A fast and reliable detection of indigo in historic and prehistoric textile samples

We present a method requiring no sample preparation for the direct identification of indigoid colorants in tiny amounts in ancient historic fabrics using ASAP®‐MS. Exact determinations were completed in less than 1 min. Copyright © 2015 John Wiley & Sons, Ltd.     

Enhanced output voltage of nano energy harvester with diverse textiles

Abstract

We demonstrate the electrical properties of nano energy harvesters (NEHs) with various textiles for smart textiles that can be applied to the next generation wearable electronics. Output voltages and currents of NEHs with various fabrics, such as a cotton, rayon and wool that have different triboelectricity were measured. Cotton, rayon and wool shows the maximum output voltages of 1.250, 3.313 and 4.063 V, respectively. In addition, output currents of those textiles were 0.75, 4.4, 1.063 μA, respectively. Wool, in particular, which has the highest triboelectricity of 350 V exhibits the highest output voltage.     

New advancements in SERS dye detection using interfaced SEM and Raman spectromicroscopy (μRS)

In the past decade Surface Enhanced Raman Scattering (SERS) has emerged as a powerful technique for the analysis of artistic, historical and archaeological material culture. However, the identification of organic compounds in complex samples using SERS can be challenging owing to the complexity in optimizing the adsorption of target analytes onto the plasmonic substrate and the difficulty to identify proper areas on the sample for robust SERS analysis using optical systems. Scanning electron microscopy (SEM) interfaced with Raman spectromicroscopy (μRS) provides an ideal hyphenated system to overcome the last challenge by: (1) evaluating the nanoparticles coverage/distribution on the sample and (2) locating suitable areas for successful and reproducible SERS analysis. In this paper we demonstrate the potential of a system interfacing SEM and μRS for single fiber, extractionless analysis in the characterization of dyes from reference collections and archaeological textiles. Copyright © 2015 John Wiley & Sons, Ltd.     

气相色谱-质谱法测定纺织品中喹啉与异喹啉

建立了纺织品中喹啉和异喹啉的气相色谱-质谱检测方法。采用乙酸乙酯为溶剂,超声提取,经蒸发浓缩和定容后,以GC-MS测定。结果表明,喹啉和异喹啉在0.05～10.0 mg/L范围内线性良好(r0.999 0),回收率为82.0%～99.8%,相对标准偏差(n=6)为0.9%～3.8%;方法的定量下限为0.05 mg/kg。该方法灵敏度高、简便、高效、准确,可以满足纺织品中喹啉和异喹啉的检测需求。     

加速溶剂萃取-固相萃取-硅胶吸附色谱-电喷雾质谱法测定纺织品中的烷基酚聚氧乙烯醚

建立了测定纺织品中壬基酚聚氧乙烯醚和辛基酚聚氧乙烯醚的硅胶吸附色谱-电喷雾质谱分析方法.不同类型的纺织品样品采用加速溶剂萃取法,以无水乙醇为提取溶剂,在10.3 MPa和100 ℃下静态循环提取2次,提取液经Sep-Pak Carbon/NH2石墨化碳黑/氨基复合型固相萃取柱净化,以Waters Spherisorb S3W(150 mm×2.0 mm, 3 μm)色谱柱为分离柱,乙腈-水体系为流动相梯度洗脱,在电喷雾质谱正离子模式下进行定性及定量分析.壬基酚聚氧乙烯醚的方法检出限为10～40 μg/kg,在1～20 mg/kg的3个添加水平范围内的平均回收率为81.4%～95.9%,相对标准偏差均小于12.5%.辛基酚聚氧乙烯醚的方法检出限为10～30 μg/kg,在1～20 mg/kg的3个添加水平范围内的平均回收率为80.2%～96.8%, 相对标准偏差均小于13.0%.本方法准确、简便、快速,可用于纺织品的实际检验工作.     

纺织品与食品包装材料中烷基酚及双酚A迁移量的液相色谱-串联质谱分析

建立了纺织品与食品包装材料中烷基酚及双酚A迁移量的液相色谱-串联质谱分析方法.纺织品和食品包装材料浸泡液经Supelclean Envi-Carb石墨化碳黑固相萃取柱净化,以Waters XBridge C_(18)(150 mm×2.1 mm,3.5 μm)色谱柱分离后,进行LC-MS/MS多反应监测模式下的定性及定量分析.烷基酚和双酚A在纺织品模拟汗液、食品模拟物介质中特定迁移量的定量下限分别为2、4 μg/kg.在低、中、高3个添加水平下,测得纺织品样品的回收率为83%～91%,相对标准偏差为4.1%～9.0%;食品包装材料样品的回收率为82%～94%,相对标准偏差为3.9%～8.7%.     

新疆纺织品出口中的问题与对策

在对新疆纺织行业出口状况调研的基础上，分析了纺织品外贸的现状及存在的问题，并提出了解决问题的算法和意见，新疆是一个具有纺织资源、劳动力资源优势的地区，抓住“入世”机遇，对发展新疆纺织业具有重要的现实和战略意义。     

SERS detection of red organic dyes in Ag‐agar gel

Micro‐Raman spectroscopy has been widely employed in the last few years for the study of artworks, allowing for the characterization of a high class of pictorial materials. However, the detection of organic dyes by conventional Raman spectroscopy is quite difficult, due to the high fluorescence provided by these compounds. Recently, remarkable improvements have been achieved by the introduction of the surface enhanced Raman spectroscopy (SERS) technique for the analysis of organic dyes. In the present work, a new method is presented, based on the use of a SERS probe made of agar‐agar coupled with silver nanoparticles, for a non‐destructive and minimally invasive micro‐extraction of dyes from textiles. Ag‐agar gel has been tested first on textile mock‐ups dyed with alizarin, purpurin and carminic acid. SERS measurements have been performed adopting laser light excitations at 514.5 and 785 nm of a micro‐Raman setup. Highly structured SERS band intensities have been obtained. After having verified the safety of the method by colorimetric, X‐ray fluorescence and attenuated total reflectance Fourier transform infrared techniques, a real case, a pre‐Columbian piece of textile, have been investigated by Ag‐agar gel. This cutting‐edge method offers new possibilities for a sensitive and non‐destructive analysis of fluorescent materials. Copyright © 2012 John Wiley & Sons, Ltd.     

Nanofibers for Biomedical and Healthcare Applications

Unique features of nanofibers provide enormous potential in the field of biomedical and healthcare applications. Many studies have proven the extreme potential of nanofibers in front of current challenges in the medical and healthcare field. This review highlights the nanofiber technologies, unique properties, fabrication techniques (i.e., physical, chemical, and biological methods), and emerging applications in biomedical and healthcare fields. It summarizes the recent researches on nanofibers for drug delivery systems and controlled drug release, tissue‐engineered scaffolds, dressings for wound healing, biosensors, biomedical devices, medical implants, skin care, as well as air, water, and blood purification systems. Attention is given to different types of fibers (e.g., mesoporous, hollow, core‐shell nanofibers) fabricated from various materials and their potential biomedical applications.