Advanced Materials Research Vol. 441

Abstract: In order to choose one elixir from three anti-scaling inhibitors A, B and C that most suits for the circulating cooling water in thermal power plants under certain water condition, we used the dynamic simulation test method in this paper. Under high concentration rate (4.0), we comprehensively analyzed the three elixirs from the factors of their anti-scaling, corrosion and economical performances. According to the results, it was confirmed that elixir B displayed the relevant good properties for the water condition of the power plant. Meantime, the elixir components of the three elixirs were analyzed, and the results showed that all the indexes of them were in conformity with the national standards.

Abstract: The textile industry is under continuous pressure to develop and implement eco-friendly processes that offer high performance, acceptable costs and minimal environmental impact. Water is the processing medium to colour textiles and its use incurs a significant cost in terms of acquisition, purification, heating, rinsing, drying and disposal. In this study we examine the problems and potential solutions associated with water-based colouration, the application of pigment dyeing systems and the effect of fluorocarbon finishes and plasma processing on improving their surface and bulk properties.

Abstract: Considering a life cycle of consumer apparel, the largest energy consumption is not in fiber production, not in fabric manufacturing and even not in textile wet processing such as dyeing/finishing. It is in home laundry. Making home laundry more sustainable has become a common goal for laundry industry, appliance industry, government agency and consumers. Four mega trends in home laundry resulted from energy saving and sustainability efforts are: a) lower washing temperature, b) less water usage, c) less petroleum chemicals and d) more mechanical actions. These trends are fundamentally changing the landscape of consumer apparel performance in home laundry such as wrinkle formation, color fastness, dye transfer stain removal, soil re-deposition, whiteness maintenance and many more. These trends not only provide textile chemists with challenges, but also opportunities for textile innovations.

Abstract: Biological systems have their unique color generation mechanisms based on the selective reflection of light using colorants, scattering, interference and diffraction principles. Plants and animals can use either biochromes or schemochromes effectively thus presenting to us a beautiful colored world. Biochromes like chlorophylls and carotenoids are colorants synthesized by biological systems via a biochemical process and can reflect components of white light selectively, whereas schemochromes rely on the colorless structural characteristics of a biological component to generate a specific range of the visible light. Examples of both biochromes and schemochromes are presented and the current research progress discussed in this review.

Abstract: As an effort to develop environmentally friendly light-induced functional treatments for fabrics, certain acid dyes were incorporated onto different fabrics. The treated fabrics demonstrated powerful and durable antimicrobial and oxidative detoxifying functions after light exposure. In this presentation, we will report the latest progresses in using certain anthraquinone compounds in treatments of wool, nylon, silk and cotton fabrics. The dyed fabrics could demonstrate antimicrobial functions upon exposed to UVA (365 nm) and fluorescent light. However, it was more interesting to observe that the surfaces of the dyed wool fibers became polished with scales removed after being exposed to UV or day light for certain time. The chemical structures and thermal properties of the dyed fabrics were investigated by using different instrumentation such as SEM, FTIR, and other instruments, and the results verified the proposed oxidation reactions of the fibers. This research proves that dyeing fabrics with photo-active dyes could be a new green functional treatment on textiles.

Abstract: Nowadays, low carbon is an important trend of textile industry. Green textile has become a favorite of market, a sustainable textiles benefit for human safety, energy saving and emission reduction. With cases and data, BASF will introduce its contribution to safe and ecological textile manufacturing as a chemical supplier focusing on 3 key areas: consumer safety, resource saving and climate protection. BASF is continually providing ecological solutions to textile industry, commit to the sustainable development of the textile industry. BASF aims to expand its cooperation and communication with industry partners and contribute to better textiles and a better future.

Abstract: We report a reconstitution method which could provide consistent shade depth and add-on in wet-on-wet pad/batch dyeing and finishing. Textile wet processing involves many steps of wetting and drying. Eliminating some of them by the wet-on-wet process could save energy. For a continuous process, due to the fast fabric movement, a wet fabric also could enhance chemical penetration for the improvement of properties and savings on auxiliary chemicals. One common problem associated with wet-on-wet process is that after padding several hundred yards of yarns/fabrics, chemical add-on is considerably decreased, resulting in the decreased shade depth or performance of the finished goods. This phenomenon is the result of water interchange in the chemical pad. Once the water interchange rate is obtained, quality of wet-on-wet finished materials could be controlled.

Abstract: Ratiometric fluorescent sensors which based on ICT mechanism permit signal rationing to detect target molecules by measuring the ratio of fluorescence intensities at two different wavelengths, which are autoemitted by sensors upon binding objects. The autoreferential function of relative changes of two fluorescence intensities may avoid the influences of many nontarget factors in the changes of monofluorescence intensity. Therefore, the design of ratiometric fluorescent sensors is of great current interest. Generally, Cd2+ and Zn2+ havevery similar chemical properties, so the discrimination of them is very difficult.In sensor 1, we chose boradiazaindacene (BODIPY) as the fluorophore because it absorbs and emits in the visible region with high quantum yield, large extinction coefficient and good photo-stability,and N, N-bis(pyridin-2-ylmethyl)benzenamine as Cd2+ receptor. A vinyl group between the receptor and BODIPY fluorophore can induce red-shifts in absorption and fluorescence spectra. When Cd2+ is added into the aqueous solution of 1, owing to the reduction of the electron-donating character of the receptor, the photophysical properties of BODIPY will consequently be changed. In fact, 1 can distinguish Cd2+ from Zn2+ and especially can be used in both general fluorescence microscopy and ratiometric fluorescence microscopy.