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首页> 外文期刊>Journal of Applied Polymer Science >Fabrication of porous polylactic acid films assisted by dip-coating and template leaching techniques
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Fabrication of porous polylactic acid films assisted by dip-coating and template leaching techniques

机译：浸涂和模板浸出技术辅助制备多孔聚乳酸膜

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摘要

A new simple method was developed to fabricate porous polylactic acid (PLA) films coated directly on substrates. The PLA films with a controllable thickness were realized using a dip-coating technique. The pore structure of the resulting porous PLA films was tailored by utilizing phase inversion process and template leaching techniques. The experimental results show that the resulting PLA films became thicker when using the coating solution with a higher viscosity or applying a faster withdrawal speed. The porous structures (pore size and void density) of the resulting PLA films are significantly influenced by the polymer concentration, the nonsolvents, and the addition of poly(ethylene glycol) templates. The analyses of solubility parameters was utilized to explain the porous structures of the resulting PLA films in details.
机译：开发了一种新的简单方法来制造直接涂覆在基材上的多孔聚乳酸（PLA）膜。使用浸涂技术可实现厚度可控的PLA膜。利用相转化工艺和模板浸出技术对所得多孔PLA膜的孔结构进行了定制。实验结果表明，当使用粘度更高的涂料溶液或以更快的抽提速度喷涂时，所得的PLA膜变得更厚。所得PLA膜的多孔结构（孔径和空隙密度）受聚合物浓度，非溶剂和聚（乙二醇）模板的添加影响很大。溶解度参数分析用于详细解释所得PLA膜的多孔结构。

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