Preparation of polyacrylate/silica membranes for fuel cell application by in situ UV polymerization

Zhyhailo, Mariia; Yevchuk, Iryna; Yatsyshyn, М.; Korniy, S. А.; Demchyna, Oksana; Musiy, Rostyslav; Raudonis, Rimantas; Žarkov, Aleksej; Kareiva, Aivaras

doi:10.6001/chemija.v31i4.4321

Cited by 4 publications

(5 citation statements)

References 16 publications

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“…The synthesis of membranes was carried out according to the following procedure, similar to that in [8,9]: an aqueous solution containing water-soluble reagents (AA, SPAK and EGDA) was mixed with the corresponding amount of AN in which the photoinitiator was dissolved. The whole mixture was stirred on a magnetic stirrer for 35 min (500 rpm).…”

Section: Fig 1 Scheme Of Polymer Matrix Synthesismentioning

confidence: 99%

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Proton-conducting Organic-inorganic Sulfo-containing Membranes for Fuel Cell

Grigoravičiūtė-Puronienė

Yevchuk²,

Demchyna³

et al. 2022

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Cross-linked organiс-inorganic sulfo-containing membranes of various compositions based on acrylic monomers (acrylonitrile, acrylic acid, 3-sulfopropylacrylate potassium salt, ethylene glycol diacrylate) and sol-gel systems of tetraethoxysilane have been developed. Synthesis of the polymer matrix was carried out by UV-initiated polymerization of the monomer mixture and the inorganic component was formed in situ while conducting the sol-gel process of the precursor. FTIR, SEM, EDS, DMA, impedance spectroscopy were used to characterize the synthesized materials. The influence of inorganic component content on the properties of the membranes was investigated. DMA results show that an increase in silica content leads to a decrease in packing density and an increase in structural heterogeneity in sulfo-containing polyacrylate/silica membranes. The highest values of proton conductivity 1.12 ꞏ 10−2 Sm/cm at 60 °C were found in membranes containing 3 wt.%. of the added sol-gel system. Further increase of silica content does not increase the proton conductivity of the membranes. The proton transfer activation energies in the membranes were calculated from the temperature dependence of proton conductivity. The obtained cross-linked sulfo-containing organic-inorganic materials can be used for the development of proton-conducting membranes for fuel cells.

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Section: Fig 1 Scheme Of Polymer Matrix Synthesismentioning

confidence: 99%

“…An EDS confirmed the existence of silica in the hybrid membrane. A clear signal corresponding to silicon (Si) atom was present at 1.75 keV [9] in the EDS spectrum of hybrid membranes, whereas there was no signal in the pristine membrane (Fig. 4).…”

Section: Fig 2 Ir Spectra Of Membranesmentioning

confidence: 99%

Proton-conducting Organic-inorganic Sulfo-containing Membranes for Fuel Cell

Grigoravičiūtė-Puronienė

Yevchuk²,

Demchyna³

et al. 2022

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“…Radiation polymerization, as an environmentally friendly and efficient polymerization method, has garnered considerable interest. However, research on the polymerization of long‐chain acrylates with varying chain lengths using high‐energy radiation is still in its infancy, making it challenging to determine the degree of polymerization and crosslinking in the resulting products post‐irradiation 6–8 …”

Section: Introductionmentioning

confidence: 99%

“…However, research on the polymerization of long-chain acrylates with varying chain lengths using high-energy radiation is still in its infancy, making it challenging to determine the degree of polymerization and crosslinking in the resulting products postirradiation. [6][7][8] Terahertz (THz) is located between far infrared and microwave, and its frequency range is about 0.1-1.0 THz. The study of the optical properties of materials in the THz band using the THz-TDS technology is a heated topic in the THz research field.…”

Section: Introductionmentioning

confidence: 99%

Terahertz spectroscopy research on motion‐limited molecular chain of random polymethacrylate

Huang,

Yang,

2023

J of Applied Polymer Sci

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In this study, an innovative method was used to examine the impact of gamma‐ray irradiation on three specific monomers: methyl methacrylate (MMA), hexyl methacrylate (HMA), and lauryl methacrylate (LMA). The primary objective was to produce corresponding polymers—polymethyl methacrylate (PMMA), polyhexyl methacrylate (PHMA), and poly(lauryl methacrylate) (PLMA). The significance of the research was determined by conducting a thorough analysis of the thermal properties and structural characteristics of these polymers using advanced techniques, including thermogravimetric analysis and differential scanning calorimetry (TGA‐DSC), as well as Fourier transform infrared spectroscopy (FTIR). The results indicated that irradiation at a 30 kGy dose caused distinct decomposition of ester groups within the polymer matrices. Additionally, a clear trend was observed in the maximum exothermic temperature among the three polymers, with PMMA exhibiting the lowest temperature, followed by PLMA, and PHMA with the highest temperature. Surprisingly, when the radiation dose exceeded 30 kGy, PHMA's thermal stability peaked, demonstrating remarkable resistance to further changes. This highlights the crucial role of radiation dosage in adjusting polymer thermal properties. Furthermore, analysis of infrared characteristic peaks identified a critical radiation dose range between 15 and 30 kGy, where polymerization was efficiently promoted without generating extra by‐products, showcasing experimental ingenuity. Lastly, optical properties of the synthesized polymers were explored using THz time‐domain spectroscopy. Results showed intriguing changes in refractive indices following 30 kGy dose irradiation. Specifically, MMA and HMA exhibited moderate refractive index increases, while LMA displayed a significant decrease. Notably, PHMA demonstrated substantial absorption reduction beyond 15 kGy doses, with minimal further changes, highlighting the potential to customize polymer optical properties through controlled irradiation.

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“…In the last decade, due to the high rates of development of various industries, there is a need to obtain materials with the desired set of new operational properties. Therefore, the development of new hybrid organic-inorganic nanocomposites is a topical area of polymer chemistry [1][2][3][4][5][6][7][8][9][10][11][12]. In this case, the concept of "hybrid" emphasizes the chemical nature of the interaction of system components [13].…”

Section: Introductionmentioning

confidence: 99%

Effect of Poly(Titanium Oxide) on the Viscoelastic and Thermophysical Properties of Interpenetrating Polymer Networks

Tsebriienko

Попов

2021

Crystals

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The influence of poly(titanium oxide) obtained using the sol-gel method in 2-hydroxyethyl methacrylate medium on the viscoelastic and thermophysical properties of interpenetrating polymer networks (IPNs) based on cross-linked polyurethane (PU) and poly(hydroxyethyl methacrylate) (PHEMA) was studied. It was found that both the initial (IPNs) and organo-inorganic interpenetrating polymer networks (OI IPNs) have a two-phase structure by using methods of dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC). The differential scanning calorimetry methods and scanning electron microscopy (SEM) showed that the presence of poly(titanium oxide) increases the compatibility of the components of IPNs. It was found that an increase in poly(titanium oxide) content leads to a decrease in the intensity of the relaxation maximum for PHEMA phase and an increase in the effective crosslinking density due to the partial grafting of the inorganic component to acrylate. It was shown that the topology of poly(titanium oxide) structure has a significant effect on the relaxation behavior of OI IPNs samples. According to SEM, a uniform distribution of the inorganic component in the polymer matrix is observed without significant aggregation.

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Preparation of polyacrylate/silica membranes for fuel cell application by in situ UV polymerization

Cited by 4 publications

References 16 publications

Proton-conducting Organic-inorganic Sulfo-containing Membranes for Fuel Cell

Proton-conducting Organic-inorganic Sulfo-containing Membranes for Fuel Cell

Terahertz spectroscopy research on motion‐limited molecular chain of random polymethacrylate

Effect of Poly(Titanium Oxide) on the Viscoelastic and Thermophysical Properties of Interpenetrating Polymer Networks

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