Antibacterial Activity of Photoactive Silk Fibroin/Cellulose Acetate Blend Nanofibrous Membranes against <i>Escherichia coli</i>

Yi, Shixiong; Wu, Yuehan; Zhang, Yuansong; Zou, Yushan; Dai, Fangyin; Si, Yang

doi:10.1021/acssuschemeng.0c04276

Cited by 25 publications

(21 citation statements)

References 44 publications

(62 reference statements)

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“…Silk is not considered a polymer with antibacterial activity [ 89 , 103 ]. On the other side, there have been published studies that have shown that the antibacterial activity of polymers in different forms is influenced by many factors related to its preparation, processing [ 104 ], possibly mixing with other polymers [ 50 , 105 ] or active molecules, drugs, and biocides [ 106 , 107 , 108 ].…”

Section: Resultsmentioning

confidence: 99%

Electrospun Poly(ethylene Terephthalate)/Silk Fibroin Composite for Filtration Application

et al. 2021

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In this study, fibrous membranes from recycled-poly(ethylene terephthalate)/silk fibroin (r-PSF) were prepared by electrospinning for filtration applications. The effect of silk fibroin on morphology, fibers diameters, pores size, wettability, chemical structure, thermo-mechanical properties, filtration efficiency, filtration performance, and comfort properties such as air and water vapor permeability was investigated. The filtration efficiency (FE) and quality factor (Qf), which represents filtration performance, were calculated from penetration through the membranes using aerosol particles ranging from 120 nm to 2.46 μm. The fiber diameter influenced both FE and Qf. However, the basis weight of the membranes has an effect, especially on the FE. The prepared membranes were classified according to EN149, and the most effective was assigned to the class FFP1 and according to EN1822 to the class H13. The impact of silk fibroin on the air permeability was assessed. Furthermore, the antibacterial activity against bacteria S. aureus and E. coli and biocompatibility were evaluated. It is discussed that antibacterial activity depends not only on the type of used materials but also on fibrous membranes’ surface wettability. In vitro biocompatibility of the selected samples was studied, and it was proven to be of the non-cytotoxic effect of the keratinocytes (HaCaT) after 48 h of incubation.

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Section: Resultsmentioning

confidence: 99%

Electrospun Poly(ethylene Terephthalate)/Silk Fibroin Composite for Filtration Application

et al. 2021

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“…Cellulose acetate (CA) is a biopolymer that can be modified and used for some applications that include anti‐biological agents [47] . The modification of CA for relevant applications is well‐studied, and also among the fastest‐growing research areas in the field of material sciences [20,48,49] . Here, we report the antifouling performance of modified CA films, in which a new benzoxazine compound (HBC) was synthesized and incorporated into the matrix of CA to give the said films (Figure 1c).…”

Section: Resultsmentioning

confidence: 92%

Antifouling Performance of Cellulose Acetate Films Based on a New Benzoxazine Derivative

et al. 2021

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Fouling is an industrial problem that affects the maritime sector, and it has caused damages to equipment and vessels used in this industry. This research focuses on the synthesis of a novel arylidene‐based benzoxazine compound (HBC) and its use as a modifier for cellulose acetate (CA) matrix to form film samples and the investigation of their antifouling efficacy. The HBC compound was synthesized from a bis(arylidene)cyclopentanone diol compound and characterized appropriately using Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectroscopic methods, respectively. Different weight ratios: 0, 10, 20, 30, and 40 %w/w of HBC to CA were mixed to give the films; CA‐0, CA‐10, CA‐20, CA‐30, and CA‐40, respectively. The fabricated films were characterized by FTIR analysis, and their morphology was examined by scanning electron microscopy (SEM). The thermal stability of the films was also studied using thermal gravimetric analysis (TGA), while the antifouling performance of the films was tested against strains of natural, biofilm‐forming bacteria isolated from artificial nets submerged in the Red Sea. Biofilm inhibitory test and bactericidal assay were conducted on the fabricated film materials using well established standard methods. The results of this investigation indicate that the HBC modified CA films contain relevant bioactive molecules that can inhibit primary colonizers in biofouling formation and will make a good antifouling coating film candidate. The CA‐40 revealed an inhibitory activity of 37 % and a bacterial killing efficacy of 87 %.

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“…[ 124 ] Similarly, grafting of photoactive anthraquinone‐2‐carboxylic acid onto the silk fibroin/cellulose acetate blend nanofibrous membranes showed 99.9999% contact‐killing of E. coli under UVA irradiation. [ 125 ]…”

Section: Modification Of Masksmentioning

confidence: 99%

“…[124] Similarly, grafting of photoactive anthraquinone-2-carboxylic acid onto the silk fibroin/cellulose acetate blend nanofibrous membranes showed 99.9999% contactkilling of E. coli under UVA irradiation. [125] There are several reports about the incorporation of ROS generators in the face masks to capture and inactivate the bacteria and viruses during breathing, thereby preventing lung infection. Monge et al also incorporated the photoactive conjugated polymers and oligomers into the masks and other PPEs as strong materials for the inactivation of SARS-CoV-2.…”

Section: Photosensitizersmentioning

confidence: 99%

Functionalized Masks: Powerful Materials against COVID‐19 and Future Pandemics

Seidi

Deng

Zhong

et al. 2021

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The outbreak of COVID‐19 revealed the vulnerability of commercially available face masks. Without having antibacterial/antiviral activities, the current masks act only as filtering materials of the aerosols containing microorganisms. Meanwhile, in surgical masks, the viral and bacterial filtration highly depends on the electrostatic charges of masks. These electrostatic charges disappear after 8 h, which leads to a significant decline in filtration efficiency. Therefore, to enhance the masks’ protection performance, fabrication of innovative masks with more advanced functions is in urgent demand. This review summarizes the various functionalizing agents which can endow four important functions in the masks including i) boosting the antimicrobial and self‐disinfectant characteristics via incorporating metal nanoparticles or photosensitizers, ii) increasing the self‐cleaning by inserting superhydrophobic materials such as graphenes and alkyl silanes, iii) creating photo/electrothermal properties by forming graphene and metal thin films within the masks, and iv) incorporating triboelectric nanogenerators among the friction layers of masks to stabilize the electrostatic charges and facilitating the recharging of masks. The strategies for creating these properties toward the functionalized masks are discussed in detail. The effectiveness and limitation of each method in generating the desired properties are well‐explained along with addressing the prospects for the future development of masks.

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Antibacterial Activity of Photoactive Silk Fibroin/Cellulose Acetate Blend Nanofibrous Membranes against Escherichia coli

Cited by 25 publications

References 44 publications

Electrospun Poly(ethylene Terephthalate)/Silk Fibroin Composite for Filtration Application

Electrospun Poly(ethylene Terephthalate)/Silk Fibroin Composite for Filtration Application

Antifouling Performance of Cellulose Acetate Films Based on a New Benzoxazine Derivative

Functionalized Masks: Powerful Materials against COVID‐19 and Future Pandemics

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