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从天然植物黄芩(SBG)中提取有效成分(SBGE),并与可生物降解材料聚丁二酸丁二醇酯(PBS)复合。为提高两者相容性,合成了2种PBS改性产物:PBS—OH和PBS—COOH。探讨了SBGE/PBS复合材料的界面作用,研究了SBGE对不同PBS基体性能的影响。结果表明:—OH和—COOH的引入改善了基体与亲水性提取物的相容性,加强了相互间的氢键作用,增强了界面结合强度。SBGE的添加对PBS的晶型没有影响。1%SBGE/PBS、3%SBGE/PBS—OH和1%SBGE/PBS—COOH热性能最优,且均高于基体本身;7%SBGE/PBS、3%SBGE/PBS—OH和1%SBGE/PBS—COOH的力学性能最佳;抗菌性能的变化均证明了相互作用的存在。SBGE/PBS—OH和SBGE/PBS—COOH的综合性能优于SBGE/PBS。
The active ingredient (SBGE) was extracted from the natural plant Scutellaria baicalensis Georgi (SBG) and composited with biodegradable material polybutylene succinate (PBS). To improve their compatibility, two kinds of PBS-modified products were synthesized: PBS-OH and PBS-COOH. The interfacial effects of SBGE / PBS composites were investigated and the effects of SBGE on the properties of different PBS substrates were investigated. The results showed that the introduction of -OH and -COOH improved the compatibility of the matrix with the hydrophilic extract, enhanced the hydrogen bonding interaction and enhanced the interfacial bonding strength. The addition of SBGE had no effect on the crystalline form of PBS. The best thermal properties of SBE / PBS, 1% SBGE / PBS-OH, 1% SBGE / PBS- / PBS-COOH best mechanical properties; changes in antibacterial properties are proof of the existence of the interaction. The combined performance of SBGE / PBS-OH and SBGE / PBS-COOH was better than that of SBGE / PBS.