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In order to explore the application of photodynamic antimicrobial technology in the field of personal health protection, PCL/D-M/BSA membranes were synthesized from bovine serum albumin (BSA) modification on PCL/D-M membranes, which were prepared via electrospinning technology using polycaprolactone (PCL) as base material and 4′,5′-bis(2,6-dimethyl-4-pyranylidene malononitrile)-2′,7′-dichlorofluorescein (DCF-MPYM) as photosensitizer, and characterized by SEM. The effects of DCF-MPYM and BSA mass fraction on the hydrophilicity, mechanical properties and antimicrobial properties of nanofiber membranes were investigated by contact angle measurement, electronic fabric strength tester and Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) antimicrobial test. The optimized PCL/D-M/BSA membrane was finally compounded with activated carbon mask to obtain functional textile with good breathability and antibacterial performance. The results indicated that the PCL/15D-M membrane with a mass fraction of 0.034% DCF-MPYM displayed ideal fiber diameter, excellent mechanical properties and good hydrophilicity, showing an average fiber diameter of (120±56) nm, a maximum breaking strength of 252.35 cN, a maximum elongation at break of 46.74%, and a water contact angle of 123.13°. The PCL/D-M/BSA membrane prepared with a mass fraction of 0.166% BSA exhibited an average diameter of (96±26) nm, a maximum breaking strength of 382.39 cN, a maximum elongation at break of 84.18%, and a water contact angle of 62.07°. The bacterial inhibition rates of PCL/D-M/BSA membrane against E. coli and S. aureus reached 95.0%±2.0% and 99.0%±1.0%, respectively, while the prepared composite functional textile exhibited a gas permeability of 113.45 nm/s and an antibacterial rate of 95.0%±1.0%.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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