Thermal crosslinking of polyimides and polysulfone using 3,3‐dimethyl‐1‐phenyltriazene compounds

Lau, Aldrich N. K.; Moore, S. S.; Vo, Lanchi

doi:10.1002/pola.1993.080310434

Cited by 10 publications

(3 citation statements)

References 16 publications

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“…Ladder structures, commonly used for high thermal stability applications, must be avoided to obtain a sufficiently low T g . The route we have chosen is to combine the high thermal stability of polyaryletherketones (PAEKs) 26 with phenylethynyl‐based crosslink chemistry27–35 (Fig. 3).…”

Section: Resultsmentioning

confidence: 99%

The effect of vitamin D supplementation on peripheral regulatory T cells and β cell function in healthy humans: a randomized controlled trial

Bock

Prietl

Mader

et al. 2011

Diabetes Metabolism Res

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Section: Resultsmentioning

confidence: 99%

The effect of vitamin D supplementation on peripheral regulatory T cells and β cell function in healthy humans: a randomized controlled trial

Bock

Prietl

Mader

et al. 2011

Diabetes Metabolism Res

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“…Ladder structures, commonly used for high thermal stability applications, must be avoided to obtain a sufficiently low T g . The route we have chosen is to combine the high thermal stability of polyaryletherketones (PAEKs) [26] with phenylethynyl-based crosslink chemistry [27][28][29][30][31][32][33][34][35] (Fig. 3).…”

Section: Resultsmentioning

confidence: 99%

Designing Polymers to Enable Nanoscale Thermomechanical Data Storage

Gotsmann

Knoll

Pratt

et al. 2010

Adv Funct Materials

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Nanomechanics has been slow in entering nanotechnology because of extreme conditions resulting from scaling. This is an issue in particular for polymers, although widely used in macroscale applications. Highly repetitive nanoscale deformation cycling in combination with excellent shape retention and thermal stability is demonstrated. While generic principles described are pertinent to a range of applications, this demonstration is made on the example of polymer media in high‐density data storage. The information, represented as indents, is written and erased using a heated tip. A high‐performance polymer with a flexible aryletherketone backbone is designed with phenylethynyl crosslink chemistry. After optimization of crosslink density and topology, unprecedented performance is achieved in all relevant metrics. Demonstrations of endurance and retention are performed at 1 Tb in−2 density, showing 108 write cycles using the same tip, 103 erase cycles and 3 × 105 read cycles of the media, and extrapolated to 10 years of retention at 85 °C.

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“…PiNFAs possess a gel content of >96% and are nearly unchanged with increasing binder concentration, far exceeding previous studies using cross-linked PI reactions. 31,48,49 This observation indicates the presence of highly cross-linked networks in aerogels. Figure 3b illustrates the verification of the physical structure.…”

Section: Formation and Characterization Of Pinfasmentioning

confidence: 80%

Cross-linked Polyimide Nanofibrous Aerogels with Hierarchical Cellular Structure for Thermal Insulation

Thi Khuat,

Doan,

Phong Vo

et al. 2023

ACS Appl. Polym. Mater.

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Due to their low bulk density, high porosity, and functional performance, aerogels are ideal candidates for a variety of applications. However, their potential application in a variety of fields is limited by their time-consuming and costly complex fabrication process. In this study, electrospun 3-aminopropyltriethoxysilane-grafted polyimide (PI@APTES) nanofibers were used to construct nanofibrous aerogels (NFAs) via freeze-drying a dispersion of cross-linked-PI short fibers and a binder (PI@APTES), resulting in improved properties and functionalities. A highly siloxane cross-linked network structure was formed by hydrolysis and condensation reactions to generate stable nanofibrous aerogels. The obtained polyimide nanofibrous aerogels (PiNFAs) had a hierarchically three-dimensional (3D) microporous structure, high porosity (over 98%), tunable densities (10.6 ± 0.7–13.6 ± 0.2 mg cm–3), solvent resistance, superhydrophobicity (water contact angle over 163°), low thermal conductivity (as low as 33.2 mW m–1 K–1), and mechanical stability. These PiNFAs are promising candidates for potential applications in thermal insulation, lightweight construction, filtration, and sensors.

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Thermal crosslinking of polyimides and polysulfone using 3,3‐dimethyl‐1‐phenyltriazene compounds

Cited by 10 publications

References 16 publications

The effect of vitamin D supplementation on peripheral regulatory T cells and β cell function in healthy humans: a randomized controlled trial

The effect of vitamin D supplementation on peripheral regulatory T cells and β cell function in healthy humans: a randomized controlled trial

Designing Polymers to Enable Nanoscale Thermomechanical Data Storage

Cross-linked Polyimide Nanofibrous Aerogels with Hierarchical Cellular Structure for Thermal Insulation

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