Described are shape-memory polymers that have a composite prepolymer crosslinked with a stoichiometric amount of a multifunctional crosslinker, the composite prepolymer having a branched or telechelic prepolymer having a low polydispersity reacted with a non-crystalline chain extender. Also described are methods of making shape-memory polymers by reacting a branched or telechelic prepolymer having a low polydispersity with a non-crystalline chain extender to form a composite prepolymer, and crosslinking a stoichiometric amount of a multifunctional crosslinker with the composite prepolymer, thereby forming the shape-memory polymer.

New shape memory polymer compositions, methods for synthesizing new shape memory polymers, and apparatus comprising an actuator and a shape memory polymer wherein the shape memory polymer comprises at least a portion of the actuator. A shape memory polymer comprising a polymer composition which physically forms a network structure wherein the polymer composition has shape-memory behavior and can be formed into a permanent primary shape, re-formed into a stable secondary shape, and controllably actuated to recover the permanent primary shape. Polymers have optimal aliphatic network structures due to minimization of dangling chains by using monomers that are symmetrical and that have matching amine and hydroxl groups providing polymers and polymer foams with clarity, tight (narrow temperature range) single transitions, and high shape recovery and recovery force that are especially useful for implanting in the human body.

The present disclosure relates to a photocurable polysiloxane composition for 3D printing and a dental model including the same. In regard to the photocurable composition for 3D printing, including a novel polysiloxane compound according to one aspect, the cured product thereof exhibits excellent properties in terms of hardness, strength, elongation, coloring resistance against heat, coloring resistance against light, flexural properties, and biocompatibility, and thus the cured product is appropriate for use as a dental material. In addition, since the photocurable composition is liquid and thus the molecular weight and viscosity thereof is easily controllable, the photocurable composition is suitable for a 3D printing process.

A wearable device including a body having one or more embedded electronic components, the body further including a thermoset material having a polymeric backbone with at least one urethane linkage and a glass transition temperature. At a first temperature that is lower than the glass transition temperature, the body has an original shape. When the body is heated to a second temperature that is higher than the glass transition temperature, the body is deformable from the original shape to a first shape and when the body is cooled to a third temperature that is lower than the glass transition temperature, the first shape is maintained. The body is further configured to transition from the first shape to the original shape when the body is heated from the third temperature to a fourth temperature that is higher than the glass transition temperature.

Embodiments of the present disclosure provide for methods of detecting, sensors (e.g., chromogenic sensor), kits, compositions, and the like that related to or use tunable macroporous polymer. In an aspect, tunable macroporous materials as described herein can be used to determine the presence of a certain type(s) and quantity of liquid in a liquid mixture.

A wearable device including a body having one or more embedded electronic components, the body further including a thermoset material having a polymeric backbone with at least one urethane linkage and a glass transition temperature. At a first temperature that is lower than the glass transition temperature, the body has an original shape. When the body is heated to a second temperature that is higher than the glass transition temperature, the body is deformable from the original shape to a first shape and when the body is cooled to a third temperature that is lower than the glass transition temperature, the first shape is maintained. The body is further configured to transition from the first shape to the original shape when the body is heated from the third temperature to a fourth temperature that is higher than the glass transition temperature.

Some embodiments relate to a dual cure polymerization system combining aza-Michael addition polymerization and photopolymerization. Some embodiments also relate to a dual cure polymerization system for preparing interpenetrating polymer networks. Some other embodiments relate to compositions and articles obtainable by a process of the invention and uses thereof.

The present invention relates to a process for producing a molding (FK), comprising the production of a thermoplastic polyurethane, comprising the reaction of at least one polyisocyanate composition, at least one chain extender, and at least one polyol composition, the production of a molding (FK*) from the thermoplastic polyurethane, the heating of the molding (FK*) to a temperature below the temperature at which the molding (FK*) is permanently deformable, and above the switching temperature of the thermoplastic polyurethane, the compressing of the heated molding (FK*) to give a molding (FK), and the cooling of the molding (FK) to a temperature below the switching temperature of the thermoplastic polyurethane, and also to the moldings obtainable or obtained by such a process.

A patch of material is configured to be applied to human tissue. The patch includes a film comprising poly(L-lactide) and poly(#-caprolactone). The film is configured to self-deploy between a first position and a second position in response to a temperature. The film is applied to the human tissue when the patch of material is in the second position, in which the film has a planar configuration.

An embodiment includes a system comprising: an iodine containing thermoset open-cell shape memory polymer (SMP) foam that is x-ray visible; wherein (a) the SMP foam is configured to expand from a compressed secondary state to an expanded primary state in response to thermal stimulus, (b) the SMP foam is a poly(urethane-urea-amide). Other embodiments are described herein.