Poly(maleic anhydride) cross-linked polyimide aerogels: synthesis and properties

Guo, Hongbo; Meador, Mary Ann B.; McCorkle, Linda; Scheiman, Daniel A.; McCrone, Jordan D.; Wilkewitz, Brittany Marie

doi:10.1039/c6ra01013j

Cited by 52 publications

(38 citation statements)

References 22 publications

(29 reference statements)

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“…As observed from Figure 5, all the samples presented the characteristic absorption bands for polyimides and imide groups, including 727 (cm −1 ) (CNC stretching vibration), [ 38 ] 1370 (cm −1 ) (imide CN), 1715 (cm −1 ) (symmetric imide CO) and 1775 (cm −1 ) (asymmetric imide CO). [ 42 ] All eight samples presented similar peaks, which was due to the close monomer content of the fabricated aerogels. However, when comparing the samples peaks, there was slight differences as well.…”

Section: Resultsmentioning

confidence: 80%

Double Dianhydride Backbone Polyimide Aerogels with Enhanced Thermal Insulation for High‐Temperature Applications

Mosanenzadeh

Alshrah

Saadatnia

et al. 2020

Macro Materials & Eng

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Aerogels owe their high thermal insulation and other unique properties to their nanostructure configuration. However, controlling the aerogels' morphology is always a scientific challenge. In this study, double dianhydride backbone (double backbone) polyimide aerogels with tailored nanostructure assembly are created for the first time. This is achieved by controlled polymerization reaction of oligomers with distinct dianhydride monomers. Combining the two oligomers through a controlled polymerization reaction is a successful strategy for tailoring the aerogels nanostructure assembly as well as other properties. The fabricated double backbone aerogel presents 40% reduced thermal conductivity of 19.7 mW mK−1 over previously studied polyimide aerogels along with the compression modulus of 1.64 MPa at a relatively low density of 0.068 g cm−3. Such low thermal conductivity is comparable with the inorganic counterparts. Light in weight and high thermally insulated polyimide aerogels with suitable mechanical properties and high service temperature are an appropriate replacement for current fireproof insulation materials.

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Section: Resultsmentioning

confidence: 80%

Double Dianhydride Backbone Polyimide Aerogels with Enhanced Thermal Insulation for High‐Temperature Applications

Mosanenzadeh

Alshrah

Saadatnia

et al. 2020

Macro Materials & Eng

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“…Various peaks are observed with respect to the variation of the wave number. Accordingly, the characteristic bonds of the polyimide such as 727 (cm −1 ), 1370 (cm −1 ) (imide C−N), 1715 (cm −1 ) (symmetric imide C=O) and 1775 (cm −1 ) (asymmetric imide C=O), are observed in the figure 43 . However, some picks are found around 1535 (cm −1 ) (amide C−N) and 1660 (cm −1 ) (amic acid C=O) bonds which can be attributed to the incomplete imidization of the samples.…”

Section: Introductionmentioning

confidence: 91%

A High Performance Triboelectric Nanogenerator Using Porous Polyimide Aerogel Film

Saadatnia

Mosanenzadeh

Esmailzadeh

et al. 2019

Sci Rep

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This paper presents a novel aerogel-based Triboelectric Nanogenerator (TENG) which shows a superior performance for energy harvesting and sensing applications. Polyimide-based aerogel film with varying open-cell content level is developed to be used as the main contact material for the TENG. The fabricated aerogel film is fully characterized to reveal the chemical and mechanical properties of the developed material. It is shown the use of Polyimide aerogel film remarkably enhances the performance of the TENG compared to a TENG with fully dense Polyimide layer with no porosity. This enhancement is due to the increase on the effective surface area, charge generation inside the open-cells of the aerogel, and increase on the relative capacitance of the TENG device. The effect of varying porosity from zero to 70% of open-cell content reveals that the aerogel film with 50% shows the highest performance where the peak open-circuit voltage of 40V and peak short-circuit current of 5 μA are obtained. These values are higher than those of the TENG with simple Polyimide layer with an order of magnitude. Finally, the performance of proposed TENG under resistive loads and capacitors are tested. Thus, this work presents an effective method for high performance TENG.

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“…The highly reactive -NH 2 group of APTES, which persists even after the treatment process on Al foil, provide chemically active sites for reaction with the MAH groups of MAH-g-EPDM rubbers. Many researchers have reported that strong imide bonds can be formed via ring-opening and cyclization reactions between amine and MAH groups [40][41][42][43][44][45][46]54,55]. Nuclear magnetic resonance and FT-IR analysis could be the most powerful tools for confirming the formation of imide bonds between APTES-treated Al foil and EPDM-B-15; however, these methods could not be employed in this study because of the low proportion of imide bonds within the CPP/EPDM-B-15/APTES-treated Al foil laminates.…”

Section: Surface Treatment Of Al Foil With Aptesmentioning

confidence: 99%

High-Performance Adhesives Based on Maleic Anhydride-g-EPDM Rubbers and Polybutene for Laminating Cast Polypropylene Film and Aluminum Foil

Lee

Yang²,

Park³

et al. 2019

Coatings

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The adhesion between aluminum (Al) foil and cast polypropylene (CPP) film laminated with mixtures of amorphous- and crystalline-maleic anhydride-grafted ethylene-propylene-diene monomer (MAH-g-EPDM) rubbers and highly reactive polybutene (HRPB) as the adhesives was investigated. Specifically, the HRPB was used as an adhesion promoter of the MAH-g-EPDM rubbers and CPP as well as a compatibilizer of two kinds of MAH-g-EPDM rubbers having limited miscibility. To introduce strong chemical bonds between the MAH-g-EPDM rubbers and Al foil, the surface of Al foil was treated with 3-aminopropyl triethoxysilane (APTES). The weak adhesion between Al foil and MAH-g-EPDM rubbers was improved by imidization between the amine groups (–NH2) of APTES and the maleic anhydride groups (MAH) of MAH-g-EPDM rubbers. The effects of the composition of adhesives, tempering time and adhesive thickness were also studied to optimize the adhesion of the CPP/Al foil laminates. We concluded that MAH-g-EPDM rubber based adhesives containing HRPB can be applied for the lamination of Al foil and CPP films to satisfy the requirements of high-performance packaging materials for various purposes.

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Poly(maleic anhydride) cross-linked polyimide aerogels: synthesis and properties

Abstract: A series of aerogels was fabricated by cross-linking amine end-capped polyimide oligomers with poly(maleic anhydride)s.

Cited by 52 publications

References 22 publications

Double Dianhydride Backbone Polyimide Aerogels with Enhanced Thermal Insulation for High‐Temperature Applications

Double Dianhydride Backbone Polyimide Aerogels with Enhanced Thermal Insulation for High‐Temperature Applications

A High Performance Triboelectric Nanogenerator Using Porous Polyimide Aerogel Film

High-Performance Adhesives Based on Maleic Anhydride-g-EPDM Rubbers and Polybutene for Laminating Cast Polypropylene Film and Aluminum Foil

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