- 學位論文
聚苯胺塗佈多孔基材之水體抗菌研究
Antibacterial study of polyaniline coated porous ceramics for water treatment applications
摘要
聚苯胺結構的多樣性涵蓋物理、磁性、電性等多方面應用價值亦能有效抑制細菌、黴菌及真菌。本實驗利用十二烷基苯磺酸摻雜聚苯胺，主要探討應用於用水系統之抗菌效果，研究分成三大部份: (1)聚苯胺結構鑑定：製備完成之聚苯胺應用FTIR及XRD分析其結構，利用TGA檢測其熱安定性，並採用SEM觀察其微觀結構；(2)聚苯胺塗佈多孔陶瓷基材：利用中華民國國家標準CNS 619/R3013 檢測聚苯胺之吸水率、孔隙率、重量變化及體密度；(3)聚苯胺抗菌測試：分別針對聚苯胺粉體、聚苯胺樹酯與聚苯胺多孔陶瓷基材進行抗菌測試，以大腸桿菌及金黃色葡萄球菌為目標菌進行測試，期望能將此新型的抗菌材料，應用於水體之處理。 聚苯胺粉末抗菌能力，由抑菌圈的實驗結果可以發現其抗菌機制較偏向於接觸式抗菌。在水體之抗菌中，聚苯胺粉末 10 mg/mL 與大腸桿菌、金黃色葡萄球菌(濃度：106 CFU/mL)分別接觸4小時後，可以達到抗菌率99%以上之效果。聚苯胺混合樹酯在JIS Z2801日本非紡織品標準抗菌試驗中，抗菌活性值大腸桿菌及金黃色葡萄球菌分別為3.3及3.8，也就是抗菌率達到了99.99%以上。瓶杯試驗中：聚苯胺多孔陶瓷基材2.4 mg/mL與大腸桿菌及金黃色葡萄球菌 (106 CFU/mL) 分別接觸4小時後，其對大腸桿菌之抗菌率皆有91.7%以上，對金黃色葡萄球菌則在3小時後，其對金黃色葡萄球菌皆有95%以上。在連續式模場測試下：水力停留時間3小時，聚苯胺多孔陶瓷基材24 mg/ml，在4小時抗菌率達到了50.5%，直到24小時抗菌率依舊有64.7%，證明陶瓷多孔陶瓷基材在連續式模場具有潛力的抗菌能力。
並列摘要
Polyaniline is known to possess strong bactericidal properties against a broad range of microorganisms without releasing harmful by-product. The porous ceramichas the advantages of high flexibility to use, easy operation and low maintenance requirement, and high potential application in water supply systems... In this study, polyaniline porous ceramic substrate was developed for the deactivation of Escherichia coli and Staphylococcus aureus in water. The results showed that a significant inhibition zone was exhibited by polyaniline to comfirm the possible contact antibacterial mechanism. Polyaniline (10 mg/mL) in powder form reached an antibacterial efficiency of 99% against (106 CFU/mL) Escherichia coli and Staphylococcus aureus after 4 hours of contact time. Based on JIS Z2801 test on polyaniline mixed with epoxy resin, the antibacterial activity on Escherichia coli and Staphylococcus aureus were 3.3 and 3.8, respectively, which was referred to an antibacterial efficiency of 99.99%. Polyaniline porous ceramic substrates with a concentration of 100 mg/mL exhibited more than 80.3% antibacterial efficiency while contacting with 106 CFU/mL of Escherichia coli and Staphylococcus aureus for 4 hours. Polyaniline porous ceramic substrates were also investigated on a continuous field experiment with a hydraulic retention time of 3 h, and porous ceramic substrate of 24 mg/mL. The antibacterial efficiency reached 50.5% for 4 hours and increased to 64.7% for 24 hours which verified the significant and stable antibacterial activity of polyaniline porous ceramic substrate.