This paper describes a flexible and lightweight fabric supercapacitor electrode as a possible energy source in smart garments. We examined the electrochemical behavior of porous carbon materials impregnated into woven cotton and polyester fabrics using a traditional printmaking technique (screen printing). The porous structure of such fabrics makes them attractive for supercapacitor applications that need porous films for ion transfer between electrodes. We used cyclic voltammetry, galvanostatic cycling and electrochemical impedance spectroscopy to study the capacitive behaviour of carbon materials using nontoxic aqueous electrolytes including sodium sulfate and lithium sulfate. Electrodes coated with activated carbon (YP17) and tested at ∼0.25 A·g−1 achieved a high gravimetric and areal capacitance, an average of 85 F·g−1 on cotton lawn and polyester microfiber, both corresponding to ∼0.43 F·cm−2.

Carbon coated textiles for flexible energy storage

Environmentally benign non-wettable textile treatments: A review of recent state-of-the-art.

Monomers possessing two functionalities suitable for polymerization are often designed and utilized in syntheses directed to the formation of cross-linked macromolecules. In this review, we give an account of recent developments related to the use of such monomers in cyclopolymerization processes, in order to form linear, soluble macromolecules. These processes can be activated by means of radical, ionic, or transition-metal mediated chain-growth polymerization mechanisms, to achieve cyclic moieties of variable ring size which are embedded within the polymer backbone, driving and tuning peculiar physical properties of the resulting macromolecules. The two functionalities are covalently linked by a “tether”, which can be appropriately designed in order to “imprint” elements of chemical information into the polymer backbone during the synthesis and, in some cases, be removed by postpolymerization reactions. The two functionalities can possess identical or even very different reactivities toward the polymeri...

Cyclopolymerizations: Synthetic Tools for the Precision Synthesis of Macromolecular Architectures

Recent application developments of water-soluble synthetic polymers

A highly selective isophorone‐boronate ester based chemosensor, (1), having a dicyanovinyl moiety as a convenient colorimetric probe, has been designed. Different types of anionic analyte such as CH3COO−, ClO4−, Cl−, F−, PF6−, Br− and HSO4− were tested and among them only highly nucleophilic F− anion displayed significant response towards the sensor. Addition of the fluoride anion across the boron atom disrupts the π‐conjugation thereby shifts the absorption wavelength towards the redshift region due to the decrease in the HOMO‐LUMO energy gap and a colour change from yellow to blue is observed under visible light condition. The detection limit of this probe was calculated to be 3.25 × 108 M for fluoride anion. The binding constants and the detection limits of the sensor were calculated using absorption titration studies. The silica gel TLC strips dip‐coated by the chemosensor (1) revealed a colour change from yellow to brick red to naked eye.

Isophorone‐boronate ester: A simple chemosensor for optical detection of fluoride anion

Photochromic behaviour of poly[N,N-[(3-dimethylamino)propyl]methacrylamide] having spiroxazine pendant group

The cotton fabrics were pretreated by sodium 2-(2,3-dibromopropionylamino)-5-(4,6-dichloro-1,3,5-triazinylamino)-benzenesulfonate (DBDCBS) at alkaline condition of room temperature and then dyed with four disperse dyes having amino groups (C.I. Disperse Yellow 9, C.I. Disperse Red 11, C.I. Disperse Blue 56 and C.I. Disperse Violet 1) at acidic condition of high temperature. A novel hetero-bifunctional bridge compound,DBDCBS, has two reactive groups such as dichloro-s-triazinyl group andα, β-dibromopropionylamido group. The first has reactivity towards hydroxy group of cellulosic fiber and the second shows reactivity towards amino groups of disperse dye containing amino groups. The results indicate that it is possible to dye polyester/cotton blend at one-bath dyeing using one kind of disperse dye containing amino groups. Therefore, two kinds of dyeing methods such as two-bath process one-bath dyeing and one-bath process one-bath dyeing were investigated and their dyeabilities were compared. The differences between these two methods were negligibly small so that perfect one-bath one-step dyeing of polyester/cotton blend by one kind of disperse dye was achieved.

Dyeing of cotton and polyester/cotton blend with disperse dyes using sodium 2-(2,3-dibromopropionylamino)-5-(4,6-dichloro-1,3,5-triazinylamino)-benzenesulfonate

Synthesis and properties of spiroxazine polymer derived from cyclopolymerization of diallyldimethylammonium chloride and diallylamine

Polyurethane (PU) was synthesized by one-shot process and the PU nanofiber was prepared by electrospinning. In this study, electrospun PU multi-membranes were prepared with various coating thickness ratio of base resin to top resin, where the base resin contains melamine curing agent and acid catalyst and the top resin contains water-repellent agent of fluoro-carbon compounds. The PU nanofiber multi-membranes were analyzed by field-emission scanning electron microscopy, differential scanning calorimeter, breathability, tensile strenth, air permeability and water resistance. The results showed that the PU multi-membrane provided excellent waterproof and moisture permeability.

http://www.koreascience.or.kr:80/article/JAKO201121539232131.pdf

Fabrication of Waterproof and Moisture-permeable Polyurethane Nanofiber Multi-Membrane

Jacquard floor covering could be prepared from low-melting/regular sheath-core hybrid polyester, where the fiberis dyed in yarn state. With regard that the expected high shrinkage of the hybrid polyester in water makes problems in yarndyeing, low-temperature dyeing properties of the hybrid polyester were studied. The rate of shrinkage of low-melting hybridpolyester exceeds 9% in hot water above 90 , at such condition, cheese yarn dyeing is very difficult. Although disperse dyes℃exhaust in a relatively high speed on low-melting hybrid polyester, diffusion of these dyes to the core regular polyester wasextremely slow under 90 . Foron Blue E-BL 150, an anthraquinone E-type disperse dye, showed appreciable diffusion after℃48hrs dyeing at 90 . The fastness to rubbing and drycleaning were improved by one grade after reduction cleaning.℃ Keywords: low-melting polyester, sheath-core, dyeability, low-temperature dyeing, shrinkage, reduction cleaning 저융점폴리에스테르복합사의저온염색성 황지현 김창남· 1 · 마진숙

http://koreascience.or.kr:80/article/JAKO201220962921007.pdf

Nam-Sik Yoon

Papers

Photochromic behaviour of poly[N,N-[(3-dimethylamino)propyl]methacrylamide] having spiroxazine pendant group

Dyeing of cotton and polyester/cotton blend with disperse dyes using sodium 2-(2,3-dibromopropionylamino)-5-(4,6-dichloro-1,3,5-triazinylamino)-benzenesulfonate

Synthesis and properties of spiroxazine polymer derived from cyclopolymerization of diallyldimethylammonium chloride and diallylamine

Fabrication of Waterproof and Moisture-permeable Polyurethane Nanofiber Multi-Membrane

Dyeability of Low-melting Hybrid Polyester at Low Temperature