A catalyst complex for catalysis of degradation of a polymer material is described. Said complex comprises a magnetic particulate body containing iron oxide at its surface with an average diameter of 150-450 nm, and a plurality of catalytic groups grafted onto the iron oxide surface of the magnetic particulate body, which catalytic groups comprise a bridging moiety and a catalyst entity, wherein the bridging moiety comprises a functional group for adhesion or bonding to the iron oxide surface and a linking group towards the catalyst entity, and wherein the catalyst entity comprises a positively charged aromatic heterocycle moiety, and a negatively charged moiety for balancing the positively charged aromatic moiety.

The invention concerns a method for the surface crosslinking of a polymer, in particle form, having one or a plurality of labile hydrogen functions, comprising a step of implementing a crosslinking agent comprising at least two functions likely to react with the labile hydrogen functions of the polymer, the crosslinking method being carried out at a temperature lower than the melting point of the polymer. The invention also concerns a powder particle and the uses of same.

Covalently linked linear polyethylenimine (PEI) clusters are provided that change conformation depending upon changes in counterion concentrations. The structures may be used for the storage, delivery, and/or transport of substances.

The present invention relates to a method for selective cell attachment/detachment, cell patternization and cell harvesting by means of near infrared rays. More particularly, conducting polymers or metal oxides having exothermic characteristics upon irradiation of near infrared light is used as a cell culture scaffold, thus selectively attaching/detaching cells without an enzyme treatment. The scaffold has an effect of promoting proliferation or differentiation of stem cells, and therefore, can be used as a stem cell culture scaffold. The scaffold enables cell attachment/detachment without temporal or spatial restrictions, thus enabling cell patternization.

Provided are a thermosetting resin composition comprising an adduct resin (X) that is a reaction product of an amine-epoxy resin (A) and an epoxy modifier (B) described below, and an epoxy resin curing agent (C), wherein the adduct resin (X) is a reaction product obtained by reacting 1 to 20 parts by mass of the epoxy modifier (B) with 100 parts by mass of the amine-epoxy resin (A), and a prepreg, a fiber-reinforced composite material, and a high-pressure gas container in which the thermosetting resin composition is used.

Epoxy modifier (B): at least one selected from the group consisting of meta-xylylenediamine, para-xylylenediamine, 4,4-diaminodiphenylmethane, and 4,4-diaminodiphenylsulfone.

Anion exchange polymers having high OH.sup.? conductivity, chemical stability, and mechanical stability have been developed for use in AEMs. The anion exchange polymers have stable hydrophobic polymer backbones, stable hydrophilic quaternary ammonium cationic groups, and hydrophilic phenolic hydroxyl groups on the polymer side chains. The polymers have polymer backbones free of ether bonds, hydrophilic polymer side chains, and piperidinium ion-conducting functionality, which enables efficient and stable operation in water or CO.sub.2 electrolysis, redox flow battery, and fuel cell applications. The polymer comprises a plurality of repeating units of formula (I) ##STR00001## Anion exchange membranes and membrane electrode assemblies incorporating the anion exchange polymers are also described.

The primary subject of the invention is an iron oxide/hydroxide-containing conducting polymer composite, which comprises a) a conducting polymer, and b) an iron oxide/hydroxide compound incorporated in the conducting polymer wherein the composite contains iron oxide/hydroxide compound other than magnetite, and the conducting polymer is different from polyaniline (PANI). The further subject of the invention is the process for the electrochemical production of the above-mentioned conducting polymer composite by one of the following processes: Process I, which comprises the following steps: a) providing a conducting polymer layer; b) electrochemical reduction of the conducting polymer layer; c) contacting the reduced conducting polymer layer with an aqueous solution of ferrate ions; d) optionally repeating steps b) and c); e) optionally separating and drying the obtained composite; or Process II, which comprises the following steps: a) providing a conducting polymer layer; b) contacting the conducting polymer layer with an aqueous solution of ferrate ions; c) electrochemical oxidation of the conducting polymer layer in an aqueous solution of ferrate ions; d) electrochemical reduction of the oxidized conducting polymer layer in an aqueous solution of ferrate ions; e) optionally repeating steps c) and d); e) optionally separating and drying the obtained composite.

Chemical compositions are provided that include at least one of Formula I or Formula II: ##STR00001##
where n and m are integers, at least one of R.sup.1 or R.sup.2 comprises an aromatic moiety, and X is selected from the group consisting of CH.sub.2, NH, O, S, SO.sub.2, and combinations thereof. Composites formed from the chemical composition and at least one reinforcement material are also provided.

A biocompatible, covalently cross-linked, polymer that is obtained by reacting an electrophilically activated polyoxazoline (EL-POX) with a nucleophilic cross-linking agent is disclosed. The EL-POX comprises m electrophilic groups; and the nucleophilic cross-linking agent comprises n nucleophilic groups, wherein the m electrophilic groups are capable of reacting with the n nucleophilic groups to form covalent bonds; wherein m2, n2 and m+n5; wherein at least one of the m electrophilic groups is a pendant electrophilic group and/or wherein m3; and wherein to the EL-POX comprises an excess amount of electrophilic groups relative to the amount of nucleophilic groups contained in the nucleophilic cross-linking agent. Biocompatible medical products and kits comprising the cross-linked POX-polymers are also disclosed.

Multilayer film prepared by a layer-by-layer process that is an effective barrier for humidity and oxygen.