Recent Applications of Polyethylene Glycols (PEGs) and PEG Derivatives

Hutanu, Daniela; Frishberg, Mark D; Guo, Linjie; Darie, Costel C.

doi:10.4172/2329-6798.1000132

Cited by 109 publications

(75 citation statements)

References 65 publications

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“…PEO/PEG presents an inherent ability to attach a variety of reactive functional groups to their terminal sites, making them especially suitable as cross-linking agents or molecular spacers. For that reason the term PEGylation has been coined, referring to the covalent grafting of a PEG derivative onto molecules, improving the water solubility and biocompatibility, which is especially useful for drug development [113,114].…”

Section: Polyethylene Glycol (Peg) and Polyethylene Oxide (Peo)mentioning

confidence: 99%

Keratin Associations with Synthetic, Biosynthetic and Natural Polymers: An Extensive Review

Donato

Mija

2019

Polymers

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Among the biopolymers from animal sources, keratin is one the most abundant, with a major contribution from side stream products from cattle, ovine and poultry industry, offering many opportunities to produce cost-effective and sustainable advanced materials. Although many reviews have discussed the application of keratin in polymer-based biomaterials, little attention has been paid to its potential in association with other polymer matrices. Thus, herein, we present an extensive literature review summarizing keratin’s compatibility with other synthetic, biosynthetic and natural polymers, and its effect on the materials’ final properties in a myriad of applications. First, we revise the historical context of keratin use, describe its structure, chemical toolset and methods of extraction, overview and differentiate keratins obtained from different sources, highlight the main areas where keratin associations have been applied, and describe the possibilities offered by its chemical toolset. Finally, we contextualize keratin’s potential for addressing current issues in materials sciences, focusing on the effect of keratin when associated to other polymers’ matrices from biomedical to engineering applications, and beyond.

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Section: Polyethylene Glycol (Peg) and Polyethylene Oxide (Peo)mentioning

confidence: 99%

Keratin Associations with Synthetic, Biosynthetic and Natural Polymers: An Extensive Review

Donato

Mija

2019

Polymers

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“…Poly(ethylene glycol) (PEG) as a hydrophilic oligomer is characterized by the ease solubility in water and organic solvents, nontoxicity, nonantigenicity, biocompability, and a slow release for drugs . Therefore, it is extensively used as a good carrier polymer for drug delivery in medicine industry such as cancer‐drug delivery and target diagnostics …”

Section: Introductionmentioning

confidence: 99%

“…1 Therefore, it is extensively used as a good carrier polymer for drug delivery in medicine industry such as cancer-drug delivery and target diagnostics. 2 The kinetics and mechanisms of oxidation of natural polymers such as polysaccharides by the permanganate ion as a multivalent oxidant in both aqueous acidic 3 and alkaline 4 solutions was the subject of many investigators; a little attention has been paid to the oxidation of synthetic polymers such as poly(vinyl alcohol). 5 Indeed, the oxidation of PEG by the cerium(IV) ion as one-equivalent oxidant has been studied elsewhere.…”

Section: Introductionmentioning

confidence: 99%

Kinetics and mechanistic aspects on electron‐transfer process for permanganate oxidation of poly(ethylene glycol) in aqueous acidic solutions in the presence and absence of Ru(III) catalyst

Hassan

Sayed

2018

Int J of Chemical Kinetics

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The kinetics and mechanism of oxidation of poly(ethylene glycol) (PEG) by the permanganate ion as a multiequivalent oxidant in aqueous perchlorate solutions at an ionic strength of 2.0 mol dm−3 has been investigated spectrophotometrically. The reaction kinetics was found to be of complex in nature. The pseudo–first‐order plots showed curves of inverted S‐shape, consisting of two distinct stages throughout the entire course of reaction. The first stage was relatively slow, followed by a fast reaction rate at longer time periods. The first‐order dependence in [MnO4−], fractional first‐order dependence in [H+], and fractional first‐order kinetics in the PEG concentration for the first stage have been revealed in the absence of the Ru(III) catalyst. The influence of the Ru(III) catalyst on the oxidation kinetics has been examined. The oxidation was found to be catalyzed by the added Ru(III) catalyst. The First‐order dependence on the catalyst and zero order with respect to the oxidant concentrations have been observed. The kinetic parameters have been evaluated, and a tentative reaction mechanism consistent with the kinetic results is suggested and discussed.

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“…The addition of PEG was proven to create a remarkable porosity in immobilized TiO 2 sample [18]. It has been realized that the size of pores increased with increased molecular weight of PEG [19].…”

Section: Introductionmentioning

confidence: 99%

Immobilized TiO2-Polyethylene Glycol: Effects of Aeration and pH of Methylene Blue Dye

et al. 2017

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Abstract:Immobilized TiO 2 and immobilized TiO 2 -polyethylene glycol (TiO 2 /PEG) films have been prepared via brush coating method. The formulation of immobilized TiO 2 film was prepared by mixing distilled water with P25, while the formulation containing P25 combined with 8% PEG in distilled water was used in preparing immobilized TiO 2 /PEG. A double sided adhesive tape (DSAT) was stacked onto a glass surface prior to coating with the formulations and annealing by a thermal treatment at 100 • C for 15 min. The photocatalytic activity of immobilized photocatalysts was evaluated under photodegradation of methylene blue (MB). It was observed that immobilized TiO 2 /PEG has showed a higher rate of photocatalytic activity compared to immobilize TiO 2 . The X-ray photoelectron spectroscopy and Fourier transform infrared (FT-IR) spectra of immobilized TiO 2 /PEG sample proved that the existence of C=O led to enhanced photoactivity efficiency under normal light and visible light irradiations. The photocatalytic activity performance of immobilized TiO 2 /PEG was the highest at 75 mL·min −1 aeration rate and pH 11 of MB dye. The correlation between of all these parameters was investigated in this study.

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Recent Applications of Polyethylene Glycols (PEGs) and PEG Derivatives

Cited by 109 publications

References 65 publications

Keratin Associations with Synthetic, Biosynthetic and Natural Polymers: An Extensive Review

Keratin Associations with Synthetic, Biosynthetic and Natural Polymers: An Extensive Review

Kinetics and mechanistic aspects on electron‐transfer process for permanganate oxidation of poly(ethylene glycol) in aqueous acidic solutions in the presence and absence of Ru(III) catalyst

Immobilized TiO2-Polyethylene Glycol: Effects of Aeration and pH of Methylene Blue Dye

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