Fourier transform infrared (FTIR) spectroscopy was applied to determine the type of surface treatment and dose used on cork stoppers and to predict the friction between stopper and bottleneck. Agglomerated cork stoppers were finished with two different doses and using two surface treatments: P (paraffin and silicone), 15 and 25 mg/stopper, and S (only silicone), 10 and 15 mg/stopper. FTIR spectra were recorded at five points for each stopper by attenuated total reflectance (ATR). Absorbances at 1,010, 2,916, and 2,963 cm -1 were obtained in each spectrum. Discriminant analysis techniques allowed the treatment, and dose applied to each stopper to be identified from the absorbance values. 91.2% success rates were obtained from individual values and 96.0% from the mean values of each stopper. Spectrometric data also allowed treatment homogeneity to be determined on the stopper surface, and a multiple regression model was used to predict the friction index (If = Fe/Fc) (R 2 = 0.93)
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机译：应用傅里叶变换红外（FTIR）光谱法确定软木塞的表面处理类型和剂量，并预测塞子和瓶颈之间的摩擦。附聚的软木塞用两种不同的剂量完成，并使用两种表面处理：P（石蜡和有机硅），15和25 mg /塞，以及S（仅有机硅），10和15 mg /塞。通过衰减的全反射率（ATR）在每个塞子的五个点记录FTIR光谱。在每个光谱中获得1,010、2,916和2,963 cm -1的吸光度。判别分析技术允许进行处理，并根据吸光度值确定每个塞子的剂量。从单个值获得91.2％的成功率，从每个塞子的平均值获得96.0％的成功率。光谱数据还可以确定塞子表面的处理均匀性，并使用多元回归模型预测摩擦指数（If = Fe / Fc）（R 2 = 0.93）
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