芦荟纳米银的制备及其对真丝织物的抗菌整理

利用芦荟液在酸性环境和碱性环境下制备纳米银,酸性环境下制得的银粒子平均粒径最小在10 am以内.采用芦荟纳米银溶液对桑蚕丝织物进行了功能性整理,并研究了织物的抗菌性能和耐洗性能.研究结果表明:整理后的桑蚕丝织物抑菌率可达99.9%,织物上银含量为107.35 mg/kg时,抑菌率也达到了99.8%,耐洗性能良好.     

麦芽糖纳米银的制备及其对棉织物的改性研究

制备了麦芽糖纳米银溶液,利用激光粒度仪(HPPS)和透射电镜(TEM)考察了麦芽糖纳米银的尺寸及分布。用制备的麦芽糖纳米银溶液对棉织物进行整理,研究了织物的白度、抗菌性能和耐洗性能。结果表明,生成的麦芽糖纳米银的平均粒径在20nm左右,且分散性和均匀性好;抗菌实验表明整理后的棉织物具有很好的抗菌效果。经50次洗涤后,抑菌率在98%以上,说明织物具有优异的抗菌耐洗性。     

纳米银的制备及其对涤纶织物抗菌整理

为了实现涤纶织物的抗菌功能化改性目标,本文以自制的端氨基超支化聚合物（HBP-NH2）为还原剂制备纳米银,利用制得的纳米银溶液对涤纶织物进行抗菌整理,采用扫描电镜观察抗菌织物的纤维表面形态;测定了整理织物的抗菌效率、白度及耐洗性。试验结果表明,制得的纳米银平均粒径在20nm以内,稳定性能良好。当织物上银含量为125.412mg/kg时,对金黄色葡萄球菌和大肠杆菌的抑菌率分别达99.42%和99.27%;洗涤50次后,对金黄色葡萄球菌和大肠杆菌的抑菌率仍保持在98.32%以上,整理效果的耐洗性较好。     

葡聚糖纳米银的制备及其对丝绸织物的抗菌整理

以葡聚糖作为还原剂和模板,通过和硝酸银溶液反应制得稳定的纳米银溶胶抗菌剂。利用紫外-可见分光光度计(UV-Vis)、透射电镜(TEM)和X射线粉末衍射仪(XRD)表征了所制备的纳米银;利用纳米银溶液对桑蚕丝织物进行了载银抗菌处理,并测定了处理后织物的抗菌性能、白度及耐洗性;探讨了蚕丝纤维对纳米银颗粒的吸附机理。采用扫描电镜(SEM)观察载银整理后纤维表面纳米银颗粒的分布和形貌。试验结果表明,当硝酸银用量为0.5 mL时,制得溶胶中纳米银的粒径大小在20~30 nm,放置两个星期后,纳米银溶液仍然保持透明澄清,无沉淀。利用制备的纳米银溶液采取二浸二轧法对丝织物进行整理,整理后织物对金黄色葡萄球菌和大肠杆菌的抑菌率分别为98.32%和98.53%,经过30次洗涤后,对金黄色葡萄球菌和大肠杆菌的抑菌率仍能达到95%以上,具有良好的耐洗性能。     

仙人掌还原纳米银溶液的制备及其抑菌效果研究

本实验利用仙人掌干粉的水浸提取液在加热条件下制备出了仙人掌纳米银溶液,并采用激光粒度仪和透射电镜对纳米银的粒径进行了表征。将此纳米银胶体溶液对纯棉织物整理后测试其抑菌性能。抑菌实验结果表明,整理后的棉织物对大肠杆菌和金黄色葡萄球菌有良好的抑制效果,且抑菌率达到了99%以上,洗涤30次后,织物的抑菌率仍保持在99%以上。     

芦荟纳米银在真丝织物上的应用研究

为赋予真丝制品新的功能,拓展其应用领域,采用自制的芦荟纳米银溶液整理真丝织物,测试其抗菌和抗紫外性能.研究表明,采用植物芦荟可成功制备纳米银,整理的真丝织物对金黄色葡萄球菌和大肠杆菌的抑菌率可达99.71%和99.54%,且耐洗性良好.真丝织物的UPF值由处理前的6.52提高到处理后的36.62,且洗涤50次后UPF值仍可达24以上.芦荟纳米银整理真丝织物具有良好的抗菌性能和紫外线屏蔽效果.     

桑蚕丝织物HSDA-HTC抗菌整理性能研究

用实验室自制的聚合季铵盐(HSDA-HTC)对桑蚕丝织物进行抗菌整理,测试并分析了整理织物的抗菌性能、抗菌耐洗性及力学和吸湿性能.结果表明,经10 g/L的HSDA-HTC水溶液整理后的桑蚕丝织物对金黄色葡萄球菌和大肠杆菌的抑菌率分别为99.62%和99.44%,并具有优良的抗菌耐洗性,洗涤50次后其抑菌率仍超过99....     

真丝绸经仙人掌纳米银处理后的服用性能研究

利用纯天然仙人掌提取液还原制备了纳米银溶液,采用仙人掌纳米银溶液对桑蚕丝织物进行了功能性整理,研究了整理后桑蚕丝织物的物理性能及服用性能。研究结果表明：织物力学性能基本不变,保湿性能增加,吸水性能下降,拉伸性能基本保持不变,光滑度和匀整性下降,表面粗糙度增加,柔软性减弱,蓬松性减小,丰满感减弱,折皱回复能力有所提高。     

仙人掌纳米银处理真丝织物的抗菌性能研究

利用纯天然仙人掌液还原制备了纳米银溶液,采用仙人掌纳米银溶液对真丝织物进行了功能性整理,并研究了织物的抗菌性能,讨论了仙人掌纳米银溶液在不同质量浓度、不同温度、不同时间条件下对真丝织物服用件能及抗菌性能的影响,得到了最佳的整理工艺.     

DoraFresh纳米银抗菌整理

采用纳米银DoraFresh对棉、丝、毛等织物进行浸轧法抗菌整理，研究轧液率、加酸条件及整理液曝光对织物抗菌效果的影响，测试了整理织物的银含量、透气透湿性能和耐洗性。试验结果表明，织物的杀菌率与纳米银含量关系较大，织物的透气性和透湿性能受纳米银抗菌整理影响较小，整理织物对金黄色葡萄球菌、大肠杆菌及肺炎球菌抑制作用显著，抑菌率均在99％以上，经25次洗涤后，抑菌率仍达99％，耐洗性能优异。     

纳米银的可控制备及对棉织物的抗菌整理

利用改性聚酰胺超支化聚合物（PNP）在水溶液中制备纳米银,探讨了其还原、控制制备纳米银的机理,研究了所制备的纳米银水溶液的抗菌性能,并利用PNP在棉织物中原位控制生成纳米银,以实现对棉织物的抗菌整理。结果表明：PNP中的氨基能够主动诱捕、还原银离子,并通过PNP的分子网络结构对纳米银的生成起控制作用。通过调节银离子的量,制备了平均粒径分别为13.23、4.34、2.66 nm的纳米银水溶液,所制备的纳米银水溶液最小抑菌浓度为2 mg/L。利用PNP原位控制生成纳米银整理的棉织物具有优异的抗菌性能,其对金黄色葡萄球菌和大肠杆菌的抑菌率均在99 %以上,并具有优异的耐洗牢度。     

改性活性棉织物的纳米银原位组装抗菌整理

为实现纳米银在棉织物上的定向原位组装,以及纳米银抗菌纺织品的绿色、简便、高效、可循环的加工工艺,通过对棉织物进行氧化处理并接枝"核-壳"结构的改性聚酰胺超支化聚合物,制备了具有主动捕捉银离子、还原银离子、控制纳米银粒径、固着纳米银功能的活性棉织物。利用改性活性棉织物进行纳米银原位组装,对整理后的棉织物进行了表征,测试了其抗菌性能及耐洗性。结果表明:通过氧化、接枝处理能够将聚合物接枝到棉织物上,并且棉织物的活性改性处理对织物的力学性能影响不大。改性后的活性棉织物能够进行连续加工整理,整理过程实现零排放。整理后的棉织物纤维表面分布着大量5~25 nm的纳米银颗粒,其对金黄色葡萄球菌和大肠杆菌的抑菌率均在99.9%以上,且具有优异的耐洗牢度。     

MHBP-OH纳米银的制备及其对棉织物的长效抗菌整理

为了有效控制制备纳米银,本文对端氨基超支化聚合物(HBP-NH2)进行了接枝改性,制备了"核-壳"结构的改性超支化聚合物(MHBP-OH)。利用其在水溶液中制备了纳米银,并将其接枝到棉织物中原位控制生成纳米银,以实现对棉织物的抗菌整理。对生成的纳米银进行了表征,并对原位生成纳米银整理的棉织物进行了测试。结果表明:水溶液中控制生成的纳米银平均粒径为3.82 nm,并具有优异的稳定性,棉织物中原位生成的纳米银粒径在10 nm左右,在棉纤维上分布均匀,当银含量为146.26 mg/kg时,整理后的棉织物对金黄色葡萄球菌和大肠杆菌的抑菌率分别达到99.76%和99.62%,30次洗涤后,银含量仍保持在126.61 mg/kg。     

Synthesis of Silver Nanoparticles and Exhaustion on Cotton Fabric Simultaneously Using Laser Ablation Method

ABSTRACT

In this experimental research, the silver nanoparticles were synthesized on cotton fabric using laser ablation method in the same bath. Also the effects of the size of silver nanoparticles (NPs) on the structural and antibacterial properties of silver NP-coated cotton fabric have been investigated experimentally. A pulsed laser beam was used for synthesis of Ag NPs on cotton fabric. Pulses of a Q-switched Nd:YAG laser of 1064 nm wavelengths at 7 ns pulse width and different fluencies was employed to irradiate the Ag target in deionized water in the presence of cotton fabric. Four samples were prepared using different laser fluencies. The amount, size, morphology, and structure of produced NPs were studied using their spectrum in the range of UV to IR, and scanning electron microscopy methods. Fabrics were polluted by gram-positive Staphylococcus aureus bacteria. The colony counting method was used to investigate the antibacterial activity of prepared cotton samples. Results show that laser ablation for synthesis of Ag nanoparticles on cotton fabric is an inexpensive fast method for producing antibacterial fabrics.     

涤纶织物纳米TiO2颗粒化学复合镀银

采用化学镀技术,实现了不同分散剂分散纳米TiO2颗粒涤纶织物表面化学复合镀银,借助SEM、XRD和TG对镀层表面形貌、结构和织物热性能进行研究,测试织物的电磁波屏蔽、导电、耐磨、透气和光催化性能.结果表明:用PVP&T80作分散剂时,纳米TiO2的引入对镀层结构没有影响,但晶粒尺寸增大;随着纳米TiO2质量浓度的增加,...     

在位还原纳米银对桑蚕丝织物结构的影响

根据在位还原的原理,用汽蒸生成纳米银整理桑蚕丝织物,赋予真丝优异的抗菌性能.研究了不同浓度的AgNO3溶液与2 g/L的多氨基化合物(RSD)混合整理后,桑蚕丝织物的表面形态和结构变化,并用电子显微镜(SEM)、傅立叶红外光谱(FTIR)、X射线衍射(XRD)和热性能分析(TG)等手段进行了表征.结果表明:经纳米银整理后真丝织物表面吸附大量的银颗粒,且颗粒分布比较均匀、粒径均达到了纳米级;汽蒸纳米银整理工艺对真丝的结构影响较小.     

一步法原位生成纳米Ag-ZnO复合整理棉织物

为了实现对纺织品的多功能化整理,本文以棉织物为研究对象,利用端氨基超支化聚合物HBP-NH2通过微波法在织物中一步原位控制生成了纳米Ag-ZnO,研究了整理后棉织物的抗菌和抗紫外性能等。结果表明：HBP-NH2具有多重作用,能够同时与Ag+和Zn2+反应控制生成纳米Ag和纳米ZnO。利用不同浓度整理液整理棉织物,可以获得不同纳米Ag和纳米ZnO含量的棉织物。XRD、XPS和SEM分析表明纳米纳米Ag和纳米ZnO成功整理到棉织物中,粒径为30～120nm。纳米Ag-ZnO复合整理棉织物同时赋予了其优异的抗菌和抗紫外性能,整理后的棉织物对金黄色葡萄球菌和大肠杆菌的抑菌率均达到了99.99%。另外,复合整理还能改善纳米Ag整理对棉织物白度的影响。     

Antibacterial properties of cotton fabric treated with silver nanoparticles

In recent years nano‐sized particles have been focused on bacteriostasis. We investigated antimicrobial activities by applying two types of silver nanoparticles on cotton fabric. These are MesoSilver particles and silver chloride compounds (Silpure). Silver chloride, used in aqueous dispersion, is mixed with a monomer prior to the application on the fabric. MesoSilver is pure silver sub‐nanometer sized particles suspended in deionized water. Silpure solutions were padded and cured on cotton fabric. MesoSilver was padded onto the fabric followed by air drying. SEM images of Silpure‐ and MesoSilver‐treated fabric samples showed good particle dispersion on the fabric. EDX analysis was conducted to confirm the presence of silver particles on the fabric surface. Biological studies exhibited that no growth took place with zones of inhibition on both the treated samples; while the untreated samples did show bacterial growth. The Silpure sample exhibited excellent wash durability; however, the MesoSilver specimen did not.     

Preparation and characterization of a temperature-sensitive nonwoven poly (propylene) with antibacterial properties

In this study, a temperature-sensitive fabric with antibacterial properties was prepared by the formation of silver nanoparticles (AgNPs) on nonwoven poly (propylene) (PP) grafted with poly (N-iso-propylacrylamide) (PNIPAAm-PP). First, PNIPAAm was grafted onto corona-treated nonwoven PP. Afterwards, silver nanoparticles were synthesized on the temperature-sensitive hydrogel layer grafted to the surface of nonwoven PP by the reduction of silver ions (Ag⁺). Fourier transform infra-red spectroscopy confirmed the presence of PNIPAAm on the nonwoven PP. scanning electron microscopy-energy dispersive X-ray spectroscopy was used to investigate surface morphology and the presence of silver particles in the samples. Inductively coupled-plasma atomic emission spectroscopy revealed that the Ag content in Ag-functionalized PNIPAAm-PP was significantly higher than Ag-functionalized corona-treated PP with the same concentration of silver solution. Moreover, the results of the swelling rate experiment confirmed that PNIPAAm-PP maintained temperature-sensitive properties after functionalizing with Ag. The results showed that the formation of AgNPs with enhancement in antibacterial property was possible onto PNIPAAm-PP.     

A new route to synthesis silver nanoparticles on polyamide fabric using stannous chloride

Here, a one step in situ synthesis of silver nanoparticles on polyamide fabric was successfully performed using stannous chloride (SnCl₂) as a reducing and cetyltrimethylammonium bromide as a stabilizing agent. The treated fabrics were characterized with X-ray diffraction, field emission scanning electron microscope, and energy dispersion spectrum. The antibacterial activities of the fabrics against two diverse bacteria were examined and the fabrics color measured with reflectance spectrophotometer. The results revealed well loading and distribution of Ag NPs on the fabric surface with a crystal size of 16 nm with good antibacterial properties.