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首页> 外文期刊>Journal of Polymers and the Environment >Environmental Degradation of Biodegradable Polyesters: 3. Effects of Alkali Treatment on Biodegradation of Poly(ε-Caprolactone) and Poly [(R)-3-Hydroxybuty rate) Films in Controled Soil
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Environmental Degradation of Biodegradable Polyesters: 3. Effects of Alkali Treatment on Biodegradation of Poly(ε-Caprolactone) and Poly [(R)-3-Hydroxybuty rate) Films in Controled Soil

机译：可生物降解聚酯的环境降解：3.碱处理对受控土壤中聚（ε-己内酯）和聚[（R）-3-羟基丁酸酯率）薄膜生物降解的影响

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摘要

The poly(ε-caprolactone) (PCL) and poly[(R)-3-hydroxybutyrate] (R-PHB) films with a hydrophilic surface were prepared by the alkali treatment of their as-cast films in NaOH solutions of different concentrations. The alkali-treated PCL and R-PHB films, as well as the as-cast PCL and R-PHB films, were biodegraded in soil controlled at 25℃ and the effects of alkali treatment or surface hydrophilicities on their biodegradation were investigated by the use of gravimetry, gel permeation chromatography (GPC), scanning electron microscopy (SEM), and polarization optical microscopy. It became evident that the alkali treatment enhanced the hydrophilicities and biodegradabilities of the PCL and R-PHB films in soil. The biodegradabilities of the as-cast aliphatic polyester films in controlled soil decreased in the following order: PCL > R-PHB > PLLA, in agreement with that in controlled static seawater.
机译：通过在不同浓度的NaOH溶液中对铸态薄膜进行碱处理，制备了具有亲水性表面的聚（ε-己内酯）（PCL）和聚[（R）-3-羟基丁酸酯]（R-PHB）薄膜。将碱处理的PCL和R-PHB膜以及铸态的PCL和R-PHB膜在温度控制在25℃的土壤中进行生物降解，并通过使用考察了碱处理或表面亲水性对其生物降解的影响。重量分析，凝胶渗透色谱法（GPC），扫描电子显微镜（SEM）和偏振光学显微镜。显然，碱处理增强了土壤中PCL和R-PHB膜的亲水性和生物降解性。受控土壤中铸态脂族聚酯薄膜的生物降解性按以下顺序降低：PCL> R-PHB> PLLA，与受控静态海水中的一致。

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