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Showing 1 to 10 of 10 for “"microporous polymers"”.
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Designing Microporous Polymers for Separations
… in ring-opening metathesis polymerization (ROMP) polymers with pore-generating side chains. Macromonomers with four discrete monodispersities are separated and polymerized to produce bottlebrush polymers with monodisperse side chains. Each bottlebrush polymer is fabricated into a free-standing …
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In-line treatment of metal contaminated storm water by charred microporous polymers
… There are a number of commercially available microporous carbons that have a demonstrated affinity for the uptake of metals. Industry currently utilizes in-line storm water treatment processes to remove settle able solids, oils and greases; these processes could easily be altered to include …
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Post-Synthetic Chemical and Morphological Modifications of Polymer Membranes for Gas Separations
Microporous porous polymers have rigid backbone structures or bulky monomer units that inhibit efficient packing of polymer segments, resulting in high free volume materials with good diffusion selectivity when processed into films. As a result of these characteristics, microporous polymers became …
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Functional Materials From Self-Assembled Macrocycles
… organic structure or MOFs. </p> <p>Conjugated microporous polymers (CMPs) have been the subject of many recent chemical and material developments. While these polymers are typically amorphous, we designed a diacetylene containing tetra-amide macrocycle that self-assembles into columns through …
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Polymer molecular sieve membranes
… of membranes from novel molecularly defined polymers and understanding their physical properties, particularly the transport properties of gas molecules in polymer membranes. First, we demonstrate a simple approach of fabricating novel polymer nanocomposite membranes using established …
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Microporous Polymer-Metal Organic Framework (MOF) Hybrid Materials for Separations
… in the chemical industry. Recent advancements in microporous materials, such as polymers of intrinsic microporosity (PIMs) and metal-organic frameworks (MOFs), have demonstrated performance improvements over conventional polymers. Mixed-matrix membranes (MMMs) have emerged as a potent strategy, …
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Synthesis and Characterization of Nanoporous Copolymers with Potential Gas Storage Applications
Nanoporous organic polymers, including hypercrosslinked polymers (HCPs), covalent organic frameworks (COFs), polymers of intrinsic microporosity (PIMs), and conjugated microporous polymers (CMPs) etc., are considered good candidates for potential gas storage and gas separation applications. …
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Polymers from the natural product betulin : a microstructural investigation
… however, the starting substances for these polymers are of petrochemical origin, and the processes are all in all not sustainable. Moreover, the new polymers have challenged existing characterizing methodologies. These have to be further developed to address the upcoming demands of the novel …
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Mixed-gas Transport in Microporous Polymer Derivatives for Energy-Efficient Gas Separations
… address these polymer-specific disadvantages. Polymers of intrinsic microporosity (PIMs) were designed as ultrahigh-free-volume materials with inefficient chain packing and high surface areas, resulting in pure-gas performance beyond that of traditional glassy polymers. Hybrid systems such as …
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Leveraging Competitive Sorption in Microporous Polymer Membranes to Enhance Gas Separation Performance
… with a more permanent porosity (termed “microporous”) have gained attention due to their impressive combination of permeability (throughput) and permselectivity (separation efficiency) relative to the empirically defined “upper bound” for membrane materials. Traditionally, the …