Abstract:
This document presents algae-derived antimicrobial fiber substrates, and a method of making the same. The fiber may be a synthetic fiber, but can also be formed as a cellulosic (e.g., cotton). In various implementations, an algae-derived antimicrobial fiber substrate can be made to have identical properties and characteristics of nylon-6 of nylon 6-6 polymer or the like, and yet contain antimicrobial, anti-viral, and/or flame retardant algal derived substances. Any of various species of red algae, brown algae, blue-green algae, and brown seaweed (marine microalgae and/or macroalgae) are known to contain a high level of sulfated polysaccharides with inherent antimicrobial, antiviral, and flame-retardant properties, and can be used as described herein. Additionally disclosed are algae-derived flexible foams, whether open-cell or closed-cell, with inherent antimicrobial, antiviral, and flame resistant properties. Further, a process of manufacturing is presented wherein the process may include one or more of the steps of: harvesting algae-biomass; and sufficiently drying the algae biomass.
Abstract:
The present invention generally concerns a concentrated sugar additive comprising (a) raffinate derived from citric acid recovery industry and (b) sugar-containing solution useful as high gloss agent for rubber surfaces, promoting a shine effect with improved adherence and fast drying, while preventing cracking, browning and premature aging.
Abstract:
The present invention relates to composite material of xyloglucan and clay for use as a coating material. The invention also relates to a method of producing the coating.
Abstract:
La présente invention concerne une composition comprenant l'association d'un film à base de chitosane, comprenant moins de 20% d'eau (en masse), et d'un hydrogel à base de chitosane, d'un dérivé de chitosane ou d'un complexe de chitosane, comprenant au moins 80% d'eau (en masse). La présente invention concerne également une composition comprenant l'association d'un support textile; d'un film à base de chitosane, comprenant moins de 20% d'eau (en masse) et d'un hydrogel à base de chitosane, d'un dérivé de chitosane ou d'un complexe de chitosane, comprenant au moins 80% d'eau (en masse), tel que l'hydrogel ne soit présent que sur l'une des deux faces du support textile. Lesdites compositions ont des applications notamment dans l'élaboration de prothèses en vue d'une implantation chirurgicale ou cosméto-esthétique. La présente invention concerne également des procédés d'obtention desdites compositions.
Abstract:
Surface treatment of organic polymer materials and material surfaces with oligo- or polysaccharide as passivation agent for deliberate alteration of the sorption properties, the diffusion barrier function, lubricative wetting and/or biocompatibility of organic polymers, is described. The passivating agent is derivatized with chemical entities that allow tight adsorption and/or covalent binding of the passivating agent to organic polymers or elastomer surfaces. The passivating agent may be derivatized with a primary functional group to allow covalent surface passivation by photo- or thermal activation of the derivative. The passivating agent may comprise one or more secondary functional groups that allow covalent binding of probe molecules and receptors to the passivated surface. The surface treatment improves the biocompatibility of medical devices and the performance of bioanalytical systems. Its application for heterogeneous affinity based assays, biosensor analysis platforms, microcontact printing, and lubrication of medical devices is described. Devices comprising surface passivated PDMS organic polymer are also described.
Abstract:
A solid substrate, the surface of which has been modified to introduce reactive groups of a hydrophilic nature thereon, the modification being provided by a primer comprising a first polysaccharide containing as reactive groups amino and hydroxyl groups; and a process for the preparation of such solid substrate.