Mechanically and Thermally Enhanced Intrinsically Dopable Polyimide Membrane with Advanced Gas Separation Capabilities

Weng, Chang-Jian; Jhuo, Yu-Sian; Huang, Kuan‐Yeh; Feng, Chunfang; Yeh, Jui‐Ming; Wei, Yen; Tsai, Mei‐Hui

doi:10.1021/ma201130s

Cited by 33 publications

(15 citation statements)

References 51 publications

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“…In order to obtain more excellent properties to meet the requirements in application fields, the properties of PI should be improved. 18,19 For example, the improvement of electrical conductivity could eliminate the damage of static electricity. And the enhancement of thermal conductivity could extend its working life at a relatively hyperthermic situation.…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of graphene oxide/polyimide composites by in situ polymerization and thermal imidization process

Wang

Dai

2016

High Performance Polymers

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Graphene oxide/polyimide (GO/PI) composites with different loadings of GO were prepared by in situ polymerization and solution blending method. By adding GO, the mechanical, electrical, and thermal properties of composites could be improved. The tensile strength of GO/PI composite with 3.0 wt% GO loading was up to 137.8 MPa, 75.5% higher than that of a pure PI. Besides, the electrical and the thermal conductivities increased with the increase of GO contents. An electrical conductivity value of 5.38 × 10−5 S m−1 and a thermal conductivity value of 0.10 W m−1 K−1 for GO/PI composites prepared via in situ polymerization at GO content of 3.0 wt% were achieved. The results indicated that in situ polymerization was able to make GO a better dispersion in the polymer matrix. Furthermore, the behavior of GO under the thermal imidization temperature was also discussed. The experimental results showed that GO could be partially reduced to graphene during the thermal curing process. Above works are conducive to the understanding of the effect and transformation of GO in the preparation process of graphene-based composites.

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Section: Introductionmentioning

confidence: 99%

Preparation and properties of graphene oxide/polyimide composites by in situ polymerization and thermal imidization process

Wang

Dai

2016

High Performance Polymers

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“…PANI is infusible and insoluble in conventional organic solvents and degraded at higher temperature [52,53]. Because of these reasons, PANI is treated as an intractable material.…”

Section: Principle Of Polyaniline Thermoset Blends and Composites Formentioning

confidence: 99%

A review of advances in the preparation and application of polyaniline based thermoset blends and composites

2020

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For several decades, forming blend and composite of polyaniline (PANI) with insulating polymers has been a widely studied research area because of the potential applications of such blends, which have a unique combination of mechanical properties, the processability of conventional polymers and the electrical property of conducting polymers. The current review paper will emphasize PANI composites or blends with thermosetting polymer matrices. The enhanced electro-mechanical properties of the blends and composites depend on the uniform dispersion of the PANI particle in polymer matrix. Therefore, considerable studies have focused on improving the distribution of PANI particles within the thermoset matrices. In this review paper, all the parameters and conditions that influence the surface morphology and application of PANI thermoset blends and composites will be described systematically. Recent progress on PANI based thermoset system with multifunctional ternary composites research will be highlighted in this paper. Furthermore, encouraging applications of different PANI thermoset composites and blends are discussed, such as flame-retardant materials, lightning damage suppression, metal ion removal, anticorrosive coating, electromagnetic shielding, conductive adhesives, and sensing materials.

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“…Based on its redox properties, EPI was used as a recognition element in the fabrication of electrochemical sensors [52][53][54][55] and as an anticorrosion material [56][57][58][59][60][61][62][63][64]. Based on its doping and dedoping capability, EPI was also explored as a gas separation membrane [65], and as a smart material characterized for its switchable superhydrophobicity [66]. There have also been papers that investigated means to improve EPI's mechanical strength [67,68] and thermal properties [69].…”

Section: Introductionmentioning

confidence: 99%

A Novel Application of Electroactive Polyimide Doped with Gold Nanoparticles: As a Chemiresistor Sensor for Hydrogen Sulfide Gas

2019

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This research paper presents a new application of electroactive polyimide doped with gold nanoparticles (PI/AuNPs) as a chemiresistor sensor for detecting hydrogen sulfide gas. The synthesis of PI/AuNPs was done in a simple 3-step process of polymerization using the as prepared amine-capped aniline trimer (ACAT), followed by imidization, and doping. Spectral analyses via FTIR, LC-MS and 1H-NMR confirmed the formation of amine-capped aniline trimer with a MW of 288 g mol−1. Comparison of ACAT, BSAA, and PI FTIR spectra showed successful polymerization of the last, while XRD validated the incorporation of metal nanoparticles onto the polymer matrix, showing characteristic diffraction peaks corresponding to gold. Furthermore, TEM, and FE-SEM revealed the presence of well-dispersed Au nanoparticles with an average diameter of about 60 nm. The electroactive PI/AuNPs-based sensor showed a sensitivity of 0.29% ppm−1 H2S at a linear concentration range of 50 to 300 ppm H2S (r = 0.9777). The theoretical limit of detection was found at 0.142 ppm or 142 ppb H2S gas. The sensor provided a stable response reading at an average response time of 43 ± 5 s, which was easily recovered after an average time of 99 ± 5 s. The sensor response was highly repeatable and reversible, with RSD values of 8.88%, and 8.60%, respectively. Compared with the performance of the conventional conducting polyaniline also doped with gold nanoparticles (PANI/AuNPs), the fabricated electroactive PI/AuNPs exhibited improved sensing performance making it a potential candidate in monitoring H2S in the environment and for work-related safety.

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Mechanically and Thermally Enhanced Intrinsically Dopable Polyimide Membrane with Advanced Gas Separation Capabilities

Cited by 33 publications

References 51 publications

Preparation and properties of graphene oxide/polyimide composites by in situ polymerization and thermal imidization process

Preparation and properties of graphene oxide/polyimide composites by in situ polymerization and thermal imidization process

A review of advances in the preparation and application of polyaniline based thermoset blends and composites

A Novel Application of Electroactive Polyimide Doped with Gold Nanoparticles: As a Chemiresistor Sensor for Hydrogen Sulfide Gas

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