Sustainable production of polyurethane from castor oil, functionalized with epoxy- and hydroxyl-terminated poly(dimethyl siloxane) for biomedical applications

Mathew, Aiswarea; Kurmvanshi, Surendra; Mohanty, Smita; Nayak, Sanjay K.

doi:10.1007/s10853-017-1757-3

Cited by 26 publications

(11 citation statements)

References 23 publications

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“…The reaction mixture was cooled in an ice bath and hardener, TETA was added to react with the remaining epoxy moieties. The detailed procedure for the siliconization of the epoxy‐terminated PUs were mentioned in the previous works . The resultant solution was transferred into the molds and cured at 70°C for 24 h to obtain the SNC sheet of 3‐mm thickness.…”

Section: Methodsmentioning

confidence: 92%

Preparation and characterization of siloxane modified: Epoxy terminated polyurethane‐silver nanocomposites

et al. 2017

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The effect of incorporation of silver nanoparticles (SNPs) in an organic–inorganic metal nanocomposite was investigated. A renewable resource‐based polyurethane (PU) was synthesized by an in situ polymerization method with a polyol: diisocyanate ratio of 1:1.2, an epoxy (glycidol) terminated polyurethane (PE) was prepared by a polyol: diisocyanate: glycidol ratio of 1:3:3, a hydroxy terminated poly (dimethyl siloxane) (HTPDMS) modified PE (PES) was synthesized by the incorporation of 10 wt.% of HTPDMS into the PE and a silver nanocomposite (SNC) was synthesized by the addition of 0.3 wt. % SNPs into the PES matrix. Fourier transform infrared spectroscopy analysis confirmed the existence of NHCOO, Si‐O‐Si and oxirane linkages. The structural analysis was carried by X‐ray diffraction analysis in order to verify the face centered cubic structure of SNPs. The differential scanning Calorimetry analysis and thermogravimetric analysis showed the improved thermal stability by the addition of thermally stable epoxy linkages, high energy siloxane linkages and SNPs. Thus an advanced composite material with desirable properties for industrial applications have been prepared in the current work. POLYM. COMPOS., 39:E2390–E2396, 2018. © 2017 Society of Plastics Engineers

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Section: Methodsmentioning

confidence: 92%

Preparation and characterization of siloxane modified: Epoxy terminated polyurethane‐silver nanocomposites

et al. 2017

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“…The siloxane-modified materials were also found to be hydrophobic and noncytotoxic, indicating potential use as a biomaterial. 47 Glycidyl carbamate chemistry While, as has been seen, the most commonly used method to synthesize glycidyl carbamate terminated materials has been through the reaction of an isocyanate with glycidol, a rather unique method to synthesize glycidyl carbamates was reported by Hanafin. 48 Hanafinʼs method involved reacting a secondary amine compound with epichlorohydrin carbonate (Fig.…”

Section: Adhesives and Elastomersmentioning

confidence: 99%

Glycidyl carbamate functional resins and their applications: a review

Webster

2020

Polymer International

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The glycidyl carbamate functional group consists of an epoxide adjacent to a carbamate or urethane. Glycidyl carbamate functional resins are compounds that have two or more glycidyl carbamate groups. Glycidyl carbamate resins can be cured through the epoxy groups with any of the typical curing agents currently used for epoxy systems such as amines, anhydrides or phenolics. An advantage of glycidyl carbamate resins is that the end user can use epoxy curing chemistry to form thermosets and obtain a polyurethane without having to handle isocyanates. This review surveys the peer-reviewed and patent literature on glycidyl carbamate functional resins and their applications. Glycidyl carbamate compositions have been explored for use in adhesives, sealants, elastomers and coatings. In most of the reported studies, glycidyl carbamate resins offer improved adhesion, flexibility and faster curing compared to conventional epoxy resin systems, making it an attractive alternative thermosetting polymer system.

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“…In addition, studies have shown that PDMS can easily migrate to the surface of the cured film and can change the surface properties of the coating . However, silicon‐modified PUs have high strength, fatigue resistance, wear resistance, solvent resistance, chemical resistance, and low surface energy, which makes the research of silicon‐containing PUs become a craze …”

Section: Introductionmentioning

confidence: 99%

Outstanding cavitation erosion resistance of hydrophobic polydimethylsiloxane‐based polyurethane coatings

Qiao

Chen

Zhang

et al. 2019

J of Applied Polymer Sci

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Cavitation erosion will create shock waves and water jets in turbulent flows. These impact pressures will affect the surface, which will lead to crack propagation and severe material degradation. In this study, we have developed hydrophobic polydimethylsiloxane‐based polyurethanes (Si‐PUx) with hydroxypropyl polydimethylsiloxane (H‐PDMS) and polytetramethylene glycol (PTMG) as mixed soft segments and 2,4‐tolylene diisocyanate, 1,4‐butanediol, triethanolamine as hard segments via a polycondensation reaction and studied its properties. The cavitation wear experiment showed that the cavitation erosion resistance of Si‐PUx coating continuously improved with the increase of H‐PDMS content, while the adhesion force of Si‐PUs reduced with the increasing of H‐PDMS content. The surface of Si‐PUx coating after cavitation test was observed using an optical microscope and three‐dimensional profiler. The cumulative mass loss of Si‐PUx with 12.5 wt % H‐PDMS was only 2.96 mg and the surface showed no obvious holes and cracks after 80 h cavitation. The results showed that cavitation resistance had a correlation with degree of water resistance, hardness, adhesion strength, and dynamic mechanical properties of coating. It seemed that the Si‐PUx coating could withstand a longer period cavitation erosion resistance compared to high strength epoxy, which could be used as protective coating for flow components under water. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47668.

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Sustainable production of polyurethane from castor oil, functionalized with epoxy- and hydroxyl-terminated poly(dimethyl siloxane) for biomedical applications

Cited by 26 publications

References 23 publications

Preparation and characterization of siloxane modified: Epoxy terminated polyurethane‐silver nanocomposites

Preparation and characterization of siloxane modified: Epoxy terminated polyurethane‐silver nanocomposites

Glycidyl carbamate functional resins and their applications: a review

Outstanding cavitation erosion resistance of hydrophobic polydimethylsiloxane‐based polyurethane coatings

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