Hydrophilic Polymers

Schmidt, Bernhard V. K. J.

doi:10.3390/polym11040693

Cited by 25 publications

(20 citation statements)

References 33 publications

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“…In this latter scenario, the breathability is attributed to the molecular absorption‐diffusion‐desorption mechanism, which in turn is driven by the temperature and humidity gradient 6–8 . Hydrophilic polymers generally possess polar groups such as hydroxyl (OH), amino (NH 2 ), carboxyl (COOH), or ether (O) linkages which can form hydrogen bonds with water 9,10 . Most commercial hydrophilic polymeric membranes or coatings are based on polyethylene oxide copolymers with ester, amide, or urethanes 3,11,12 .…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8] Hydrophilic polymers generally possess polar groups such as hydroxyl ( OH), amino ( NH 2 ), carboxyl ( COOH), or ether ( O ) linkages which can form hydrogen bonds with water. 9,10 Most commercial hydrophilic polymeric membranes or coatings are based on polyethylene oxide copolymers with ester, amide, or urethanes. 3,11,12 Among the class of hydrophilic nonporous breathable polymers, polyurethanes have been extensively explored due to the possibility of tuning the properties by varying the type of polyols, chain extender, the ratio of soft to hard segments, and so forth.…”

Section: Introductionmentioning

confidence: 99%

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Thermally stable poly(urethane‐imide)s with enhanced hydrophilicity for waterproof‐breathable textile coatings

Meena

Kerketta

Tripathi

et al. 2022

J of Applied Polymer Sci

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Thermally stable, waterproof, hydrophilic, breathable poly(urethane‐imide) (PUI) films were prepared as a potential replacement for the existing polyurethanes (PU) with a lower degree of thermal stability for waterproof breathable clothing. Hydrophilic PUI films were prepared by reacting 4,4′‐ diphenylmethane diisocyanate (MDI), polyethylene glycol (PEG‐1500), and pyromellitic dianhydride (PMDA), with increasing hard segment (46%–61%) and compared with polyurethane films with similar PEG content. The breathability of PUI film is significantly higher than the PU film (~20%). Interestingly, despite the high degree of water sorption, the PUI films exhibited higher waterproofness (~85%) than the PU, which has been attributed to the presence of imide functionalities. The thermal stability of PUI was higher (Tmax1 ~ 420°C, Tmax2 ~ 600°C and char yield 21%) than the analogous PU (Tmax1 ~ 360°C, Tmax2 ~ 420°C, and char yield 6%). The waterproofness, water contact angle, and glass transition temperature are found to increase with increasing imide content, while the water sorption capacity and breathability decrease. The developed PUI coated fabric withstood hydrostatic pressure of ~3000 mbar, with a WVTR of 1200 g m−2 24 h−1, bestowing it excellent candidature as a waterproof breathable fabric.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermally stable poly(urethane‐imide)s with enhanced hydrophilicity for waterproof‐breathable textile coatings

Meena

Kerketta

Tripathi

et al. 2022

J of Applied Polymer Sci

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“…Hydrophilic polymers are often used for hydrogel synthesis due to their biocompatibility [21,22] in aqueous environments [23] and mostly due to their loading drug potential [24].…”

Section: Hydrogel Synthesis Methodsmentioning

confidence: 99%

Hydrogels Based Drug Delivery Synthesis, Characterization and Administration

et al. 2019

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Hydrogels represent 3D polymeric networks specially designed for various medical applications. Due to their porous structure, they are able to swollen and to entrap large amounts of therapeutic agents and other molecules. In addition, their biocompatibility and biodegradability properties, together with a controlled release profile, make hydrogels a potential drug delivery system. In vivo studies have demonstrated their effectiveness as curing platforms for various diseases and affections. In addition, the results of the clinical trials are very encouraging and promising for the use of hydrogels as future target therapy strategies.

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“…Hydrogels are composed of hydrophilic polymers, which are desirable materials in polymer science. They have different properties that make them potentially useful in a wide variety of applications, such as in biomedical applications, self-assembly, or catalysis [ 15 ]. Hydrophilic polymers might be considered as those polymers that contain polar functional groups such as hydroxyl (-OH), carboxyl (-COOH), and amino (-NH 2 ) groups that make them soluble or swelled by water.…”

Section: Introductionmentioning

confidence: 99%

Hydrogels Classification According to the Physical or Chemical Interactions and as Stimuli-Sensitive Materials

Bustamante-Torres

Romero-Fierro

Arcentales-Vera

et al. 2021

Gels

144

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Hydrogels are attractive biomaterials with favorable characteristics due to their water uptake capacity. However, hydrogel properties are determined by the cross-linking degree and nature, the tacticity, and the crystallinity of the polymer. These biomaterials can be sorted out according to the internal structure and by their response to external factors. In this case, the internal interaction can be reversible when the internal chains are led by physicochemical interactions. These physical hydrogels can be synthesized through several techniques such as crystallization, amphiphilic copolymers, charge interactions, hydrogen bonds, stereo-complexing, and protein interactions. In contrast, the internal interaction can be irreversible through covalent cross-linking. Synthesized hydrogels by chemical interactions present a high cross-linking density and are employed using graft copolymerization, reactive functional groups, and enzymatic methods. Moreover, specific smart hydrogels have also been denoted by their external response, pH, temperature, electric, light, and enzyme. This review deeply details the type of hydrogel, either the internal structure or the external response. Furthermore, we detail some of the main applications of these hydrogels in the biomedicine field, such as drug delivery systems, scaffolds for tissue engineering, actuators, biosensors, and many other applications.

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Hydrophilic Polymers

Abstract: Hydrophilic polymers are a major area of polymer research with prominent fields of application, e [...]

Cited by 25 publications

References 33 publications

Thermally stable poly(urethane‐imide)s with enhanced hydrophilicity for waterproof‐breathable textile coatings

Thermally stable poly(urethane‐imide)s with enhanced hydrophilicity for waterproof‐breathable textile coatings

Hydrogels Based Drug Delivery Synthesis, Characterization and Administration

Hydrogels Classification According to the Physical or Chemical Interactions and as Stimuli-Sensitive Materials

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