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首页> 外文期刊>Journal of Applied Polymer Science >Determination of the formaldehyde-to-phenol molar ratios of resol resins by infrared spectroscopy and multivariate analvsis
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Determination of the formaldehyde-to-phenol molar ratios of resol resins by infrared spectroscopy and multivariate analvsis

机译：红外光谱法和多元分析法测定甲阶酚醛树脂的甲醛/苯酚摩尔比

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摘要

The formaldehyde/phenol (F/P) ratios of resol resins were successfully predicted by the recording of infrared (IR) spectra of both calibration and analyzed resins and by a multivariate analysis technique. In the creation of applicable models, the best correlating IR spectral areas were found between 1800 and 700 cm(-1). The positive effects of the increasing replicates and the omission of first-derivative preprocessing on model quality were proven by systematic testing. The characteristic statistical parameters were acceptable when the resin was similar to the calibration resins. Although the calibration samples had narrow F/P molar ratios (2.00-2.40), or a particular urea content or alkalinity, the best calibration model could also successfully predict the F/P molar ratios of resins with greater F/P ratios, higher urea contents, and lower alkalinity. (C) 2003 Wiley Periodicals, Inc. [References: 15]
机译：通过记录校准和分析树脂的红外（IR）光谱和多元分析技术，成功预测了可熔酚醛树脂的甲醛/苯酚（F / P）比。在创建适用模型的过程中，发现最佳关联的红外光谱区域介于1800和700 cm（-1）之间。通过系统测试证明了不断增加的重复和省略一阶导数预处理对模型质量的积极影响。当树脂与校准树脂相似时，特征统计参数是可以接受的。尽管校准样品的F / P摩尔比很窄（2.00-2.40），或者具有特定的尿素含量或碱度，但最佳的校准模型也可以成功地预测F / P比例更高，尿素含量更高的树脂的F / P摩尔比。含量低的碱度。 （C）2003 Wiley Periodicals，Inc. [参考：15]

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