Abstract: A molecular assembly having a structural formation of amphiphilic molecules is disclosed where the amphiphilic molecules are selected from a group containing amphiphilic molecules which a) have a hydrophobic moiety and a hydrophilic moiety b) are soluble in a polar aprotic solvent and form self-organizing layer structures in the absence of the polar aprotic solvent, and c) orient molecularly in formed layer structures at an interfacial layer, or in an aqueous environment. The amphiphilic molecules in the formed layer structure are in contact with an aqueous environment. A method for coating a solid surface with a molecular assembly is also disclosed, wherein the amphiphilic molecules are dissolved in a polar aprotic solvent, and resulting solution is applied to a solid surface by spin coating.

Abstract: The invention concerns the field of polymer chemistry and relates to membranes, such as those that can be used, for example, for the preparation of aqueous solutions using microfiltration or ultrafiltration. The object of the present invention is to specify membranes which have improved anti-fouling properties and sliding friction properties. The object is attained with membranes comprised at least predominantly of multiblock copolymers of the general formula (1) where X=connection point E=C2 to C4 alkyl ether A=other block component not containing silicone R=C1 to C4 alkyl radical and/or phenyl radical m=1<m<500 n=0?n<100 o=1<o<10 p=1<p<10 z=1<z<25, the molar ratio of the silicone-containing block component and the other block component A in the multiblock copolymer is between 5:1 and 1:5, and wherein the silicon-containing block components are predominantly arranged at the surface of the membranes.

Abstract: A method for detecting and influencing an uptake of bioactive substances in a hydrogel material and/or release of bioactive substances from the hydrogel material, wherein the hydrogel material is a polymer network formed from charged and uncharged building blocks, the affinity of which network for bioactive substances is configurable by parameters defining the charged building blocks, and whose electrical charge storage capacity depend on interaction with the hydrogel binding of bioactive substances to the hydrogel material. When the hydrogel material is contacted with a biofluid, a change in electrical resistance and/or a change in charge storage capacity of the hydrogel material is detected. Uptake or a release of bioactive substances from the hydrogel material into the biofluid is determined by change in electrical resistance. The invention further relates to a suitable electrically conductive hydrogel material.

Abstract: Modified plastic surfaces with perfluoropolymers are provided, whereby plastic surfaces that are intended for use under tribological conditions have substantially improved assembly properties and/or sliding friction properties and exhibit a very low degree of wear. Accordingly, modified plastic surfaces with perfluoropolymers are provided in which modified perfluoropolymer (micro)powders are present at the surface of plastics that comprise olefinically unsaturated double bonds at least at the surface such that the modified perfluoropolymer (micro)powders are chemically covalently bonded via a radical coupling of the olefinically unsaturated double bonds with perfluoropolymer (peroxy) radicals of the modified perfluoropolymer (micro)powders after a reactive conversion under mechanical stress at room temperature.

Abstract: Modified plastic surfaces with perfluoropolymers are provided, whereby plastic surfaces that are intended for use under tribological conditions have substantially improved assembly properties and/or sliding friction properties and exhibit a very low degree of wear. Accordingly, modified plastic surfaces with perfluoropolymers are provided in which, after a reactive conversion under mechanical stress at room temperature, at least the reactive —NH groups and/or —OH groups present at the surface of plastics are present in a chemically covalently coupled manner with the perfluoropolymer carboxylic acid halide present at least in the surface-proximate region of modified perfluoropolymer (micro)powders and/or with the grafted (meth)acrylic acid halide present via perfluoropolymer (peroxy) radicals of the perfluoropolymer (micro)powders and/or (meth)acrylic acid that has been modified into (meth)acrylic acid halide before the reactive conversion.

Abstract: Modified plastic surfaces with perfluoropolymers are provided, whereby plastic surfaces that are intended for use under tribological conditions have substantially improved assembly properties and/or sliding friction properties and exhibit a very low degree of wear. Accordingly, modified plastic surfaces with perfluoropolymers are provided in which modified perfluoropolymer (micro)powders are present at the surface of plastics that comprise olefinically unsaturated double bonds at least at the surface such that the modified perfluoropolymer (micro)powders are chemically covalently bonded via a radical coupling of the olefmically unsaturated double bonds with perfluoropolymer (peroxy) radicals of the modified perfluoropolymer (micro)powders after a reactive conversion under mechanical stress at room temperature.

Abstract: Modified plastic surfaces with perfluoropolymers are provided, whereby plastic surfaces that are intended for use under tribological conditions have substantially improved assembly properties and/or sliding friction properties and exhibit a very low degree of wear. Accordingly, modified plastic surfaces with perfluoropolymers are provided in which, after a reactive conversion under mechanical stress at room temperature, at least the reactive —NH groups and/or —OH groups present at the surface of plastics are present in a chemically covalently coupled manner with the perfluoropolymer carboxylic acid halide present at least in the surface-proximate region of modified perfluoropolymer (micro)powders and/or with the grafted (meth)acrylic acid halide present via perfluoropolymer (peroxy) radicals of the perfluoropolymer (micro)powders and/or (meth)acrylic acid that has been modified into (meth)acrylic acid halide before the reactive conversion.

Abstract: The invention concerns the field of polymer chemistry and relates to membranes, such as those that can be used, for example, for the preparation of aqueous solutions using microfiltration or ultrafiltration. The object of the present invention is to specify membranes which have improved anti-fouling properties and sliding friction properties. The object is attained with membranes comprised at least predominantly of multiblock copolymers of the general formula (1) where X=connection point E=C2 to C4 alkyl ether A=other block component not containing silicone R=C1 to C4 alkyl radical and/or phenyl radical m=1<m<500 n=0?n<100 o=1<o<10 p=1<p<10 z=1<z<25, the molar ratio of the silicone-containing block component and the other block component A in the multiblock copolymer is between 5:1 and 1:5, and wherein the silicon-containing block components are predominantly arranged at the surface of the membranes.

Abstract: The invention pertains to the fields of chemistry and construction and relates to surface-modified glass fiber for reinforcing concrete, such as those which can be used in textile-reinforced concrete (textile concrete), for example. The object of the present invention is to provide surface-modified glass fibers for reinforcing concrete, which glass fibers are at least substantially protected against an alkaline attack caused by the calcium hydroxides released during the cement reaction and/or dissolution and leaching processes generated thereby.

Abstract: The invention pertains to the fields of chemistry and mechanical engineering and relates to glass fiber surfaces which are modified without sizing material and silane, which glass fiber surfaces can be further processed into and used as composite materials, for example as reinforcing fiber materials for plastics, and to a method for producing the modified glass fiber surfaces. The object of the present invention is to provide glass fiber surfaces modified without sizing materials and silane, which glass fiber surfaces exhibit improved properties overall and for a further processing into composite materials, and furthermore to provide a simple and cost-effective method for producing glass fiber surfaces modified in such a manner.

Abstract: The present invention concerns a process for the preparation of a porous carbon structure comprising the steps: a) providing a template comprising voids, b) filling of at least part of the voids with a precursor for the formation of the porous carbon structure, c) carbonizing the precursor for the formation of the porous carbon structure and d) removing at least part of the template. In preferred embodiments the precursor for the formation of the porous carbon structure is a formaldehyde-phenol resin, especially a cross-linked resorcinol-formaldehyde resin. The template further preferably comprises a block copolymer and an amphiphilic molecule, wherein the block copolymer comprises polymeric units of at least one lipophilic monomer and polymeric units of at least one hydrophilic monomer. Further preferred is a process wherein the template comprises a bimodal mixture of particles of silicon dioxide.

Abstract: A method is disclosed for the differentiated sequestration of substances of different substance groups A and B in a sulfated and/or sulfonated hydrogel while simultaneously releasing substances of substance group A or B from the sulfated and/or sulfonated hydrogel into the biofluid. The sulfated and/or sulfonated hydrogel is selected from a group of hydrogels of Type 1, 2, 3, 4 and consist of uncharged and charged components. The charged components are characterized by calculating the number of sulfated or sulfonated groups per repeat unit divided by the molecular mass of the repeat unit, for each of Type 1 2 3 and 4. The swollen hydrogels have a concentration of sulfated or sulfonated groups in mmol/ml for Type 1, Type 2, Type 3 and Type 4. The concentration of substances of each substance group A and group B in the biofluid is influenced by the selection of the type of hydrogel.

Abstract: The invention relates to the field of chemistry and to the blends that can by way of example be used for rolls and roll coverings in the printing, textile, paper and graphic industry. The problem addressed by the present invention is provision of blends that have improved physical properties, and of a simple low-cost process with low energy consumption for producing same. The problem is solved via blends of thermoplastic polyurethanes and rubbers, consisting of rubber and from 5 to 80% by weight of thermoplastic polyurethanes, where the materials intermesh with one another in the regions of contact between rubber and polyurethanes. The problem is further solved via a process in which at least one rubber and from 5 to 80% by weight of polyurethane precursors are mixed and homogenized, where the precursors are prepolymers made of polyisocyanate(s) and of macroglyeol(s) and at least one chain extender, and/or monomers of polyisocyanates, of macroglycols and of chain extenders.

Abstract: The present invention relates to rubber or elastomer compositions as can be used for vehicle tires, and to a method for the production of the rubber or elastomer compositions. The elastic modulus of the compositions can be adapted depending on the temperature and/or the application conditions, and is a cost-effective and easily implemented method for the production of the compositions. The rubber or elastomer compositions contain at least one rubber or elastomer matrix and at least 20 to 150 phr of a phase change material in solid or liquid form. The compositions may be made by mixing the at least one rubber and the at least 20 to 150 phr of a phase change material in solid or liquid form, or the at least one rubber is at least brought into contact with the phase change material, and further processing steps can be performed, and a vulcanization can be performed.

Abstract: An elastomeric composition that has a high tensile strength and high hardness is produced by a method that is cost-efficient and easy to carry out. The object is attained by an elastomeric composition that contains at least one base elastomer, at least one hydrophilic polymer, and at least one inorganic salt. The object is furthermore attained by a method for producing an elastomeric composition in which at least one rubber, at least one hydrophilic polymer and at least one inorganic salt are mixed and subsequently vulcanized, the elastomeric composition is then at least partially brought into contact with water, and afterwards the water is at least partially removed from the elastomeric composition. The elastomeric composition according to the invention can, for example, be used in vehicles and machines as a seal, grommet, disc, coupling or membrane.

Abstract: The invention relates to a method for forming a functional network of human neuronal and glial cells, wherein the cells are introduced into a synthetic hydrogel system with the components polyethylene glycol (PEG) and heparin and are cultivated therein. The cells are introduced into the PEG heparin hydrogel system together with one of the gel components, either PEG or heparin, with which the cells were previously mixed such that the cells are already located in the hydrogel system during the formation of the three-dimensional hydrogel.

Abstract: Laboratory equipment holder to mount and position glass flasks in a simple and secure manner. The laboratory equipment holder includes of a component on which at least one holding device is attached and both the component and also the holding device and the connection between the component and holding device can be mechanically loaded with at least one filled piece of laboratory equipment, and the component includes on one of its sides at least one recess. At least the end thereof within the component is embodied in an at least semicircular manner and at least the smallest diameter of the semicircular section of the recess is smaller than the largest diameter of the truncated conical neck of the piece of laboratory equipment and/or is smaller than the largest diameter of the beaded edge-like enlargement of the neck of the piece of laboratory equipment.

Abstract: Surface-structured polymer bodies in which polymer bodies with dimensions of at least ?100 cm2 are present. The surfaces of the bodies are at least partially covered with at least one nano- to micrometer-thick layer, and the layers are physically and/or chemically coupled to the polymer bodies, and the surface of the polymer bodies with the layers is at least partially deformed. The deformation is periodic within a deformation type and the arrangement of multiple different deformation types on a polymer body is anisotropic or isotropic, and the elastic modulus of the material of the polymer body is less than the elastic modulus of the layer materials.

Abstract: A polymer-based material having covalently bonded enzymatically degradable peptide sequences not degradable by the biological and metabolic activity of cells and tissues is disclosed, wherein the peptide sequences are incorporated into the polymer-based material or conjugated to the polymer-based material. The peptide sequence can be part of the three-dimensional or two-dimensional structure of the polymer-based material. A controlled degradation of a covalent bond in the peptide sequence is effected. Use of such polymer-based material for an in vitro production of cell cultures or tissues or organs, for an in vivo stabilization of donated cells, tissues or organs is also disclosed. An adhesive bond between the material and the sample, i.e. cells, tissues, or organs is controlledly degradable without destroying the integrity of the sample.

Abstract: A method for curing and surface functionalization of molded parts, including processing materials that contain at least one unsaturated radically or cationically curable reactive resin system and further substances to form a molded part and cross-linking the materials up to dimensional stability during or after the processing. The method additionally includes subjecting the molded part to energetic radiation or energetic particles at least one of during the cross-linking and subsequent to the cross-linking to essentially complete curing at least of a surface region of the molded part to produce an essentially completely coatable molded part surface.