二氧化氯缓释保鲜纸保鲜涂液配方优化

研究二氧化氯缓释保鲜纸保鲜涂液配方，为木质纤维类绿色保鲜材料的研发提供技术支持。保鲜涂液由氧化淀粉胶、氢氧化钠、亚氯酸钠等在一定工艺条件下复配制得，以纸基为载体，以亚氯酸钠为二氧化氯的前驱体，通过控制酸活化剂的量与作用时间，达到控制二氧化氯缓释的目的。以氧化淀粉胶含量、亚氯酸钠质量分数、氢氧化钠含量和酒石酸质量分数为影响因素，通过正交试验，确定保鲜纸基中亚氯酸钠留存率及保鲜体系中二氧化氯释放规律。采用回归分析的方法对结果进行拟合，利用SPSS分析软件进行处理，得到保鲜涂液各因素对保鲜纸基中亚氯酸钠留存率半衰期T0.5、保鲜体系中二氧化氯最大释放速率Kmax、二氧化氯最大释放速率所在时间tmax和二氧化氯释放总量Z总等指标的影响。通过所建立的目标方程，确定保鲜涂液的最佳配方为：氧化淀粉胶含量0.7 g/张、亚氯酸钠质量分数15%、氢氧化钠含量0.3 g/张、酒石酸质量分数15%。

Optimization of the Formulation of Preservative Coating Used in Slow-Releasing ClO2 Preservative Paper

This study focused on the formulation of slow-releasing chlorine dioxide preservative paper in order to provide
theoretical support for the development of wood fiber-based green packaging materials. Preservative coating was made by
mixing oxidized starch adhesive, NaOH and NaClO2. The preservative paper was made on the basis of paper taking NaClO2
as the precursor of ClO2. Slow-releasing ClO2 was then achieved by controlling tartaric acid content and interaction time.
Taking oxidized starch adhesive, NaOH, NaClO2 and tartaric acid concentration as the experimental factors, orthogonal
design was implemented to ascertain NaClO2 residual rate and ClO2 releasing pattern in the preservative system. The
experimental data were regressed with SPSS to reveal the influence of three coating ingredients on half life of NaClO2
residual rate, the maximum ClO2 releasing speed, the time needed to achieve maximum releasing speed and total amount of
released ClO2. Results showed that the optimum formulation of preservative coating consisted of 0.7 g of oxidized starch
adhesive per sheet, 15% NaClO2, 0.3 g of NaOH per sheet and 15% tartaric acid in B paper.