从植物黄芩中提取有效染色成分,与可生物降解材料聚丁二酸丁二醇酯(PBS)复合制备环保型着色复合材料.通过XPS、FT-IR分析与分子模拟揭示了复合材料的界面作用.对材料亲疏水性、热稳定性、力学性能进行测试,研究了提取物的添加对复合材料的性能影响.通过模拟自然降解、大田降解研究了复合材料的降解情况,并探讨了降解机理.结果表明,黄芩提取物的添加使得复合材料的亲水性增强.复合材料XPS、红外光谱及分子模拟显示黄芩提取物中的—OH与PBS酯基作用形成C=O…H—O,从而使得材料的热稳定性、力学性能得以保持或改善.黄芩提取物作为小分子物质,易被微生物侵蚀,其产生的孔洞使得复合材料的降解速率增大.
Extracted dyeing ingredients from Scutellaria baicalensis georgi,and compounded with biodegradable materials poly (butylene succinate)(PBS),the scutellaria baicalensis georgi extracts/PBS composites were pre-pared.By XPS,FT-IR analysis and molecular simulation the interface interaction was revealed.The effects of adding the extracts on the hydrophilicity,thermal stability,and mechanical properties were studied.With simu-lating natural degradation and field degradation,the degradation mechanism of the composites was investigated. The results show that the Scutellaria baicalensis Georgi extracts made the hydrophilic of the composites rein-forced.The XPS,FT-IR spectra and molecular simulation demonstrated the extracts and PBS formed C=O…H—O,and made the thermal stability and mechanical properties of the composites maintained or improved.As small molecules,Scutellaria baicalensis georgi extracts could easy be attacked and formed holes inside of the composites,so that the composites degradation rate increases.
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