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首页> 外文期刊>Journal of Applied Polymer Science >Studies of the Water Permeability and Mechanical Properties of a Flm Made of an Ethyl Cellulose-Ethanol-Water Ternary Mixture
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Studies of the Water Permeability and Mechanical Properties of a Flm Made of an Ethyl Cellulose-Ethanol-Water Ternary Mixture

机译：乙基纤维素-乙醇-水三元混合物制膜的透水性和机械性能的研究

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摘要

A water permeability study of ethyl cellulose (EC) film made from an EC-ethanol-water ternary mixture is presented.EC films were prepared by pouring the solution onto a polycarbonate plate and by spraying.The results reveal that the permeability of water,estimated by diffusion experiments,increases as the amount of the onosolvent increases in the liquid-liquid demixing process.In addition,a relative decrease in the evaporation rate of ethanol compared to that of water following an increase in casting temperature or a higher EC concentration produces a membrane with lower permeability.A mechanical evaluation of the films is also presented.Addition of water to the solvent leads to decreases in the modulus of elasticity,stress,and elongation,due to changes in the morphology of the film.The surface of the film was visualized by SEM photomicrography.
机译：进行了由EC-乙醇-水三元混合物制得的乙基纤维素（EC）薄膜的水渗透性研究，通过将溶液倒在聚碳酸酯板上并喷雾制备EC薄膜，结果表明，估计了水的渗透性通过扩散实验，随着液-液混合过程中溶剂溶剂量的增加，其增加。此外，随着铸造温度的升高或较高的EC浓度，乙醇的蒸发速率相对于水的蒸发速率相对降低，从而产生了薄膜的机械性能评估。由于薄膜形态的变化，向溶剂中添加水会导致弹性模量，应力和伸长率降低。通过SEM显微照相观察。

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