The synthesis and proton-conducting properties of the copolymers based on 1-vinyl-1,2,4-triazole and 2-acrylamido-2-methyl-1-propanesulfonic acid

Celik, Sevim Uenueguer; Bozkurt, Ayhan

doi:10.1016/j.ssi.2010.02.019

Cited by 11 publications

(6 citation statements)

References 21 publications

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“…Vinyl-1,2,4-triazole has previously been used to make proton conducting polymer membranes through combining poly(vinyl-1,2,4-triazole) with other polymers, such as poly(vinylphosphonic acid) and poly(styrenesulfonic acid), or by adding in acids such as triflic acid, p -toluenesulfonic acid, nitrilotri(methyltriphosphonic acid), or phosphoric acid . Copolymers of poly(vinyl-1,2,4-triazole) have been reported with 2-acrylamido-2-methyl-1-propanesulfonic acid, vinylphosphonic acid, 1-vinyl-4,5,6,7-tetrahydroindole, , N -vinylcarbazole, and diisopropyl- p -vinylbenzyl phosphonate . However, none of these copolymers had the monomers present in an ionic form.…”

Section: Resultsmentioning

confidence: 99%

Copolyampholytes Produced from RAFT Polymerization of Protic Ionic Liquids

et al. 2017

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Polyampholytic copolymers have been synthesized via reversible addition−fragmentation chain transfer (RAFT) polymerization of protic ionic liquid monomers. The monomers were prepared by acid−base proton exchange between acid and basic precursor conjugates, each containing one or more vinyl pendant groups. The polymerization, which was carried out without additional solvents present, led to high molecular weight glassy polymers, which were stable in the form of bulk viscous liquid ionic complexes. Various polyampholytes belonging to both linear and cross-linked families were prepared by judiciously varying the molecular structure of the acid precursor. Furthermore, by using solid-state NMR, the molecular arrangement of the polymeric backbone was identified, highlighting the presence of copolymers with both random and alternating copolymer chains which in the latter case involves a regularly alternating acid monomer, whereas the base occurs as a random sequence with the average and most probable number of monomers dictated by the stoichiometry used. The structural and mechanical properties of the resulting copolyampholytes were characterized by atomic force microscopy, peak-force quantitative nanomechanical analysis, differential scanning calorimetry, and small-angle X-ray scattering. These showed that the final polymers were essentially glassy and amorphous, with weak compositional fluctuations of the order of a few monomers and Young moduli in the range 1−3 GPa.

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Section: Resultsmentioning

confidence: 99%

Copolyampholytes Produced from RAFT Polymerization of Protic Ionic Liquids

et al. 2017

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“…These copolymer membranes display high proton conductivity at elevated temperatures and in anhydrous conditions. There are a number of studies on the development of proton-conducting membranes based on 1-vinyl-1,2,4-triazole copolymers ( Table 3 ) [ 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 ].…”

Section: Proton-conducting Membranes Based On 1-vinyl-124-triazole Co...mentioning

confidence: 99%

“…The copolymers of 1-vinyl-1,2,4-triazole with 2-acrylamido-2-methyl-1-propanesulfonic acid are characterized by high thermal (up to 250 °C) and electrochemical (more than 3 V) stability, as well as a high proton conductivity of 2 × 10 −3 S/cm at 130 °C in the anhydrous state [ 74 ]. It has been established that proton conductivity in the copolymers is carried out according to the hopping mechanism due to structural diffusion [ 74 ].…”

Section: Proton-conducting Membranes Based On 1-vinyl-124-triazole Co...mentioning

confidence: 99%

Proton-Conducting Polymeric Membranes Based on 1,2,4-Triazole

Прозорова

Pozdnyakov

2023

Membranes

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In this review, a comparative analysis of the literature and our own results obtained in the study of the physicochemical, dielectric, and proton-conducting properties of composite polymer materials based on 1H-1,2,4-triazole has been carried out. It has been established that 1H-1,2,4-triazole and homopolymers and copolymers of 1-vinyl-1,2,4-triazole are promising for the development of proton-conducting fuel cell membranes. They significantly improve the basic characteristics of electrolyte membranes, increase their film-forming ability, increase thermal stability up to 300–330 °C, increase the electrochemical stability region up to 3–4 V, promote high mechanical strength and morphological stability of membranes, and provide high ionic conductivity (up to 10−3–10−1 S/cm) under anhydrous conditions at temperatures above 100 °C. There is also an improvement in the solubility and a decrease in the glass transition temperature of polymers based on 1-vinyl-1,2,4-triazole, which facilitates the processing and formation of membrane films. The results obtained demonstrate the uniqueness of 1H-1,2,4-triazole and (co)polymers based on 1-vinyl-1,2,4-triazole and the promise of their use for the creation of heat-resistant plastic and electrochemically stable, mechanically strong proton-conducting membranes with high ionic conductivity under anhydrous conditions and at high temperatures.

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“…Although these molecules can be intercalated into the polymer membrane, their leaching out problem lead the scientists to prepare matrices that have acid molecules or the heterocyclic compounds attached to the polymer backbone. One way to prepare this structure is to synthesize copolymers comprising both acid and heterocyclic molecules . Another route is blending acid functional polymers with azole containing polymers .…”

Section: Introductionmentioning

confidence: 99%

Novel composite polymer electrolyte membranes based on poly(vinyl phosphonic acid) and poly (5-(methacrylamido)tetrazole)

et al. 2014

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Heterocyclic molecules are generally used in the proton conducting membranes as dopant or polymer side group due to their high proton transfer ability. Composite proton conducting membranes based on poly(vinylphosphonic acid) (PVPA) and poly(5-(methacrylamido)tetrazole) (PMTet) were produced. The homopolymers, prepared from their corresponding monomers, were blended at several mol ratios to obtain the polymer electrolyte membranes. All samples were characterized by Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), thermogravimetric analysis (TGA), differantial scanning calorimetry (DSC), cyclic voltammetry (CV), and impedance analysis. Besides, the morphology of the membranes was studied by X-ray diffraction (XRD), atomic force microscopy (AFM) and scanning electron microscopy (SEM). FTIR spectra confirmed the formation of hydrogen bonding network between PVPA and PMTet units. TGA showed that the polymer electrolyte membranes were thermally stable up to 210 C. CV curves demonstrated the oxidative stability of the samples in 3 V region. In anhydrous conditions, the maximum proton conductivity was determined as 0.06 Scm 21 at 150 C for PMTetP(VPA) 4 . POLYM. ENG. SCI.,

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The synthesis and proton-conducting properties of the copolymers based on 1-vinyl-1,2,4-triazole and 2-acrylamido-2-methyl-1-propanesulfonic acid

Cited by 11 publications

References 21 publications

Copolyampholytes Produced from RAFT Polymerization of Protic Ionic Liquids

Copolyampholytes Produced from RAFT Polymerization of Protic Ionic Liquids

Proton-Conducting Polymeric Membranes Based on 1,2,4-Triazole

Novel composite polymer electrolyte membranes based on poly(vinyl phosphonic acid) and poly (5-(methacrylamido)tetrazole)

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