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利用表面引发原子转移自由基聚合(SI-ATRP)在聚对苯二甲酸乙二醇酯(PET)薄膜表面接枝甲基丙烯酸六氟丁酯(HFBMA)和甲基丙烯酸甲酯(MMA)共聚物。通过红外光谱仪(ATR-FT-IR),X射线光电子能谱仪(XPS)以及扫描电镜(SEM),研究不同反应时间下接枝共聚物对PET薄膜表面组成、结构及性能的影响;利用接触角测试对比研究PET薄膜接枝改性前后的表面疏水性;采用平板菌落计数的方法研究薄膜改性前后的微生物粘附性。结果表明:随着反应时间延长,PET薄膜表面水接触角不断增大,当反应时间为12h时达99.5°,疏水性显著提高;PET薄膜表面对微生物的粘附量随着反应时间的延长而逐渐减少。
The graft copolymerization of hexafluorobutylmethacrylate (HFBMA) and methylmethacrylate (MMA) on the surface of polyethyleneterephthalate (PET) film by surface-initiated atom transfer radical polymerization (SI-ATRP) Things. The effects of graft copolymers on the surface composition, structure and properties of PET films at different reaction times were studied by infrared spectroscopy (ATR-FT-IR), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) The angle test was used to study the surface hydrophobicity of PET film before and after grafting modification. The bacterial adhesion of the film before and after modification was studied by the method of plate colony counting. The results showed that the contact angle of water on the surface of PET film increased with the increase of reaction time, reaching 99.5 ° when the reaction time was 12h, and the hydrophobicity of PET film increased significantly. The adhesion of PET film to microorganisms increased with the increase of reaction time gradually decreases.