摘要
采用水溶液饱和法制备了肉桂醛/β-环糊精包合物,将其添加到聚乳酸(PLA)溶液中,利用静电纺丝技术制备PLA/肉桂醛复合纳米纤维膜。利用扫描电子显微镜(SEM)探讨了静电纺丝条件对PLA纳米纤维膜纤维直径及表面形貌的影响,通过傅里叶变换红外光谱(FTIR)对PLA/肉桂醛复合纳米纤维膜做了特征官能团分析,并对其热力学性能、力学性能及抗菌性能进行了表征。结果表明,制备的PLA/肉桂醛复合纳米纤维膜纤维形态良好,平均直径为175nm,FT-IR研究显示肉桂醛与PLA之间属于物理混合。该复合纳米纤维膜热分解温度265.52℃,拉伸强度为2.45MPa,对大肠杆菌、金黄色葡萄球菌和枯草芽孢杆菌都具有抑菌性,其中对金黄色葡萄球菌的抑菌性最强。
A cinnamic aldehyde/β-cyclodextrin complex was prepared by saturated aqueous solution method, then the complex was added to a PLA aqueous solution. The obtained solution was electrospun to a PLA/cinnamic aldehyde composite membrane. The effects of weight ratio of acetone to N, N-Dimethyl formamide （DMF）, PLA concentration, applied voltage, distance of needle to collector on the diameter of the nanofiber and morphology of membrane were investigated by scanning electron microscope （SEM）. The functional groups of the composite membrane were analyzed via fourier transform infrared spectrum （FT-IR）. The thermodynamic, mechanical, and antibacterial properties of the composite membrane were studied. The result showed that the average diameter of nanofiber in the composite membrane was 175 nm, thermal decomposition temperature was 265.52 ℃, the tensile strength was 2.45 MPa. FT-IR showed that the interaction between cinnamic aldehyde and PLA was physical in nature. The composite membrane possessed an antibacterial ability to Escherichia coli, Staphylococcus aureus and Bacillus subtilis.
出处
《中国塑料》
CAS
CSCD
北大核心
2014年第2期79-85,共7页
China Plastics
关键词
聚乳酸
肉桂醛
静电纺丝
复合纳米纤维膜
性能
poly（lactic acid）
cinnamic aldehyde
electrospinning
composite nanofiber membrane
performance
