The high temperature hydrolysis of polyacrynonitrile

Zil'berman, Ye.N.; Starkov, A.A; Pomerantseva, E.G.

doi:10.1016/0032-3950(77)90215-5

Cited by 5 publications

(3 citation statements)

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“…FTIR spectra indicate that the PAN substrate was functionalized successfully with TA molecules under these conditions, thus providing an additional route for the carboxylic functionalization (Figure S4). For MIL-47-sub samples, the substrate color was whitish for reactions up to 10 min, while for longer syntheses and for the control experiment the color was red to brown, indicating for these latter cases the formation of conjugated compounds, possibly azopolyenes, , in the substrate bulk.…”

Section: Resultsmentioning

confidence: 94%

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Growth of Metal−Organic Frameworks on Polymer Surfaces

et al. 2010

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Polymer substrates have been functionalized with a MOF material (MIL-47) synthesized directly on polyacrylonitrile using in situ microwave irradiation. The growth of MIL-47 on these substrates was studied as a function of microwave irradiation time using scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The conversion of nitrile to carboxylic acid groups on the PAN surface was necessary for the growth of MIL-47 on the substrate. MIL-47 crystals grew over time at the expense of a related disordered precursor phase, which lacks the long-range order of MIL-47. This work paves the way for the development of a new class of hybrid MOF-polymer materials that will extend the applications of MOFs to fields such as membrane separations, filtration, and protective textiles.

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Section: Resultsmentioning

confidence: 94%

“…Under the reaction conditions described above (water, 200 °C, pH = 1), PAN undergoes acid hydrolysis on the surface to give poly(acrylic acid), , and cross-linking in the bulk . The carboxylic acid-functionalized PAN substrate shares the carboxylic functionality of the organic building block in MIL-47 and allows the material to grow.…”

Section: Resultsmentioning

confidence: 99%

Growth of Metal−Organic Frameworks on Polymer Surfaces

et al. 2010

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“…Similarly, neutral hydrolysis of nitrile groups in polymers using water in absence of acid or base at a temperature of 180–210°C is also described. However, high temperature condition usually causes polymer degradation and decrease in molecular weight …”

Section: Nitrile Group Modifications In Polymersmentioning

confidence: 99%

An overview of synthetic modification of nitrile group in polymers and applications

Sruthi

Anas

2020

Journal of Polymer Science

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The physicochemical properties of polymers are mainly dependent on the nature of polymer backbone and/or pendant groups linked to the main chain. Therefore, synthetic modification of these functional groups via post functionalization is an important approach for obtaining novel polymeric systems with improved properties and targeted applications. In this context, the synthetic modifications of nitrile group in polymers into various useful functionalities have received considerable attention and several interesting applications of the resulting polymers have been identified. The majority of the studies are based on Polyacrylonitrile (PAN), and some isolated examples of nitrile functionalization in copolymers such as Poly (Styrene-co-Acrylonitrile) (SAN), Poly (Acrylonitrile-co-Butadiene-co-Styrene (ABS) and Nitrile Rubber (NBR) are available. These synthetic modifications are mainly accomplished by the reactions such as Nucleophilic addition, cycloaddition, reduction, and hydrolysis using various reagents. These studies describing the post-polymerization modifications of nitrile group in polymers reported during the last three decades are covered in this review.

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Homogeneous hydrolysis of polyacrylonitrile by potassium hydroxide

Şanlı

1990

European Polymer Journal

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The high temperature hydrolysis of polyacrynonitrile

Cited by 5 publications

References 1 publication

Growth of Metal−Organic Frameworks on Polymer Surfaces

Growth of Metal−Organic Frameworks on Polymer Surfaces

An overview of synthetic modification of nitrile group in polymers and applications

Homogeneous hydrolysis of polyacrylonitrile by potassium hydroxide

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