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Abstract：
Polyvinyl alcohol (PVA)-bacterial succinoglycan (SG) biodegradable films were developed through a solvent-casting method. Effects of the PVA/SG ratio on the thickness, transmittance, water holding capacity, and structural and mechanical properties were investigated by various analytical methods. All the prepared films were transparent and uniform, and XRD and FTIR analyses confirmed that PVA was successfully incorporated into SG. The films also showed excellent UV-blocking ability: up to close to 80% with increasing SG concentration. The formation of effective intermolecular interactions between these polymers was evidenced by their high tensile strength and moisture transport capacity. By measuring the biodegradation rate, it was confirmed that films with high SG content showed the fastest biodegradation rate over 5 days. These results confirm that PVA/SG films are eco-friendly, with both excellent biodegradability and effective UV-blocking ability, suggesting the possibility of industrial applications as a packaging material in various fields in the future.
摘要：
通过溶剂流延法开发了聚乙烯醇（PVA）-细菌琥珀聚糖（SG）可生物降解的薄膜。PVA/SG比对厚度的影响，透光率,持水能力，通过各种分析方法研究了结构和机械性能。所有制备的薄膜都是透明和均匀的，XRD和FTIR分析证实，PVA已成功掺入SG。膜还显示出优异的UV阻挡能力:随着SG浓度的增加高达接近80%。这些聚合物之间有效分子间相互作用的形成由它们的高拉伸强度和水分输送能力证明。通过测量生物降解速率，证实了具有高SG含量的膜在5天内显示出最快的生物降解速率。这些结果证实了PVA/SG薄膜是环保的，具有优异的生物降解性和有效的紫外线阻挡能力，这表明未来作为包装材料在各个领域的工业应用的可能性。
