Hybrid films based on nonisocyanate polyurethanes with antimicrobial activity

Aguiar, Kelen Menezes Flores Rossi de; Alves, Vinícius S.; Noeske, Michael; Rischka, Klaus; Portela, Maristela Barbosa; Ferreira‐Pereira, Antônio; Rodrigues‐Filho, Ubirajara Pereira

doi:10.1016/b978-0-12-818435-6.00004-9

Cited by 7 publications

(5 citation statements)

References 145 publications

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“…The underlying antimicrobial strategies may comprise several components. Among them, providing anti-adhesive surfaces to avoid or retard microbial attachment, 26 contact-active surfaces that are based on immobilized and not released active species, 3,27 and biocide-releasing surfaces. 28 Tailoring strongly attaching lms composed of amphiphilic molecules with respect to their antibacterial activity has been reported based on approaches considering thick lms 29,30 and polymeric 20 or hybrid 18 bulk materials containing quaternary ammonium species.…”

Section: Introductionmentioning

confidence: 99%

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New details of assembling bioactive films from dispersions of amphiphilic molecules on titania surfaces

et al. 2020

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New details of assembling bioactive films from dispersions of amphiphilic molecules on titania surfaces

et al. 2020

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“…One of such compounds is poly(dimethylsiloxane) (PDMS), which is classified as a silicone and can be used to build different types of devices including implants, microfluidic devices, microchips, water repellents, membrane for gas permeability, lithography, antifouling coating for marine environment and many others [20][21][22][23]. Over the past years, our research network worked on the synthesis of hybrid NIPUs from PDMS-based bis(cyclocarbonate) with (3aminopropyl)triethoxysilane (APTES) as chain coupling agent [24] leading to the formation of different materials with potential applications as protective and antimicrobial coatings [25] or photonics [26].…”

Section: Highlightsmentioning

confidence: 99%

PDMS-urethanesil hybrid multifunctional materials: combining CO2 use and sol–gel processing

Günther

Lima

Aguiar

et al. 2020

J Sol-Gel Sci Technol

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CO2 mitigation by cycloaddition to bis-epoxides to obtain bis-cyclocarbonates (CC) paved one way to a new class of polyurethanes (PUs), the non-isocyanate polyurethanes (NIPUs). By using molecules functionalized with alkoxysilyl groups as end chain it is possible to obtain hybrid NIPUs, also called urethanesils, by Sol-Gel chemistry. Using bis-cyclocarbonate polydimethylsiloxane (CCPDMS) with proper diamines and end-chain amino silanes followed by sol-gel processing leads to versatile hybrid non-isocyanate polydimethylsiloxane urethanes (PDMS-urethanesil). This review reports-besides our recent studies about PDMS-urethanesil materials-the sol-gel chemistry applied to synthesize urethanesil and its applications. While the antimicrobial, photochromic, and anticorrosion properties of urethanesil loaded with phosphotungstic acid as well as the luminescent effect of material loaded with Eu 3+ have already been reported, antimicrobial features of urethanesil loaded with phosphoric acid are our newest findings which we herein report for the first time. The impact of the inorganic acid used on the sol-gel process is highlighted together with the importance of antibiofouling properties. Although the antibiofouling mechanism is still under investigation, the broad spectrum of action of phosphoric acid loaded urethanesil is worth mentioning, since it has been tested to be efficient against some pathogenic bacteria including a drug resistant Staphylococcus aureus strain as well as pathogenic fungi and yeast. Due to the simple, straightforward, and highly reproducible synthesis as well as the opportunity to obtain versatile materials with tuneable mechanical and physical properties, this new class of hybrid materials promises to be applicable in different industrial fields.

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“…Conventional PU synthesis involves the use of highly toxic isocyanates, which are harmful for human health . Compared to conventional PUs, polyhydroxyurethanes (PHUs) prepared via the reaction of cyclic carbonates with primary amines have attracted considerable interest in recent years because of their isocyanate-free synthetic routes, enhanced properties (vs that of PU), and promising applications. − Herein, we report a new kind of nonconventional luminogens based on aliphatic polyhydroxyurethane for the first time. The new luminogens are prepared from polyfunctional aliphatic cyclic carbonate and amines via a simple method, avoiding the use of toxic isocyanates.…”

Section: Introductionmentioning

confidence: 99%

A New Kind of Nonconventional Luminogen Based on Aliphatic Polyhydroxyurethane and Its Potential Application in Ink-Free Anticounterfeiting Printing

Feng

Zhao

et al. 2020

ACS Appl. Mater. Interfaces

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Organic luminogens have extensive applications due to their unique photophysical properties. In recent years, nonconjugated organic luminogens, in contrast to traditional conjugated luminogens, have gained much attention because of their facile preparation, environmental friendliness, and biocompatibility. In this study, a new kind of nonconventional luminogen based on dynamic covalent cross-linked polyhydroxyurethane is reported for the first time. The new luminogen not only exhibits intrinsic strong fluorescent emission in the solid state but also possesses high mechanical properties along with good shape memory and self-healing properties. In addition, the new luminogens are synthesized from aliphatic polyfunctional cyclic carbonate and amines via a much more straightforward method, avoiding the use of toxic isocyanates. Investigations indicated that the intrinsic luminescence of the resultant luminogens was induced by the cross-linking of polymer chains and could be well tuned by controlling the degree of cross-linking. By taking advantage of the unique characteristics of the resultant polymer luminogens, we further developed a facile method, named "light-mediated ink-free screen printing", for anticounterfeiting paper fabrication. Different from traditional ink-based printing technology, the new method used UV-light instead of expensive security ink to encode anticounterfeiting information on natural cellulose paper. The anticounterfeiting information is stable under various wet conditions, showing promising applications in the fast-growing counterfeiting of pharmaceuticals, packaging, and the food industry.

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Hybrid films based on nonisocyanate polyurethanes with antimicrobial activity

Cited by 7 publications

References 145 publications

New details of assembling bioactive films from dispersions of amphiphilic molecules on titania surfaces

New details of assembling bioactive films from dispersions of amphiphilic molecules on titania surfaces

PDMS-urethanesil hybrid multifunctional materials: combining CO2 use and sol–gel processing

A New Kind of Nonconventional Luminogen Based on Aliphatic Polyhydroxyurethane and Its Potential Application in Ink-Free Anticounterfeiting Printing

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