Quantitative detection method for caprolactam in bio-based food packaging film

Abstract

The invention discloses a quantitative detection method of caprolactam in a bio-based food packaging film, which comprises the following steps: preparing a bio-based food packaging film sample, and dividing the bio-based food packaging film sample into a modeling set and a prediction set; respectively carrying out near-infrared spectrum acquisition and mid-infrared spectrum acquisition on each sample; respectively measuring the content of caprolactam in each sample; performing low-level fusion on the near infrared spectrum data and the intermediate infrared spectrum data of each sample; respectively preprocessing the spectral data of each sample; establishing a near infrared spectrum correction model, an intermediate infrared spectrum correction model, a near-intermediate infrared low-level fusion spectrum correction model and a near-intermediate infrared high-level fusion spectrum correction model by utilizing the modeling set; respectively predicting the content of caprolactam in each sample in the prediction set; and measuring the content of caprolactam in a sample to be measured by using the optimal prediction correction model. According to the method, the content of caprolactam in the bio-based food packaging film can be rapidly and accurately detected.

Description

Technical field [0001] The invention relates to the technical field of caprolactam detection, in particular to a quantitative detection method for caprolactam in bio-based food packaging films. Background technique [0002] At present, food safety problems caused by traditional plastic packaging have become more prominent. Therefore, vigorously promoting low-carbon, green bio-based degradable food packaging materials is the only way to solve the current food packaging problems in my country. Kederan polysaccharides are a kind of polysaccharides that can not only form elastic thermoreversible gels but also heat irreversible gels after heating its suspension. It has excellent film-forming properties and can be applied to bio-based Food packaging materials. Caprolactam can be polymerized to obtain nylon-6 fibers and nylon-6 engineering plastics, and nylon-6 can be used as food packaging films. In the polymer polymerization process of converting caprolactam to nylon, the conversion...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a quantitative detection method for caprolactam in bio-based food packaging films, so as to solve the problem of cumbersome pretreatment process, long time-consuming, sample damage, environmental pollution, and inability to quickly detect caprolactam in food packaging in the prior art. and monitoring issues

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