Polyester/cotton(PET/C)blended fabric wastes are produced daily in huge amounts,which constitutes an economic loss and an environmental threat if it is not reused appropriately.Modern textile waste recycling technolog...Polyester/cotton(PET/C)blended fabric wastes are produced daily in huge amounts,which constitutes an economic loss and an environmental threat if it is not reused appropriately.Modern textile waste recycling technologies put much effort into developing fabric materials with unique properties,such as bioactivity or new optical goods based on modern technologies,especially nano-biotechnology.In this study,zinc oxide nanoparticles(ZnO-NPs)were biosynthesized using the aqueous extract of Dunaliella sp.and immobilized on PET/C waste fabrics after enzymatically activated with cellulases.The produced Dunaliella-ZnO-NPs(10–20 nm with a spherical shape)were characterized by High-resolution transmission electron microscopy(HRTEM),Fourier-transform infrared spectroscopy(FTIR),X-Ray diffraction analysis(XRD),and Scanning electron microscopy-energy dispersive X-ray analyzer(SEM-EDAX),and some functional groups,such as CH,CO,NH,and CN(due to the presence of carboxyl,proteins and hydroxyl groups),were detected,revealing the biosynthesis of ZnO-NPs.The analysis showed that the resulting ZnO-NPS had potent antimicrobial effects,Ultraviolet(UV)protection capabilities,and no cytotoxic effects on the normal human fibroblast cell line(BJ1).On the other hand,enzymatic treatments of PET/C fabric waste with cellulases enhanced the immobilization of biosynthetic nanoparticles on their surface.Modified PET/C fabrics loaded with Dunaliella-ZnO-NPs showed antibacterial and UV protection capabilities making them an eco-friendly and cost-effective candidate for numerous applications.These applications can include the manufacture of active packaging devices,wastewater treatment units,and many other environmental applications.展开更多
A new type of alkali-soluble polyester/cotton blended yarns was used to knit a compact knitted fabric on a circular weft knitting machine,treated with 5 g/L NaOH solution for 60 min at a temperature of 100℃,and the p...A new type of alkali-soluble polyester/cotton blended yarns was used to knit a compact knitted fabric on a circular weft knitting machine,treated with 5 g/L NaOH solution for 60 min at a temperature of 100℃,and the polyester was completely dissolved.The dissolved polyester could be polymerized again by a polycondensation reaction.After the cotton fibers were opened and combed,the length and mechanical properties of the cotton fibers were tested.The physical and mechanical properties of the separated cotton fibers were good.The chemical structure and crystallinity were analyzed by Fourier transform infrared(FTIR)spectroscopy and X-ray diffraction(XRD)analysis.It could be seen that the chemical structure of cotton fibers was almost unchanged after treatment,and the crystallinity decreased slightly.It provides some reference for the separation and recycling of waste polyester/cotton fabrics.展开更多
采用苯甲醇用于涤/棉分散/活性染料直接印花,探究了苯甲醇用量以及焙烘温度、焙烘时间、汽蒸时间等因素对涤/棉织物印花性能的影响,测试了印花织物的各项色牢度。结果表明,苯甲醇可用于涤/棉分散/活性染料同浆印花低温焙烘助剂,最佳工艺...采用苯甲醇用于涤/棉分散/活性染料直接印花,探究了苯甲醇用量以及焙烘温度、焙烘时间、汽蒸时间等因素对涤/棉织物印花性能的影响,测试了印花织物的各项色牢度。结果表明,苯甲醇可用于涤/棉分散/活性染料同浆印花低温焙烘助剂,最佳工艺为:苯甲醇50 m L/kg,焙烘温度170~180℃,焙烘时间2 min,100℃汽蒸7~10 min,涤/棉印花织物可获得较高的表观色深,具有良好的耐摩擦、耐皂洗色牢度。展开更多
基金supported by the program of the science,technology and innovation funding authority(STDF),Egypt under Grant No.43447.
文摘Polyester/cotton(PET/C)blended fabric wastes are produced daily in huge amounts,which constitutes an economic loss and an environmental threat if it is not reused appropriately.Modern textile waste recycling technologies put much effort into developing fabric materials with unique properties,such as bioactivity or new optical goods based on modern technologies,especially nano-biotechnology.In this study,zinc oxide nanoparticles(ZnO-NPs)were biosynthesized using the aqueous extract of Dunaliella sp.and immobilized on PET/C waste fabrics after enzymatically activated with cellulases.The produced Dunaliella-ZnO-NPs(10–20 nm with a spherical shape)were characterized by High-resolution transmission electron microscopy(HRTEM),Fourier-transform infrared spectroscopy(FTIR),X-Ray diffraction analysis(XRD),and Scanning electron microscopy-energy dispersive X-ray analyzer(SEM-EDAX),and some functional groups,such as CH,CO,NH,and CN(due to the presence of carboxyl,proteins and hydroxyl groups),were detected,revealing the biosynthesis of ZnO-NPs.The analysis showed that the resulting ZnO-NPS had potent antimicrobial effects,Ultraviolet(UV)protection capabilities,and no cytotoxic effects on the normal human fibroblast cell line(BJ1).On the other hand,enzymatic treatments of PET/C fabric waste with cellulases enhanced the immobilization of biosynthetic nanoparticles on their surface.Modified PET/C fabrics loaded with Dunaliella-ZnO-NPs showed antibacterial and UV protection capabilities making them an eco-friendly and cost-effective candidate for numerous applications.These applications can include the manufacture of active packaging devices,wastewater treatment units,and many other environmental applications.
文摘A new type of alkali-soluble polyester/cotton blended yarns was used to knit a compact knitted fabric on a circular weft knitting machine,treated with 5 g/L NaOH solution for 60 min at a temperature of 100℃,and the polyester was completely dissolved.The dissolved polyester could be polymerized again by a polycondensation reaction.After the cotton fibers were opened and combed,the length and mechanical properties of the cotton fibers were tested.The physical and mechanical properties of the separated cotton fibers were good.The chemical structure and crystallinity were analyzed by Fourier transform infrared(FTIR)spectroscopy and X-ray diffraction(XRD)analysis.It could be seen that the chemical structure of cotton fibers was almost unchanged after treatment,and the crystallinity decreased slightly.It provides some reference for the separation and recycling of waste polyester/cotton fabrics.
文摘采用苯甲醇用于涤/棉分散/活性染料直接印花,探究了苯甲醇用量以及焙烘温度、焙烘时间、汽蒸时间等因素对涤/棉织物印花性能的影响,测试了印花织物的各项色牢度。结果表明,苯甲醇可用于涤/棉分散/活性染料同浆印花低温焙烘助剂,最佳工艺为:苯甲醇50 m L/kg,焙烘温度170~180℃,焙烘时间2 min,100℃汽蒸7~10 min,涤/棉印花织物可获得较高的表观色深,具有良好的耐摩擦、耐皂洗色牢度。
