Cubic polyhedral oligomeric silsesquioxane nano-cross-linked hybrid hydrogels: Synthesis, characterization, swelling and dye adsorption properties

Eftekhari‐Sis, Bagher; Rahimkhoei, Vahid; Akbari, Ali; Araghi, Hessamaddin Younesi

doi:10.1016/j.reactfunctpolym.2018.05.002

Cited by 46 publications

(21 citation statements)

References 51 publications

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“…(b)) to 1000 Da (G3; Fig. (d)), the crosslink density decreased with decreased wall thickness of the pores in the hybrid hydrogel . The elemental composition of G3 hybrid hydrogel, measured using EDX, is shown in Fig.…”

Section: Resultsmentioning

confidence: 94%

“…Further to our previous interest in POSS chemistry, in the work reported here, for the first time water‐soluble OA‐POSS was used as a nano‐crosslinker for the synthesis of a water‐soluble PEG‐based carboxy‐functional polyester hydrogel. The polyester was synthesized by the reaction of PEG with anhydride‐functionalized ethylenediaminetetraacetic acid (EDTA) in a one‐step, solvent‐free polyaddition reaction.…”

Section: Introductionmentioning

confidence: 84%

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Synthesis of polyhedral oligomeric silsesquioxane nano‐crosslinked poly(ethylene glycol)‐based hybrid hydrogels for drug delivery and antibacterial activity

Arsalani

Kazeminava

Akbari

et al. 2018

Polymer International

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The synthesis is reported of novel hybrid hydrogels based on ethylenediaminetetraacetic acid dianhydride and poly(ethylene glycol) (PEG) with octa‐aminopropyl polyhedral oligomeric silsesquioxane hydrochloride salt (OA‐POSS) as a nano‐crosslinker under solvent‐free conditions. The molecular weight of PEG was varied between 600 and 1000 Da. The synthesized hydrogels were characterized using various techniques. Further, the swelling behavior and antibacterial activity of the hydrogels and release kinetics of metronidazole (MTZ) as a model drug from them were evaluated. Experimental results demonstrate that hydrogels with tunable properties can be synthesized by varying the PEG molecular weight and type of crosslinker (hybrid or organic). Among the synthesized hybrid hydrogels, that crosslinked by OA‐POSS with long PEG chains (1000 Da) showed the highest swelling degree (2000%), drug encapsulation efficiency (88%) and extent of MTZ release (96%). © 2018 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 84%

Synthesis of polyhedral oligomeric silsesquioxane nano‐crosslinked poly(ethylene glycol)‐based hybrid hydrogels for drug delivery and antibacterial activity

Arsalani

Kazeminava

Akbari

et al. 2018

Polymer International

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“…140 For example, the XRD patterns in Figure 10(a) showed a successful hybridization and a uniform dispersion of the cross-linker as confirmed by the disappearance of characteristic crystalline diffraction peaks of OV-POSS at 2θ = 9.8, 23.1 and 23.9°. 140 The TGA thermogram (Figure 10(b)) showed that the crosslinking with POSS in the hybrid hydrogels increased the thermal stability, wherein the weight loss at temperatures 340-500°C was less than weight loss obtained for poly (NIPAM-co-IA) at the same temperature. 140 From the obtained literature, it could be observed that the chemical and physical properties of the hydrogels were improved, including creating porous structures that enable penetration of adsorbate molecules.…”

Section: Preparation Methodsmentioning

confidence: 86%

“…140 The TGA thermogram (Figure 10(b)) showed that the crosslinking with POSS in the hybrid hydrogels increased the thermal stability, wherein the weight loss at temperatures 340-500°C was less than weight loss obtained for poly (NIPAM-co-IA) at the same temperature. 140 From the obtained literature, it could be observed that the chemical and physical properties of the hydrogels were improved, including creating porous structures that enable penetration of adsorbate molecules.…”

Section: Preparation Methodsmentioning

confidence: 96%

Removal of methylene blue from wastewater using hydrogel nanocomposites: A review

Malatji

Makhado

Modibane

et al. 2021

Nanomaterials and Nanotechnology

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Water pollution by organic dyes continues to pose a serious health and environmental threat to the ecosystem. Although adsorption using biopolymer-based hydrogels has proven to be an ideal technique for the treatment of these dye contaminants from aqueous solutions, these hydrogels suffer from lack of mechanical stability and recovery as compared to synthetic polymers. Herein, we review the low-cost synthesis of hydrogel incorporated with inorganic components mainly focusing on strategies to improve the mechanical stability and separation of the hydrogel in removing methylene blue (MB) dye from aqueous solution. The literature shows that hydrogel nanocomposites are a class of materials that have flourished significant consideration, especially concerning water treatment. In adsorption technology, hydrogel nanocomposites act as absorbents, prominent to enhance their removal efficiency towards contaminants. This review highlights the preparation and use of hydrogel nanocomposites as efficient adsorbents. In-depth discussions on adsorption and diverse synthetic routes of hydrogels have been devoted to applications of these nanocomposites and are compared in this contribution to the removal efficiency of MB dye from wastewater.

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“…Therefore, the hybrid coating required more energy to promote the cured completion. This makes it difficult for the hybrid film to transit from the glassy state to the rubbery state, eventually leading to an increase in Tg [27]. Runs Figure 3 and Table 4 demonstrate that the thermal stability of the hybrid coatings was improved by the addition of nanoparticles.…”

Section: Dynamic-mechanical Characterizationmentioning

confidence: 99%

Preparation and Properties of High Hardness Ultraviolet Curable Polyethylene Terephthalates Surface Coatings Modified with Octavinyl-Polyhedral Oligomeric Silsesquioxane

Kang

Tang

2018

Coatings

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Using organic coatings helps to protect PET (polyethylene terephthalates) surfaces, improve surface hardness, scratch resistance, and solvent resistance, prolong the service life of PET film, and to expand their scope of applications. There were some disadvantages, including poor flexibility and impact resistance in high-hardness coatings; organic coatings should also be modified to improve the toughness. Herein, a UV (ultraviolet curing) curable high-hardness organic coating used in PET surface protection was prepared and modified with inorganic nanoparticles, such as OVPOSS (octavinyl-polyhedral oligomeric silsesquioxane). The effects of the categories of nanoparticles on the coating performance were studied. UV-Vis spectra (ultraviolet visible light spectra), FT-IR (Fourier transform infrared spectrometer), TGA (thermogravimetric analysis), DMA (dynamic-mechanical), SEM (field emission scanning electron microscope), and AFM (atomic force microscope) were used to characterize the properties of the coatings. The results showed that the addition of eight-vinyl POSS to the organic coating significantly increased its glass transition temperature (Tg) from 100 to 120 °C, improved its storage modulus from 167.6 MPa to 258.9 MPa, and raised its impact resistance and flexibility. The SEM and AFM images displayed that the eight-vinyl POSS particles were dispersed homogeneously in the coating, arranged in an ordered network, and had good compatibility with organic components. The film displayed excellent properties, including 4 H of the pencil hardness, 100 g cm of impact resistance, excellent flexibility, and 90% of light transmittance, with the addition of 0.3 wt % OVPOSS. TGA analysis revealed that the coating had good thermal stability, with 5% weight loss temperature up to 335 °C.

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Cubic polyhedral oligomeric silsesquioxane nano-cross-linked hybrid hydrogels: Synthesis, characterization, swelling and dye adsorption properties

Cited by 46 publications

References 51 publications

Synthesis of polyhedral oligomeric silsesquioxane nano‐crosslinked poly(ethylene glycol)‐based hybrid hydrogels for drug delivery and antibacterial activity

Synthesis of polyhedral oligomeric silsesquioxane nano‐crosslinked poly(ethylene glycol)‐based hybrid hydrogels for drug delivery and antibacterial activity

Removal of methylene blue from wastewater using hydrogel nanocomposites: A review

Preparation and Properties of High Hardness Ultraviolet Curable Polyethylene Terephthalates Surface Coatings Modified with Octavinyl-Polyhedral Oligomeric Silsesquioxane

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