Aspects herein relate to biocompatible polyisobutylene-fiber composite materials and related methods. In one aspect a biocompatible composite material is included. The biocompatible composite material can include a network of fibers comprising one or more polymers to form a substrate and a continuous, interpenetrating polyisobutylene matrix that is non-porous and completely surrounds the electrospun fibers. Other aspects are included herein.

A polymer composition contains A) a high melt strength polypropylene in an amount ?30 wt % and ?90 wt % based on the polymer composition, B) an ethylene-based elastomer having a density ?855 to ?913 kg/m.sup.3, wherein the density is determined in accordance with ASTM D792 (2008), wherein the ethylene-based elastomer is present in the polymer composition in an amount ?10 wt % and ?49 wt % based on the polymer composition and C) a further polypropylene, wherein the further polypropylene is present in the polymer composition in an amount ?0 wt % and ?60 wt % based on the polymer composition and wherein the sum of the weight of high melt strength polypropylene and the further polypropylene is ?51 wt % based on the sum of the weight of the high melt strength polypropylene, the further polypropylene and the ethylene-based elastomer.

The invention relates to a foamed sheet comprising a polymer composition comprising a high melt strength polypropylene wherein the high melt strength polypropylene has a melt strength?45 cN, preferably ?50 cN, more preferably ?55 cN, even more preferably ?60 cN, most preferably ?65 cN, wherein the melt strength is determined in accordance with ISO 16790:2005 at a temperature of 200? C., using a cylindrical capillary having a length of 20 mm and a width of 2 mm, a starting velocity v.sub.0 of 9.8 mm/s and an acceleration of 6 mm/s.sup.2.

A method for producing polypropylene-based resin (PPBR) expanded beads may include dispersing, first expanding, and second expanding. In the dispersing, resin particles are dispersed in a dispersion medium, the resin particles each including a core layer, containing carbon black blended into PPBR in a predetermined ratio, based on 100 parts by mass of PPBR, and a covering layer covering the core layer, containing carbon black blended into a polyolefin-based resin (POBR) in a predetermined ratio, based on 100 parts by mass of POBR. The first expanding expands the core layer of the resin particle to obtain a first expanded bead having a bulk ratio of 5 to 25 times. The second expanding expands the first expanded beads further to obtain second expanded beads. An M.sub.2/M.sub.1 ratio of a bulk ratio M.sub.2 of the second expanded beads to a bulk ratio M.sub.1 of the first expanded beads is 1.2 to 3.0.

Aspects herein relate to biocompatible polyisobutylene-fiber composite materials and related methods. In one aspect a biocompatible composite material is included. The biocompatible composite material can include a network of fibers comprising one or more polymers to form a substrate and a continuous polyisobutylene matrix that is non-porous and completely surrounds the electrospun fibers. Other aspects are included herein.

A unimodal ethylene-co-1-butene copolymer that, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by combination of shear thinning and melt elasticity properties. A blown film consisting essentially of the unimodal ethylene-co-1-butene copolymer. A method of synthesizing the unimodal ethylene-co-1-butene copolymer. A method of making the blown film. A manufactured article comprising the unimodal ethylene-co-1-butene copolymer.

A unimodal ethylene-co-1-butene copolymer that, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by combination of shear thinning and melt elasticity properties. A blown film consisting essentially of the unimodal ethylene-co-1-butene copolymer. A method of synthesizing the unimodal ethylene-co-1-butene copolymer. A method of making the blown film. A manufactured article comprising the unimodal ethylene-co-1-butene copolymer.

The invention relates to a method for preparing a stable and thin liquid polyisobutene emulsion comprising the steps of i) heating a polyisobutene polymer, optionally mixing said polyisobutene polymer with a wax and/or oil, thereby obtaining a pre-mix, ii) mixing said pre-mix in water containing one or more surfactants in a concentration of the surfactant of maximum 5% wt. at a controlled flow rate, which flow rate is sufficiently slow to form particles of the pre-mix, thereby obtaining a pre-emulsion, and iii) homogenizing said pre-emulsion, thereby obtaining said polyisobutene emulsion with an average particle size of at maximum 100 m.

An object of the present invention is to provide a polymer electrolyte membrane meeting power generation properties and physical durability at the same time and having high durability. A polymer electrolyte membrane comprising a microporous membrane and a fluorine-based polymer electrolyte contained in a pore of the microporous membrane, wherein pore distribution of the microporous membrane has a pore distribution with a center of distribution in a pore diameter range of 0.3 m to 5.0 m, and the fluorine-based polymer electrolyte composition contains a fluorine-based polymer electrolyte (component A) having an ion exchange capacity of 0.5 to 3.0 meq/g.

The present invention relates to a method for producing a composite molded article having a flexural modulus at 150 C. of 25% or more of a flexural modulus at 23 C., including the steps of (1) placing glass fibers in a mold; (2) impregnating glass fibers with a polymerizable composition containing a cycloolefin monomer, a metathesis polymerization catalyst, a radical generator, and a compound represented by the general formula (I); (3) subjecting the above polymerizable composition with which the glass fibers are impregnated to a bulk polymerization to provide a composite molded article; and (4) demolding the composite molded article; and a composite molded article obtained by the above method. According to the method of the present invention, a composite molded article containing glass fibers, the composite molded article having excellent mechanical strength can be produced.