Enhanced gas transport properties and molecular mobilities in nano-constrained poly[1-(trimethylsilyl)-1-propyne] membranes

Enhanced CO2 Permeability of Membranes by Incorporating Polyzwitterion@CNT Composite Particles into Polyimide Matrix

“…9−12 The compact chain packing below glass transition temperature endows glassy polymers with desirable diffusion selectivity for gas separation as well as good mechanical and thermal stability. 13,14 However, the gas transport property in a glassy polymer membrane is quite sensitive to the inherent structure of a polymer, 15 i.e., interchain spacing and chain mobility. Thus, a glassy polymer membrane with high selectivity often has relatively low permeability, 7,16,17 which should be rationally solved for practical application.…”

“…CO 2 capture is a crucial industrial process due to the necessity of natural gas purification and the urgency of controlling global warming. − Polymer-based membrane gas separation is considered as a promising technology for CO 2 capture because of the prominent advantages of high energy efficiency, design flexibility, scale-up simplicity and environmental friendliness. − Generally, a good gas separation membrane should possess high permeability, desirable selectivity, robust mechanical property and good operation stability. , Nowadays, glassy polymers constitute the majority of membrane materials, attributed to their high separation factor. − The compact chain packing below glass transition temperature endows glassy polymers with desirable diffusion selectivity for gas separation as well as good mechanical and thermal stability. , However, the gas transport property in a glassy polymer membrane is quite sensitive to the inherent structure of a polymer, i.e., interchain spacing and chain mobility. Thus, a glassy polymer membrane with high selectivity often has relatively low permeability, ,, which should be rationally solved for practical application.…”

Hypercrosslinked Additives for Ageless Gas‐Separation Membranes

“…[1] Currently,their widespread implementation is hindered by ar apid performance loss due to physical aging. [2] Physical aging is ap henomenon where polymer chains relax and converge [3] which reduces the performance of polymeric gas-separation membranes.T his has been the hurdle in the ultimate deployment of leading super glassy polymers,s uch as poly(1-trimethylsilyl-1-propyne) (PTMSP). Attempts to prevent this aging typically reduce gas permeabilities [4] or require prohibitively expensive additives.…”

Hypercrosslinked Additives for Ageless Gas‐Separation Membranes

“…[1] Currently, their widespread implementation is hindered by a rapid performance loss due to physical aging. [2] Physical aging is a phenomenon where polymer chains relax and converge [3] which reduces the performance of polymeric gas separation membranes. This has been the hurdle in the ultimate deployment of leading super glassy polymers like poly(1-trimethylsilyl-1-propyne) (PTMSP).…”