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首页> 外文期刊>Journal of Applied Polymer Science >Migration of Antifog Additives in Agricultural Films of Low-Density Polyethylene and Ethylene-Vinyl Acetate Copolymers
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Migration of Antifog Additives in Agricultural Films of Low-Density Polyethylene and Ethylene-Vinyl Acetate Copolymers

机译：防雾添加剂在低密度聚乙烯和乙烯-乙酸乙烯酯共聚物农用薄膜中的迁移

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In this work, polymer films of low density polyethylene and ethylene-vinyl acetate copolymers containing two types of antifog additives (nonionic surfactants) were exposed to two simulated horticultural greenhouse environments, reproducing hot and cold climate conditions. The evolution of the antifog effect was visually observed and that of the additive concentration measured using Fourier transform infrared spectroscopy (FTIR). All the films studied showed good antifog properties, but in all cases, the duration of the antifog effect was longer in the hot-climate test. From the FTIR, we can conclude that the additives Studied showed a low migration rate and, therefore, when the antifog effect is lost, important quantities of the additive remain in the bulk. (C) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 2299-2307, 2009
机译：在这项工作中，将含有两种防雾添加剂（非离子表面活性剂）的低密度聚乙烯和乙烯-乙酸乙烯酯共聚物的聚合物薄膜暴露于两种模拟的园艺温室环境中，从而再现了冷热气候条件。目测观察到防雾作用的演变，并使用傅立叶变换红外光谱法（FTIR）测量了添加剂浓度的演变。所有研究的薄膜均显示出良好的防雾性能，但在所有情况下，在热气候试验中，防雾效果的持续时间均更长。从FTIR，我们可以得出结论，研究的添加剂显示出较低的迁移速率，因此，当防雾效果丧失时，大量的添加剂会保留在主体中。 （C）2008 Wiley Periodicals，Inc. J Appl Polym Sci 111：2299-2307，2009年

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