Durable, highly hydrophobic modification of cotton fabric with fluorine-free polysiloxanes obtained via hydrosilylation and hydrothiolation reactions

Przybylak, Marcin; Szymańska, Anna; Maciejewski, Hieronim; Makowska, Karolina

doi:10.1007/s10570-020-03341-0

Cited by 19 publications

(5 citation statements)

References 46 publications

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“…Commercially available 3-mercaptopropyltrialkoxysilanes are used for modification of a wide range of compounds, i.e. castor oil, 20 polysiloxanes, 21–23 silsesquioxanes, 24–26 polyphosphasenes, 27 cyclic siloxanes, 28,29 polyethylene, 30,31 ionic liquids, 32,33 cellulose. 34,35 Reactions of alkenes with 3-mercaptopropyltrialkoxysilane or thiols with allyltrialkoxysilanes in the presence of a photoinitiator (DMPA) were used to synthesize compounds that were used to modify superparamagnetic iron oxide nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

A library of new organofunctional silanes obtained by thiol-(meth)acrylate Michael addition reaction

2023

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Section: Introductionmentioning

confidence: 99%

A library of new organofunctional silanes obtained by thiol-(meth)acrylate Michael addition reaction

2023

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“…Hydrothiolation is a widely used process due to its fast reaction rate, relatively mild conditions, high conversion, minimal or no by-products, variety of substrates, and high selectivity [2,3]. It has numerous applications, including in protective coatings, peptides [4], preparation of dendrimers [5], modification of materials [6,7], optical materials [8], ionogels [9], or hydrogels [10]. The thiol-ene reaction can be carried out by either radical or ionic means.…”

Section: Introductionmentioning

confidence: 99%

Click Addition Reaction of Urethane–Acrylate Resin Using Octa(3-thiopropyl)silsesquioxane Derivatives as Cross-Linking Agents

Pakuła,

Sztorch,

Przekop

et al. 2023

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In this work, new partially substituted derivatives of octa(3-thiopropyl)silsesquioxane (SSQ-8SH) were synthesized. The article compares the thiol-ene reaction using two methods: radical mechanism, thermally initiated (AIBN), and in the presence of a photoinitiator (DMPA). Both the crystalline and the oil forms of SSQ-8SH were functionalized. Olefins with nonpolar alkyl groups (hexene, octene, and octadecene) and vinyltrimethoxysilane, allyl glycidyl ether, allyl 2,2,3,3,4,4,5,5-octafluoropentylether, allyl methacrylate, and styrene were used in the reactions, allowing to obtain seven new derivatives. All compounds were characterized using spectroscopic (1H NMR and 29Si NMR) and spectrometric (MALDI-TOF-MS) methods. The influence of functional groups on the water contact angle value was determined. The functionalization of the compound led to a contact angle value above 95° (SSQ-4SH-4OD). Density measurements and thermogravimetric analysis (TGA) were carried out for all compounds. The highest onset temperature (357.4 °C) and temperature at the maximum mass loss rate (377.3 °C) were observed for SSQ-SH-4OD. The addition of alkyl groups significantly decreased the density of compounds with increasing chain length (1.198 g/cm3; 1.162 g/cm3; 1.095 g/cm3 for hexene, octene, and octadecene, respectively). Silsesquioxanes have potential applications in various materials, such as UV-curable resins, allowing to modify, for example, their surface properties. Modification of a commercial photocurable resin with selected derivatives was carried out to determine the impact on physicochemical properties (TGA, WCA).

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“…The organic coating includes acrylic, polyester, vinyl, epoxy, polyurethane, and resin coatings [9]. From the hydrophobic polysiloxanes and silane products, the hydrophobic impregnation coating was created; which are also used in this coating [10]. However, it has the inability to emit the vapour pressure accumulation which shows delamination on concrete [11].…”

Section: Introductionmentioning

confidence: 99%

A Study of Alkali-Activated Coatings Durability Assessment in Different Environments

Thenmozhi¹,

Prabha²

2023

Pol. J. Environ. Stud.

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Geopolymer concrete is an environment-friendly concrete that uses waste by-products from industries such as ground granulated blast furnace slag (GBFS) and fly ash as a substitution for cement in concrete. The African Buffalo Optimization (ABO) algorithm is utilized to select the proper mix. From the results of ABO, the paste and mortar type coating is prepared; the prepared mortar and paste type coating's compressive strength and setting time are measured. According to the outcomes, the alkali-activated material coatings based on fly ash and natural pozzolan (volcanic ash) with 1% and 5% acrylic emulsion P-2 and X-2 were selected and the M-2 mix is selected for paste-type coating. After the measurements, the concrete surface is coated with prepared mix coatings. The properties of geopolymer concrete with coatings such as compressive strength, adhesion strength, drying shrinkage, shear bond strength, chloride permeability, and capillary absorption of water were determined. From the results, the selected mix based on ABO gives higher strength and the durability was also high. It provides better strength, reduced shrinkage, water absorption, and chloride ion penetration than other techniques based on various polymeric additive coatings.

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Durable, highly hydrophobic modification of cotton fabric with fluorine-free polysiloxanes obtained via hydrosilylation and hydrothiolation reactions

Cited by 19 publications

References 46 publications

A library of new organofunctional silanes obtained by thiol-(meth)acrylate Michael addition reaction

A library of new organofunctional silanes obtained by thiol-(meth)acrylate Michael addition reaction

Click Addition Reaction of Urethane–Acrylate Resin Using Octa(3-thiopropyl)silsesquioxane Derivatives as Cross-Linking Agents

A Study of Alkali-Activated Coatings Durability Assessment in Different Environments

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