Preparation of poly(AAm-co-HEMA)/ZnO nanocomposites via in situ polymerization/hydrothermal method and determination of their properties

Erol, İbrahi̇m; Aksu, Mecit; Gürler, Zeki

doi:10.1007/s00289-022-04343-7

Cited by 3 publications

(4 citation statements)

References 55 publications

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“…Also, the effect of high temperature and pressure in the hydrothermal method caused ZnO nanoparticles to show a more regular distribution on the matrix surface. Similar results have been seen in some recent studies [38][39][40]. SEM-EDX analyzes of poly(HEMA-co-FAOEME) and nanocomposites are presented in Fig.…”

Section: Sem and Edx Analysissupporting

confidence: 90%

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ZnO-containing nanocomposites produced from Mentha pulegium L. of a new HEMA-based methacrylate copolymer: improvement the thermal and antimicrobial effect

et al. 2023

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In this study, firstly, (2-oxo-2-(3,4,5-trifluoroanilino)-ethyl-2-methylprop-2-enoate) FAOEME, a methacrylate monomer with arylamide side group containing three fluorine atoms in the side branch, was synthesized. Poly(HEMA-co-FAOEME) was obtained due to radical copolymerization of FAOEME with 2-hydroxyethyl methacrylate (HEMA). Structural characterization of its copolymer with FAOEME and HEMA was performed by spectroscopy methods such as FTIR, 1 H, and 13 C-NMR. Biosynthesis of ZnO nanoparticles was carried out using Mentha Plegium L. extract. Three nanocomposites of poly(HEMA-co-FAOEME) containing biosynthesized ZnO nanoparticles were produced by hydrothermal technique, which is an environmentally friendly method. The formation of Poly(HEMA-co-FAOEME)/ZnO nanocomposites and the structural changes of the components was elucidated by SEM, XRD, and FTIR techniques. The effect of ZnO nanoparticles on the thermal properties of Poly(HEMA-co-FAOEME) was investigated by TGA and DSC techniques. The results showed that ZnO nanoparticles significantly increased the thermal stability and glass transition temperature (Tg) of the matrix (poly(HEMA-co-FAOEME). The antimicrobial properties of the materials were determined by the disk diffusion method using five different bacteria and one yeast cell. It was observed that the nanocomposites showed activity against all pathogens except one bacterial species, and the source of the activity was ZnO nanoparticles.

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Section: Sem and Edx Analysissupporting

confidence: 90%

“…There are many studies showing that the Tg values of nanocomposites increase due to the H bond [38][39][40]45].…”

Section: Fig 8 Dsc Curve Of Poly(hema-co-faoeme) and Nanocompositesmentioning

confidence: 99%

ZnO-containing nanocomposites produced from Mentha pulegium L. of a new HEMA-based methacrylate copolymer: improvement the thermal and antimicrobial effect

et al. 2023

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“…poly(AAm-co-HEMA) was prepared as hydrogel by using hydrothermal technique. The synthesis procedure of poly(AAm-co-HEMA)-ZnO nanocomposite is detaily given in Ref [17]. Al with 99 percent/% purity was coated by thermal evaporation on back side of p-Si wafers (ohmic contact).…”

Section: Methodsmentioning

confidence: 99%

poly(acrylamide-co-2-hydroxyethyl methacrylate: Biocompatible ZnO nanocomposites based electrooptic devices for photonic applications

Soylu

2022

Preprint

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poly(AAm-co-HEMA)-ZnO is synthesised by hydrothermal method. poly(AAm-co-HEMA)-ZnO nanocomposite is coated by the drop casting technique on p-Si substrate. The current-voltage (I–V) measurements of Al/poly(AAm-co-HEMA)-ZnO/p-Si heterojunction diodes with (a) 1%, (b) 3% and (c) 5% ZnO are carried out in the dark and illumination intensities of 20–100 mW/cm2 with 20 mW/cm2 steps. It is seen that the optimized or high rectification ratio is possible to obtain in metal/p-Si contacts by suitably choosing ZnO rate in poly(AAm-co-HEMA)-ZnO nanocomposite. The I-V characteristics show exactly the characteristic feature of a photodiode. It is seen that the detectivity (D) and photosensitivity (PS) are more efficient than that of the structure formed without any of the components of nanocomposite. The interface state density (Dit) varies depending on the amount of ZnO in poly(AAm-co-HEMA). Results show that poly(AAm-co-HEMA)-ZnO can be employed in the design of optoelectronic devices, as well as biomedical applications as biomaterial.

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“…The main characteristic of HEMA cryogels as adsorbents is that their reactivity is related to the hydroxylic pendant groups that promote H bonds with specific water pollutants, sequestering them [ 4 , 23 ]. Hydroxyl groups can also link semiconductor nanoparticles to the bulk structure for photocatalytic/catalytic applications [ 24 ]. Alternately, hydroxyls can be functionalized to anchor hydrophobic groups (e.g., cyclodextrins) for drug release [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

How the Crosslinker Amount Influences the Final Properties of Hydroxyethyl Methacrylate Cryogels

Proietto Salanitri,

Luzzi,

Caretti

et al. 2024

Gels

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The investigation of the mechanical, thermal, and adsorption properties of hydroxyethyl methacrylate (HEMA) cryogels as a function of a reactant ratio is herein reported to better address materials for specific applications. To this aim, cryogels have been synthesized using different monomer/crosslinker (N,N′-methylene-bisacrylamide–MBAA) ratios. The study of SEM images made it possible to identify the trend in the material’s macroporosity. As would be expected, the average measured pore width decreased as the amount of MBAA increased while the number of pores grew. Swelling capacity ranges from 8.7 gW/ggel (grams of water per gram of gel) to 9.3 gW/ggel. These values are strictly connected with the pore’s size and distribution, revealing that the water uptake for the most crosslinked sample is inferior to other samples. The equilibrium-adsorption capacity (Qe) towards the methylene violet (MV) was also assessed, revealing no remarkable differences after 24 h of a batch test. As expected, thermogravimetric analysis (TGA) also showed no significant changes in stability that ranged from a maximum weight loss temperature (T Max) of 420 °C to 425 °C, which increased as a function of crosslinker content. Conversely, compression strength measurements showed a notable difference of about 50% in modulus (Ec), moving from the higher to the lower HEMA/MBAA ratio. These new comparative results indicate how slight variations in the reactant’s ratio can steadily improve the mechanical properties of the HEMA cryogel without affecting its adsorption efficiency. This can be helpful in the design of materials for water and energy purposes. Since swelling properties are needed in the case of biomedical applications, the HEMA/MBAA ratio should be tuned versus high values.

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Preparation of poly(AAm-co-HEMA)/ZnO nanocomposites via in situ polymerization/hydrothermal method and determination of their properties

Cited by 3 publications

References 55 publications

ZnO-containing nanocomposites produced from Mentha pulegium L. of a new HEMA-based methacrylate copolymer: improvement the thermal and antimicrobial effect

ZnO-containing nanocomposites produced from Mentha pulegium L. of a new HEMA-based methacrylate copolymer: improvement the thermal and antimicrobial effect

poly(acrylamide-co-2-hydroxyethyl methacrylate: Biocompatible ZnO nanocomposites based electrooptic devices for photonic applications

How the Crosslinker Amount Influences the Final Properties of Hydroxyethyl Methacrylate Cryogels

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