Impact of metal cations on the thermal, mechanical, and rheological properties of telechelic sulfonated polyetherimides

Cao, Ke; Serrano, Joel M.; Liu, Tianyu; Stovall, Benjamin J.; Zhao-yu, XU; Arrington, Clay B.; Long, Timothy Edward; Odle, Roy; Liu, Guoliang

doi:10.1039/c9py00899c

Cited by 14 publications

(32 citation statements)

References 41 publications

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“…As previously mentioned, end-groups such as ureidopyrimidinone, 21 sulfonate salts, 22,23 and phosphonium salt 24,25 endow oligomers with outstanding thermal and mechanical properties, making them comparable to even benchmark PEIs. However, the solvent resistance remains similar to the pristine PEIs because these linkages are noncovalent.…”

Section: Crosslinkable End-groupmentioning

confidence: 98%

“…Based on this concept, low-molecular-weight PEI oligomers have recently been enhanced by hydrogen bonding 21 and ionic forces. [22][23][24][25]…”

Section: Oligomerization Compensated By Molecular Interactionsmentioning

confidence: 99%

“…After processing, the oligomers can be linked together via molecular interactions to enhance chain entanglement and compensate for thermal/mechanical performance loss. Based on this concept, low‐molecular‐weight PEI oligomers have recently been enhanced by hydrogen bonding 21 and ionic forces 22–25 …”

Section: Processability Improvementmentioning

confidence: 99%

“…To this point, two methods are presented for improving processibility, including polymer blending and oligomers engineering. [21][22][23][24][25] In light of the energy crisis and to advocate the goal of sustainable development by United Nations, 26 we dedicate a section that focuses on gas separation using HPPs, because efficient gas separation technology could immensely reduce human energy consumption and help lessen humanities global carbon footprint. With the goal of guiding further development, some critical challenges to the advancement of HPP technology are highlighted and discussed.…”

Section: Introductionmentioning

confidence: 99%

“…Even though well‐established, these HPPs still face challenges, like low processibility that increases production costs. To this point, two methods are presented for improving processibility, including polymer blending and oligomers engineering 21–25 . In light of the energy crisis and to advocate the goal of sustainable development by United Nations, 26 we dedicate a section that focuses on gas separation using HPPs, because efficient gas separation technology could immensely reduce human energy consumption and help lessen humanities global carbon footprint.…”

Section: Introductionmentioning

confidence: 99%

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Recent development of polyimides: Synthesis, processing, and application in gas separation

Zhao-yu

Croft

Guo

et al. 2021

Journal of Polymer Science

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High-performance polymers have been concomitant with advanced technology for half a century. With the advancement of synthetic chemistry, the recent development of high-performance polymers has provided superior properties and enabled wide applications. This article reviews recent research progress in aromatic high-performance polymers. Particularly, we focus on the synthesis and processing of polyimides, as well as the application in gas separation membranes. We begin with a brief introduction to highlight important history and physiochemical characteristics of polyimides. Then, we review the various synthesis methods, followed by recent advances for improving processability. Finally, we evaluate the use of high-performance polymers in gas separation membranes with focus given to the key issues of plasticization and aging. Overall, the information presented herein provides an up-to-date overview of high-performance polymers, polyimides particularly, and serves as a guide for further research involving the applications in membrane technologies.

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Section: Crosslinkable End-groupmentioning

confidence: 98%

“…Based on this concept, low-molecular-weight PEI oligomers have recently been enhanced by hydrogen bonding 21 and ionic forces. [22][23][24][25]…”

Section: Oligomerization Compensated By Molecular Interactionsmentioning

confidence: 99%

Section: Processability Improvementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Recent development of polyimides: Synthesis, processing, and application in gas separation

Zhao-yu

Croft

Guo

et al. 2021

Journal of Polymer Science

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Tailoring Charged Block Copolymer Architecture for Performance

White¹,

Liu²,

Drummey³

et al. 2022

Macromolecular Engineering

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Charged block copolymers (BCPs) find use in numerous applications spanning from gene delivery to electromechanical transducers. Recent advances in polymer synthesis have provided researchers with the necessary tools to study the properties of a wide variety of BCPs bearing cationic and anionic substituents. Controlling the architecture of these charged BCPs plays a key role in tailoring their performances in the desired application. Likewise, the polymer morphology significantly affects ion transport and thermomechanical properties of the charged BCP. This article aims to compare the structure–property relationships in charged BCPs across a variety of different polymer architectures including linear, branched, segmented, and multiply charged BCPs with a focus on tailoring properties for specific applications. Linear BCPs comprise of diblock, triblock, and multiblock copolymers. Diblocks frequently serve as micelles for drug delivery while triblocks, multiblocks, and segmented BCPs act as ion exchange membranes for transducers and fuel cells. The section on branched BCPs discusses polymer brushes, stars, micelles, and cross‐linked networks. The final section describes synthetic routes toward synthesizing multiply charged monomers and polymers while also emphasizing the challenges and benefits associated with these materials.

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Poly(ether imide)s with tailored end groups

Cao

Zhao-yu

Guo

et al. 2021

Journal of Polymer Science

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Poly(ether imide) (PEI) from polycondensation of 2,2‐bis[4‐(3,4‐dicarboxyphenoxy) phenyl] propane dianhydride (BPADA) and m‐phenylenediamine (mPD) is a type of high‐temperature engineering thermoplastics that have high glass transition temperature and outstanding mechanical properties. Owing to its wide use in many fields including automotive, aircraft, and electronics, the research of PEI has surged in the last few decades. As science and technology continue to progress rapidly, there is a growing demand for PEIs with better properties. Although a few approaches have successfully improved the properties of PEI, it is recognized that these approaches require complex procedures and are uneconomical. Contrastingly, end‐group modification of PEI is highly effective, simple, and economical. Over the last few years, our group has extensively studied the methods for improving the properties of PEI through end‐group modification. The end‐group moieties and polymer blocks introduce multiple hydrogen bonding, electrostatics, and microphase separation to PEI. In this article, we first classify the end groups based on their characteristics. Then, we compare their effects on the properties of PEIs, including thermal, rheological, mechanical, optical, flame‐retardant, and morphological, and discuss the roots of these effects. The in‐depth comparisons and discussion generate principles to guide the synthesis of PEIs with tailored properties by modifying the end groups. This timely article will provide insights into the synthesis of other novel high‐temperature polymers and entice endeavors to develop novel end groups.

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Impact of metal cations on the thermal, mechanical, and rheological properties of telechelic sulfonated polyetherimides

Abstract: The glass transition temperature, thermal degradation temperature, and complex viscosity of metal sulfonated polyetherimides decrease with an increase in metal cation size.

Cited by 14 publications

References 41 publications

Recent development of polyimides: Synthesis, processing, and application in gas separation

Recent development of polyimides: Synthesis, processing, and application in gas separation

Tailoring Charged Block Copolymer Architecture for Performance

Poly(ether imide)s with tailored end groups

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