Crosslinked poly(ethylene oxide) containing siloxanes fabricated through thiol‐ene photochemistry

Abstract

Homogenous amphiphilic crosslinked polymer films comprising of poly(ethylene oxide) and polysiloxane were synthesized utilizing thiol‐ene “click” photochemistry. A systematic variation in polymer composition was Carried out to obtain high quality films with varied amount of siloxane and poly(ethylene oxide). These films showed improved gas separation performance with high gas permeabilities with good CO2/N2 selectivity. Furthermore, the resulting films were also tested for its biocompatibility, as a carrier media which allow human adult mesenchymal stem cells to retain their capacity for osteoblastic differentiation after transplantation. The obtained crosslinked films were characterized using differential scanning calorimetry, dynamic mechanical analysis, thermogravimetric analysis, FTIR, Raman‐IR, and small angle X‐ray scattering. The synthesis ease and commercial availability of the starting materials suggests that these new crosslinked polymer networks could find applications in wide range of applications. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 1548–1557

Advances in high carbon dioxide separation performance of poly (ethylene oxide)-based membranes

“…These reactions can occur by using a trithiol crosslinker ( Fig. 12 ) Kusuma et al [113] synthesized polymeric films including PEO and polysiloxane by a "click" photochemical method of thiolene. Films with appropriate performance were made using an alteration of PEO and polysiloxane leading to a CO 2 /N 2 separation with selectivity 51, and CO 2 permeability 114 Barrer ( Fig.…”

“…Free radical polymerization mechanism of poly(ethylene glycol) diacrylate and a multifunctional thiol[113] .…”

An automated lab-scale flue gas permeation membrane testing system at the National Carbon Capture Center

“…Two types of membranes have been successfully tested with the PCMS: flat, free-standing polymer films and single strand hollow fiber membranes. The films were sealed using a custom cell made from off the shelf CF flanges, the same design as used previously [15] but using 2-1/8" (DN25) CF flange-to-1/8" female NPT fitting adapters instead (obtained from MDC Vacuum -Hayward, CA).…”

Polysiloxanes Modified by Thiol‐Ene Reaction and Their Interaction with Gold Nanoparticles

“…It has been used notably for preparing hydrophilic or amphiphilic polysiloxanes, surface functionalized PDMS elastomers, antibacterial silicones, elastomers for modulating cell adhesion, self‐healing polysiloxanes, polysiloxane elastomers with optical properties, liquid crystal polysiloxanes, electroactive ferrocene‐grafted polysiloxanes, polysiloxanes with tunable dielectric properties, or contact lens elastomers . Thiol‐ene strategy is also used in the case of polysiloxanes for getting an efficient, orthogonal cross‐linking, often initiated photochemically and consequently, has been adapted to electrospinning and 3D printing …”