Sulphonated poly-p-xylylene

Sochilin, V. A.; Pebalk, A. V.; Semenov, V. I.; Kardash, I. E.

doi:10.1016/0032-3950(91)90331-j

Cited by 5 publications

(5 citation statements)

References 8 publications

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“…The results, however, show discrepancies possibly due to high reaction rates or to differences in contact of the film samples with the internal reflection elements and thus could not be used for quantitative analysis. The degree of substitution, therefore, was estimated on the basis of the intensities of the signals characteristic of 1,4-disubstituted (1513 cm -1 ) and 1,2,4-trisubstituted (1419 cm -1 ) species by transmission IR . The degree of substitution was calculated according to A 1491 /( A 1513 + A 1491 ), where A 1491 and A 1513 represent the absorbance at the corresponding wavenumbers.…”

Section: Resultsmentioning

confidence: 99%

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Chemical Surface Modification of Poly(p-xylylene) Thin Films

Herrera‐Alonso

McCarthy

2004

Langmuir

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Electrophilic aromatic substitution reactions were studied at poly(p-xylylene) (PPX) film surface-reaction medium interfaces. The extent of the reactions (depth of penetration and degree of substitution) was determined by the interaction of the polymer with the reaction solution. Reaction with chlorosulfonic acid to produce sulfonyl chloride and sulfone functionalities occurred readily in the bulk of PPX, and yields were sensitive to time and temperature. Confinement of this reaction to the PPX surface was achieved by controlling the concentration of the acid. Functionalization of PPX with N-methylol-2-chloroacetamide in sulfuric acid to produce the chloroamidomethylated derivative occurred in high yield and was confined to the surface region of PPX. Hydrolysis of the amide to generate aminomethylated PPX was assessed by XPS and a derivatization reaction. Friedel-Crafts type chemistry (acylation and alkylation reactions) also produced functionalized surfaces, but with lower degrees of substitution than the other two reactions and was strictly surface-confined.

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Section: Resultsmentioning

confidence: 99%

“…At long reaction times and high temperatures, severe deformation and loss of transparency of the films occurrs. Coloration of the films also occurs at long reaction times and high temperatures and is likely a consequence of the formation of olefins 5 FESEM images of PPX before (a) and after (b) chlorosulfonation. …”

Section: Resultsmentioning

confidence: 99%

Chemical Surface Modification of Poly(p-xylylene) Thin Films

Herrera‐Alonso

McCarthy

2004

Langmuir

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“…The simplest and the most widely-used method for the synthesis of sulfonated ACPs involves sulfonation of different classes of polymers, such as substituted poly-(1,4-phenylenes) [34,35], poly-(p-xylylene [36,37]), poly-(1,4-oxyphenylenes) [38][39][40][41][42][43][44], poly(ether ether ketones) (PEEK) [46][47][48][49][50][51][52][53][54][55][56][57][58][59], polyarylene(ether sulfones) [3,[60][61][62][63][64][65][66][67][68][69][70][71][72][73][74], poly(phenylene sulfides) [75], polyphenylquinoxalines [76][77][78][79], polybenzimidazoles [80], polyperyleneimides [81] and some other ACPs. The chemical structures of sulfonated poly(4-phenoxybenzoyl-1,4-phenylene) (S-PPBP) (1), poly(p-xylylene) (S-PPX) (2), poly(phenylene sulfide) (S-PPS) (3)...…”

Section: Sulfonation Of High Molecular Mass Aromatic Condensation Polmentioning

confidence: 99%

Proton-Exchanging Electrolyte Membranes Based on Aromatic Condensation Polymers

Rusanov¹,

Likhatchev²,

Kostoglodov³

et al. 2005

Inorganic Polymeric Nanocomposites and Membranes

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“…The simplest and most widely used method for the synthesis of sulfonated ACPs involves sulfonation of different classes of polymers, such as poly(1,4-phenylenes), 31 ± 33 poly(p-xylylene), 34,35 poly(1,4-oxyphenylenes), 36 poly(ether ether ketones) (PEEK), 37 ± 44 poly(arylene ether sulfones), 3, 45 ± 52 poly(phenylene sulfides), 53 poly(phenylquinoxalines), 54 ± 56 poly(benzimidazoles) 57 and some other ACPs. The chemical structures of sulfonated poly(4-phenoxybenzoyl-1,4-phenylene…”

Section: Sulfonation Of High-molecular-mass Aromatic Condensation Pol...mentioning

confidence: 99%