An interpenetrating network (IPN) polymer membrane material includes a soft polyurethane interspersed with a crosslinked conducting polymer. The material can be reversibly “switched” between its oxidized and reduced states by the application of a small voltage, ˜1 to 4 volts, thus modulating its diffusivity.

Disclosed are methods of making porous polymeric materials. Also provided herein are porous polymeric materials prepared by the disclosed methods.

Disclosed is a hydrogenated norbornene ring-opened polymer, wherein a proportion of a norbornene-derived repeating unit is 90% by mass or more, a meso diad fraction of the norbornene-derived repeating unit is 80% or more, and in an X-ray diffraction pattern measured at 25 C. using a CuK radiation source, an X-ray diffraction peak is observed which has a peak top positioned in a diffraction angle (2) range of 17 or more and 18 or less.

An interpenetrating network (IPN) polymer membrane material includes a soft polyurethane interspersed with a crosslinked conducting polymer. The material can be reversibly switched between its oxidized and reduced states by the application of a small voltage, 1 to 4 volts, thus modulating its diffusivity.

A cyclopentene ring-opening polymer having, at a polymer chain end, a structure where a polymer chain and a group containing an alkoxysilyl group are bonded through NH and having a weight average molecular weight of 100,000 to 1,000,000, wherein the structure is a structure represented by the following general formula (1):
pCPY1-NHY2-Si(OR1)a(R2)3-a(1)
where, in the general formula (1), pCP represents a cyclopentene ring-opening polymer chain, Y1 represents a bivalent hydrocarbon group having 1 to 20 carbon atoms, each of R1 and R2 represents a hydrocarbon group having 1 to 20 carbon atoms, Y2 represents a bivalent hydrocarbon group having 1 to 20 carbon atoms in which NH may be interposed, and a is an integer of 1 to 3.

The present disclosure provides compositions comprising: a) a copolymer prepared by a method comprising polymerizing in the presence of a metathesis catalyst: i) a first monomer, wherein each instance of the first monomer is independently of the formula: ##STR00001## or salt thereof; ii) a second monomer, wherein each instance of the second monomer is independently of the formula: ##STR00002## or a salt thereof; iii) optionally a third monomer, wherein the third monomer is different from the first monomer and the second monomer; and iv) optionally a reprocessing catalyst; and b) optionally the reprocessing catalyst; wherein the reprocessing catalyst is a Br?nsted acid, Lewis acid, Br?nsted base, Lewis base, or a salt thereof; provided that the composition comprises at least one of the reprocessing catalyst of iv) and the reprocessing catalyst of b). The compositions may be reprocessed (e.g., remolded) under elevated temperature and/or elevated pressure.

Provided is a poly-p-xylyene having at least one chemically active functional group present in a form of particles. In an embodiment, the functionalized poly-p-xylylene is synthesized via CVD, and electrospinning is then performed at a relatively low polymer concentration, so as to produce functionalized poly-p-xylylene particles. The functionalized poly-p-xylyene particles have a particle size at nano-scale or micro-scale. Such functionalized poly-p-xylyene particles can be applied to biological fields extensively.

The present disclosure relates to polymers, methods for polymer synthesis, and methods of modifying the backbone of said polymers. Modification of the polymer backbone via a sigmatropic rearrangement allows facile entry into new, highly ordered polymers.

One aspect relates to a layered structure with a substrate, a first layer over the substrate, and a second layer over the first layer. The substrate and the second layer are an electrically conductive material and the first layer is an insulating material or the substrate and the second layer are insulating material and the first layer is electrically conductive material. At least one of the first and second layers includes an electrically conductive polymer.

A cyclopentene ring-opening polymer having, at a polymer chain end, a structure where a polymer chain and a group containing an alkoxysilyl group are bonded through NH and having a weight average molecular weight of 100,000 to 1,000,000, wherein the structure is a structure represented by the following general formula (1): pCPY1-NHY2-Si(OR1)a(R2)3-a (1) where, in the general formula (1), pCP represents a cyclopentene ring-opening polymer chain, Y1 represents a bivalent hydrocarbon group having 1 to 20 carbon atoms, each of R1 and R2 represents a hydrocarbon group having 1 to 20 carbon atoms, Y2 represents a bivalent hydrocarbon group having 1 to 20 carbon atoms in which NH may be interposed, and a is an integer of 1 to 3.