Imide-Based Polymers of Intrinsic Microporosity: Probing the Microstructure in Relation to CO₂ Sorption Characteristics

Abstract

A range of microporous, imide-based polymers were newly synthesized using two-step poly-condensation reactions of bis(carboxylic anhydride) and various aromatic diamines for CO 2 gas capture and storage applications. In this report, we attempted to assess the relative significance of molecular structural aspects through the manipulation of the conformational characteristics of the building blocks of the polymeric structures, the spiro-containing acid anhydride and the aromatic amines, to induce greater intrinsic microporosity and higher surface areas for the resulting solids. Results obtained from this study were thus used to outline a working relationship between the structural diversity of the constructed porous solids and their performance as CO 2 sorbents.

Design and Development of Enhanced Antimicrobial Breathable Biodegradable Polymeric Films for Food Packaging Applications

“…While this work focused only on the development of porous biodegradable polymeric membrane for food packaging applications through extrinsic micro-porosity approach, using in situ intrinsic micro/nano-porosity through chemical synthesis methods was also considered [4]. Accordingly, contorted 5,5',6,6'-tetrahydroxy-3,3,3',3' tetramethyl-1,1'-spirobisindane monomer is currently being examined as a possible starting material in this approach to create polymeric membranes of intrinsic microporosity, as shown in Figure 7 [48].…”

“…MAP is used to preserve crops characterized with high respiration rates to increase fresh food preservation [4,5].…”

“…In this technique, packaging materials are provided with micro or macro perforates in order to regulate the gas transmission rates (GTRs). In fact, it was proven that micro-perforated films are able to achieve equilibrium concentrations of oxygen (O 2 ) and carbon dioxide (CO 2 ) gases inside the food packaging, which strongly affect several quality aspects of fresh food such as crispness, color, appearance, taste and sensory attributes [4]. This efficiency was demonstrated through several studies on different fresh products.…”

Facile synthesis of novel tough and highly flexible biodegradable membranes for water microfiltration

“…One of the most interesting candidates for this type of applications is poly(lactic acid) (PLA), a thermoplastic biodegradable polyester derived from renewable sources [19], and has shown great potential for water treatment applications. PLA is also strong, highly thermally stable with large Young's modulus as compared to other biopolymers.…”

Pd NP-Decorated N-Rich Porous Organic Polymer as an Efficient Catalyst for Upgradation of Biofuels

“…This has motivated the researchers to develop the next generation heterogeneous catalysts for successful hydrodeoxygenation of vanillin. Nitrogen-containing high-surface-area porous nanomaterials found to be a very effective support, where palladium can be grafted at the pore surfaces for these organic transformations. − Owing to their tremendous potential in catalysis, a wide range of porous organic polymers (POPs) including crystalline triazine-based frameworks, conjugated microporous polymers, microporous polymers, polymers of intrinsic microporosity, porous aromatic frameworks, etc. are intensively studied over the years.…”