Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (06): 29-36.doi: 10.13475/j.fzxb.20210300808

• Fiber Materials • Previous Articles     Next Articles

Antibacterial fiber membrane with photodegradation function based on polyhydroxybutyrate/polycaprolactone

QU Yun, MA Wei, LIU Ying, REN Xuehong()   

  1. Key Laboratory of Eco-Textiles (Jiangnan University), Ministry of Education, Wuxi, Jiangsu 214122, China
  • Received:2021-03-01 Revised:2022-03-16 Online:2022-06-15 Published:2022-07-15
  • Contact: REN Xuehong E-mail:xuehongr@hotmail.com

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Abstract:

In order to prepare a novel fiber membrane with high antibacterial performance and photodegradation function, Ag-ZnO composite particles with different mass fractions were added to polycaprolactone(PCL) and polyhydroxybutyrate(PHB) composite fiber membrane by electrospinning technology. The prepared Ag-ZnO-PHB/PCL fibrous membranes were characterized by scanning electron microscope, X-ray diffraction, thermogravimetric analysis, and fourier transform infrared spectroscopy. Mechanical properties, photocatalytic performance and antibacterial property were also investigated. The experimental data shows that the antibacterial rates of fibrous membranes against E. coli O157:H7 and S. aureus within 60 min reach 84.12% and 97.99% respectively. The fibrous membrane has inhibitory effect on biofilm to a certain extent. The degradation of methylene blue solution was significant when the fiber membrane was irradiated under ultraviolet light for 12 min. The fibrous membrane also has excellent mechanical properties and good biocompatibility, which demonstrates a great potential for application in the field of antibacterial packaging materials and medical dressings.

Key words: Ag-ZnO particle, electrospinning, antibacterial property, photodegradation, mechanical property, polycaprolactone, composite fiber membrane

CLC Number: 

  • TB383.2

Fig.1

SEM image(a) and size distribution(b) of Ag-ZnO"

Fig.2

EDS mapping images of different elements in Ag-ZnO"

Fig.3

SEM images of Ag-ZnO-PHB/PCL membranes with different content of Ag-ZnO particle"

Fig.4

Breaking strength and elongation at break of PHB/PCL and Ag-ZnO-PHB/PCL membranes"

Fig.5

FT-IR spectra of ZnO, Ag-ZnO, PHB/PCL and Ag-ZnO-PHB/PCL membranes"

Fig.6

XRD spectra of ZnO, Ag-ZnO, PHB/PCL and Ag-ZnO-PHB/PCL membranes"

Fig.7

TG(a) and DTG(b) curves of PHB/PCL and Ag-ZnO-PHB/PCL membranes"

Tab.1

Antibacterial property of PHB/PCL, ZnO-PHB/PCL and Ag-ZnO-PHB/PCL"

样品 接触时
间/min		 抑菌率/%
对大肠杆菌 对金黄色葡萄球菌
PHB/PCL 60 75.66 45.44
ZnO-PHB/PCL 60 78.12 71.67
Ag-ZnO-PHB/PCL 10 58.72 89.95
30 62.95 97.51
60 84.12 97.99

Tab.2

Biofilm test for E. coli bacterial"

样品 接触时间/
min		 菌落数量/
(CFU·cm-2)
PHB-PCL 30 3.88×106
120 4.67×106
Ag-ZnO-PHB/PCL 30 5.60×105
120 4.01×104

Fig.8

SEM images of bacterial biofilm (E. coli)"

Fig.9

Photos of Methylene Blue solution degradation test"

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