A J
Department of Chemistry, University of Aveiro, Portugal.
Solid State Nucl Magn Reson. 1995 Mar;4(3):143-51. doi: 10.1016/0926-2040(94)00039-f.
The thermal decomposition of cork has been studied by Fourier transform infrared (FTIR) spectroscopy and 13C solid-state nuclear magnetic resonance (NMR) spectroscopy with cross-polarization and magic-angle spinning (CP-MAS), high-power 1H decoupling (HPDEC) and cross-polarization depolarization-polarization (CPDP). Waxes and other soluble components of cork begin to decompose at ca. 150 degrees C. This is accompanied by partial decomposition of suberin, probably initiated at the points of attachment to the cell wall. The carbohydrates begin to decompose at ca. 200 degrees C. The decomposition of lignin begins at 250-300 degrees C, while suberin undergoes further degradation. Significant amounts of coke are formed in the process. At 400 degrees C cork has been transformed into coke with traces of partially decomposed suberin. The thermal decomposition of cork is dependent on the calcination time, particularly in the 200-350 degrees C range.
通过傅里叶变换红外光谱（FTIR）以及采用交叉极化与魔角旋转（CP-MAS）、高功率质子去耦（HPDEC）和交叉极化去极化-极化（CPDP）的13C固体核磁共振（NMR）光谱，对软木塞的热分解进行了研究。软木塞中的蜡和其他可溶成分在约150℃时开始分解。这伴随着木栓质的部分分解，可能始于其与细胞壁的附着点。碳水化合物在约200℃时开始分解。木质素在250 - 300℃时开始分解，而此时木栓质会进一步降解。在此过程中会形成大量焦炭。在400℃时，软木塞已转化为焦炭，并伴有痕量的部分分解的木栓质。软木塞的热分解取决于煅烧时间，特别是在200 - 350℃范围内。
