Synthesis of highly sulfonated polystyrene-based block copolymers soluble in tetrahydrofuran

Janata, Miroslav; Kůdela, Vlastimil; Gromadzki, Daniel; Štěpánek, Petr; Nallet, Frédéric; Diat, Olivier; Vlček, Petr; Toman, Ludék

doi:10.1515/epoly.2006.6.1.702

Cited by 7 publications

(9 citation statements)

References 16 publications

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“…sulfonated poly(ether ether ketone) [5] or styrene sulfonic acid units [59,60], including radiation-induced grafting of styrene with subsequent sulfonation [61][62][63]. However, while sulfonation of styrene [60,64] is a well-known approach, the degree of sulfonation is not quantitative, and (co)polymerization of styrene sulfonic acid (SSA) or its salts or esters, followed by deprotection is therefore often preferred. Indeed, neopentyl styrene sulfonate (NeoSS), appears as one of the more favored and useful SSA derivatives, as the use of organic protecting groups also allows for a wide range of polymerization techniques and solvents, as well as copolymerization with hydrophobic monomers.…”

mentioning

confidence: 99%

Mn2(CO)10-photomediated synthesis of poly(vinylidene fluoride)-b-poly(styrene sulfonate)

Černoch

Petrova

Černochová

et al. 2015

European Polymer Journal

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confidence: 99%

Mn2(CO)10-photomediated synthesis of poly(vinylidene fluoride)-b-poly(styrene sulfonate)

Černoch

Petrova

Černochová

et al. 2015

European Polymer Journal

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“…15 Among different sulfonating agents, acetyl sulfate is slightly less reactive and has a lower effect on polymer degradation with a lower probability of crosslinking. 44 This reagent can be prepared prior to the sulfonation by mixing sulfuric acid with acetic anhydride at a temperature below 10 C. 42 The schematic of the acetyl sulfate preparation reaction and sulfonation of PS is illustrated in Figure 1. 44 The chemical structure of SPS was investigated qualitatively using the FTIR analysis to evaluate the existence of sulfonic acid groups and the successful sulfonation process.…”

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confidence: 99%

Nanocomposite proton conducting membranes based on sulfonated polystyrene/imidazole‐2‐acetic acid blend for direct methanol fuel cell application

Arab,

Tohidian,

Shamsabadi

2023

J of Applied Polymer Sci

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Nanocomposite polyelectrolyte membranes based on sulfonated polystyrene (SPS) /imidazole‐2‐acetic acid (Im) blend (SPSIm), incorporated with halloysite nanotubes (HNTs) were studied for direct methanol fuel cell (DMFC) applications. Firstly, PS was sulfonated at various degrees of sulfonation (DS), and the optimum DS was selected based on hydrolytic stability. Then, SPS was blended with Im as new proton conducting sites. In addition to increasing proton conductivity, methanol permeability decreased due to the attractive interaction between Im and SO3H groups in SPS. In the next step, to introduce tortuous diffusion pathways and hence decrease the methanol crossover, halloysite nanotubes were incorporated into the SPSIm matrix. The results show that the methanol permeability of the membrane incorporated with 1 wt% HNT (SPSIm/HNT) was around 0.527 × 10−7 cm2 s−1, which showed a significant decrease compared to SPS, causing an improvement in the membrane selectivity parameter in comparison to pristine SPS membrane. Furthermore, the thermal properties, ion exchange capacity (IEC), water uptake behavior, and performance of the membranes were evaluated. Based on the results, owing to the reduced methanol permeability, acceptable power density, ease of preparation, as well as low cost, SPSIm/HNT could be considered for DMFC applications.

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“…In the initial experiments, the sulfonation conditions were selected using HPPhNB as the substrate. Sulfonation reaction was carried out by propionic sulfate under homogeneous condition similar to that described for polystyrene in different chlorinated solvents [ 42 ]. Dichloromethane, chloroform and 1,2-dichloroethane were tested as solvents.…”

Section: Resultsmentioning

confidence: 99%

Ionomers Based on Addition and Ring Opening Metathesis Polymerized 5-phenyl-2-norbornene as a Membrane Material for Ionic Actuators

et al. 2022

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Two types of poly(5-phenyl-2-norbornene) were synthesized via ring opening metathesis and addition polymerization. The polymers sulfonation reaction under homogeneous conditions resulted in ionomer with high sulfonation degree up to 79% (IEC 3.36 meq/g). The prepared ionomer was characterized by DSC, GPC, 1H NMR and FT-IR. Polymers for electromechanical applications soluble in common polar organic solvents were obtained by replacing proton of sulfonic group with imidazolium and 1-methylimidazlium. Membranes were prepared using the above-mentioned polymers and 1-ethyl-3-methylimidazolium tetrafluoroborate (EMImBF4), as well as mixtures with polyvinylidene fluoride (PVDF). Mechanical, morphological, and conductive properties of the membranes were examined by tensile testing, SEM, and impedance spectroscopy, respectively. Dry and air-stable actuators with electrodes based on SWCNT were fabricated via hot-pressing. Actuators with membranes based on methylimidazolium containing ionomers outperformed classical bucky gel actuator and demonstrated high strain (up to 1.14%) and generated stress (up to 1.21 MPa) under low voltage of 2 V.

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Synthesis of highly sulfonated polystyrene-based block copolymers soluble in tetrahydrofuran

Cited by 7 publications

References 16 publications

Mn2(CO)10-photomediated synthesis of poly(vinylidene fluoride)-b-poly(styrene sulfonate)

Mn2(CO)10-photomediated synthesis of poly(vinylidene fluoride)-b-poly(styrene sulfonate)

Nanocomposite proton conducting membranes based on sulfonated polystyrene/imidazole‐2‐acetic acid blend for direct methanol fuel cell application

Ionomers Based on Addition and Ring Opening Metathesis Polymerized 5-phenyl-2-norbornene as a Membrane Material for Ionic Actuators

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