Abstract:
A material for use with a 3D printer comprises a polyaryletherketone (PAEK) having an amorphous morphology. In some embodiments, the material also includes one or more further compounds having an amorphous morphology. In some further embodiments, the material includes, in addition to an amorphous PAEK, a compound having a semi‐crystalline morphology.
Abstract:
Water vapor transport membranes for ERV and other water vapor transport applications are provided. The membranes include a substrate and an air impermeable selective layer coated on the substrate, the selective layer including a cellulose derivative and a sulfonated polyaryletherketone. In some embodiments the sulfonated polyaryletherketone is in a cation form and/or the selective layer includes s PEEK and CA in an s PEEK:CA (wt.:wt.) ratio in the range of about 7:3 to 2:3. Methods for making such membranes are provided. The methods include applying a coating solution/dispersion to a substrate and allowing the coating solution/dispersion to dry to form an air impermeable selective layer on the substrate, the coating solution/dispersion including a cellulose derivative and a sulfonated polyarylether ketone. In some embodiments the sulfonated polyaryletherketone is in a cation form and/or the coating solution/dispersion includes s PEEK and CA in an sPEEK:CA (wt.:wt.) ratio in the range of about 7:3 to 2:3.
Abstract:
A method of making an inlay or onlay for tooth restoration comprises assessing a cavity which is to be provided with the inlay or onlay and making an inlay or onlay which is shaped to fit within the cavity. The inlay or onlay comprises polyetheretherketone.
Abstract:
A method of making a prosthetic dental item comprises selecting a block having a square or rectangular cross-section along is extent, wherein said block comprises polyetheretherketone and,optionally, an apatite, wherein said polymeric material has a crystallinity of at least 25%. The method comprises machining the block in dependence upon data collated using digital technology.Since the crystallinity of the material selected is high, a post-machining step whereby crystallinity is increased can be avoided, and dental items of high precision can be formed.
Abstract:
A shape memory composition includes a high temperature ionomer having a glass transition temperature or a melting temperature of 100°C or greater and a modulus at room temperature of 1 x 10 8 Pa or greater, the high temperature ionomer including a polymer with ionic units either within the backbone of the polymer or pendant to the backbone or both. The shape memory composition includes crystalline or glassy domains of a low molecular weight non-polymeric compound dispersed in the high temperature ionomer and interacting the ionic units of the high temperature ionomer to form a secondary network characterized by being a reversible network in that it is compromised by the heating of the low molecular weight non-polymeric compound to change out of its crystalline or glassy phase.
Abstract:
The present invention relates to a resin composition and an optical compensation film formed by using same, and more specifically, to a resin composition comprising (a) an alkyl (meth) acrylate-based unit, (b) a styrene-based unit, (c) a 3 to 6-element heterocyclic unit substituted with at least one carbonyl group, and (d) a vynil cyanide, and to an optical film formed by using the resin composition. Also, the resin composition according to the present invention can provide the optical film having a superior optical property, optical transparency, little haze, and superior mechanical strength and heat resistance, and thus the optical film formed by using the resin composition can be applied to information/electronic devices, such as a display device, for a variety of purposes, and is especially appropriate as a compensation film which is used in an IPS mode.