immobilization of glucose oxidase on nonwoven fabrics with bombyx mori silk fibroin gel

the enzyme glucose oxidase (god) was immobilized on the nonwoven fabrics, which have excellent properties in diffusivity of substrates, mechanical strength, and handling, with bombyx mori silk fibroin gel. the nonwoven fabrics of silk fibroin, viscose rayon, polyethyleneterephalate, 6-nylon, and polypropylene with activated surface by flu..

polymeric membranes for silicon based (bio)sensors

during the last decade, chemical and biochemical sensor research has benefited from the availability of new technologies and materials. new embodiments of classical devices have resulted from the use of e.g., solid-state technology for the realization of the transducers. in this paper we describe several examples of membrane deposition te..

mechanical properties of poly(ethylene terephthalate) fibers imparted hydrophilicity with aminolysis

poly(ethylene terephthalate) fibers were aminolyzed with hydradine hydrade and ethylenediamine. the moisture regain of aminated fibers increased with increasing weight loss. it was suggested that the aminolysis reaction took place mainly in the amorphous regions. this leads to an increase of the accessibility of moisture. the mechanical p..

adhesion of polymers to reinforcing fibres

a single fibre pull out technique is presented which makes it possible to measure the strength in the interface between fibre and polymer with high precision even if the embedded length of the fibre is short. the method allows measurements for all kinds of fibres in thermoplastic or thermosetting polymers. the effect of fibre surface trea..

comparative evaluation of the structure and properties of certain granulated and fibrous activated carboniferous sorbents

this paper presents the results of the comparative evaluation of the structure and sorption properties of fibrous (aybm- -mh) and granulated (ckh-ik) carboniferous sorbents. the structure of sorbents was investigated using scanning electron microscopy (sem) and electron paramagnetic resonance (epr), while the sorption properties were stud..

crystallization of fiber-reinforced poly(phenylene sulfide) composites. i. experimental studies of crystallization rates and morphology

the isothermal crystallization from the melt of unreinforced poly(phenylene sulfide) (pps) and of model carbon, aramid, and glass-fiber-reinforced pps composites was studied by differential scanning calorimetry and optical microscopy. crystallization was studied as a function of temperature, and the fiber contents in the composites were v..

effect of coupling agents on the mechanical properties of mica/epoxy and glass fiber/mica/epoxy composites

the effect of coupling agents, two silane and one zirconate, on the mechanical properties of mica/epoxy and glass fiber/mica/epoxy composites has been investigated. the results showed that tensile modulus and flexural strength and modulus values were improved by the surface treatment of the coupling agents. the property retention was also..

normal and surface-enhanced raman investigations of carbon materials

raman spectroscopy is rapidly developing as a nondestructive technique for the surface characterization of carbon materials. an advantage of raman analyses is that the substrate surface may be both spatially localized (determined by the position and diameter of the probe beam) and effectively depth profiled (comparing normal and surface-e..

strength, toughness. mineral wool-polyethylene pulp-reinforced mortars

mortar sheet products can be made stiff and brittle by reinforcing with stiff fibers having strong chemical bonding to cement paste, such as asbestos. they can be made tough and pliable by reinforcing with softer fibers having poor bonding to cement, such as polypropylene, where the fiber stress is transferred over longer distances from d..

microphotometric quantification of crystal growth in gels for the study of calcium oxalate urolithiasis

this paper gives a review on an efficient microtechnique (gel crystallization method; gcm) which quantifies crystal growth in gel matrices, and its application to research into urinary stone formation. relative crystal growth rates (vcr) of calcium oxalate hydrates (caox) were determined by simultaneous multiple measurements in 96-well mi..