A one-step method of plant oil direct transesterification was used to synthesize new vinyl monomers from sunflower (SFM), linseed (LSM), soybean (SBM), and olive (OVM) oils. The degree unsaturation in fatty acids as a criterion compare the free radical polymerization behavior monomers. number-average molecular weight oil-based homopolymers synthesized toluene presence AIBN at 75 °C varies 11 000–25 000 decreases follows: poly(OVM) > poly(SFM) poly(SBM) poly(LSM), corresponding increasing...

Vinyl monomers from soybean, sunflower, linseed, and olive oils were copolymerized with styrene (St), methyl methacrylate (MMA), vinyl acetate (VAc) to determine the reactivity of biobased in radical copolymerization, as well their feasibility emulsion processes for synthesis latexes. Radical copolymerization plant-oil-based is described classical Mayo-Lewis equation. Using (or miniemulsion) polymerization MMA or VAc, stable aqueous polymer dispersions latex particles measuring 80-160 nm...

This review focuses on amphiphilic diesters and "gemini" surfactants synthesized from pyromellitic acid, polyethylene glycols, aliphatic alcohols, cholesterol. The discussion encompasses their unique colloidal chemical properties, with an emphasis the relationship between critical micelle concentration hydrophilic-lipophilic balance. Structural factors, particularly length of lipophilic substituents, significantly influence CMC values in aqueous systems. Additionally, presence carboxyl...

Strategically designed amphiphilic invertible polymers (AIPs) are capable of (i) self-assembling into micellar assemblies (IMAs) in response to changes polarity environment, polymer concentration, and structure, (ii) accommodating (solubilizing) substances that otherwise insoluble water, (iii) inverting their molecular conformation the local environment. The unique ability AIPs invert depending on environment can be a decisive factor establishing novel stimuli-responsive mechanism...

This article offers a new approach to building up self-adjustable invertible polymer coatings at solid surfaces. The is based on two-step process. In the first step, surface of dispersed TiO2 has been functionalized with aid toluene diisocyanate (TDI) as coupling agent. second chains amphiphilic oligoester have covalently grafted titanium dioxide isocyanate groups. It shown that titania modified in this way can form stable suspensions both polar (water) and nonpolar (toluene) media. Multiple...

Fast formation and efficient stabilization of silver nanoparticles from [Ag(NH3)2]OH are achieved in concentrated nonpolar solutions amphiphilic invertible polyesters based on poly(ethylene oxide) (PEO) aliphatic dicarboxylic acids. Surface-modified able to be dispersed both a polar medium developed the form ready-to-use colloidal solution with an enhanced concentration. The PEO fragments cavities (also called pseudo-crown ester structures) that can bind metal ions. reduction bound ions...

A series of latexes from acrylic monomers (made olive, soybean, linseed, and hydrogenated soybean oils), significantly different in terms fatty acid unsaturation, were synthesized using miniemulsion copolymerization with styrene. The number-average molecular weight the glass transition temperature resulting copolymers high levels biobased content (up to approximately 60 wt %) depend essentially on amount unsaturation (the number double bonds triglyceride fragments plant oil-based monomers)...

The possibility of increasing the strength and operational properties ecologically safe biodegradable polymeric materials based on hydroxypropyl methyl cellulose by using its modification with different types humic acids (HAs) from lignite is considered. Hybrid high-strength films antibacterial were obtained for first time. Physicochemical studies IR spectroscopy confirmed development hybrid structures cellulose, modified HAs. Changes in water absorption, tensile strength, relative...

A silver complex is transformed into amphiphilic nanoparticles at room temperature using nanoreactors formed from an polyester. It takes a few minutes to form nanocolloids with narrow particle size distribution. Developed forms stable dispersion in both polar and nonpolar media. The polyester acts as reducing stabilizing agent simultaneously. of the synthesized depends on concentration invertible solvent polarity.

We synthesized and characterized novel amphiphilic polyesters with both hydrophilic hydrophobic functionalities. The are soluble in organic aqueous media reveal the formation of inverse architectures whose behavior could be correlated to their chemical structure. foresee that properties reported here obviously basis new solution on solid surfaces, which used a broad range applications. described synthesis copolymers is very simple based commercially available products. That makes this...

This article presents a new approach to building up self-adjustable invertible polymer coatings at solid surfaces. The is based on two-step process. In the first step, surface of dispersed TiO2 or silicon wafers was functionalized with aid reactive copolymer, viz., poly(styrene-alt-maleic anhydride) (PSM), which, in second chains amphiphilic oligoester have been tethered. latter contains both hydrophilic poly(ethylene glycol) and hydrophobic aliphatic dibasic acid moieties being alternately...

Micelles formed from new amphiphilic invertible polymers (AIPs) can sequester hydrophobic molecules in water and transfer their payload to a non-polar phase. The amount of material transferred depends primarily on micellar loading capacity. Increasing the lipophilicity AIP composition increases transferred. obtained data indicate that AIPs have potential serve as an alternative for administration polymer-based nanopharmaceuticals. Invertible polymeric micelles potentially facilitate...

Abstract Metal nanoparticles of various size and shape are prepared by the reduction metal precursors in polymer micellar architectures (nanoreactors). The nanoreactors developed from amphiphilic invertible polyesters solved over a wide concentration range solvents that strongly differ polarity. In non‐polar medium, micelle core contains hydrophilic [poly(ethylene oxide)] fragments, which acts as reducing agent ions. Nanoparticle stabilization occurs because presence hydrophobic...

For the first time, hyper-Rayleigh scattering (HRS) of invertible polymeric micellar structures has been measured. HRS measurements on amphiphilic polyesters with alternating hydrophilic and hydrophobic fragments were carried out in solvents differing polarity. The observed strong variation signals is attributed to switching behavior polyester micelles different solvents. hyperpolarizabilities size increased decreasing polarity solvent. Observing dynamics solubilization an insoluble dye...

The environment-dependent behavior of invertible polyesters has been studied by 1H NMR spectroscopy. In dilute toluene solutions, the micelle exterior is made up lipophilic fragments, and interior consists hydrophilic constituents. polyester inverts structure in an aqueous medium to form micelles with a hydrophobic inner part outer part. Increasing concentration leads formation hierarchical structures both as result aggregation unimolecular domains. On contrary, no or micellar observed...

Abstract The polymerization of 1‐vinyl‐2‐pyrrolidone (VP) mechanochemically initiated by grinding silica was investigated in a wet stirred media mill. itself proceeds from the without any additional initiator. We have found that amount grafted polymer increases with an increase total ground surface. suspension polymer‐modified nanoparticles showed high colloidal stability water because appearance hydrophilic PVP on surface during reactive grinding. Because SiO 2 ‐ graft ‐PVP are...

In this study, highly stable gold and silver nanoparticles evenly distributed within a crosslinked poly(acrylamide)/poly(N-(hydroxymethyl)acrylamide) (PAAm-PHMAAm) network have been fabricated without addition of reducing agent. Remarkably, the same chemical hydrogel composition has involved in successful fabrication spherical template. The acts simultaneously as an efficient agent stabilizer. PAAm-PHMAAm binds metal ions and, following reduction bound to template ions, proceeds via...

We synthesized and characterized novel amphiphilic invertible polyurethanes (AIPUs) that had both hydrophilic (poly(ethylene glycol), PEG) hydrophobic (polytetrahydrofuran, PTHF) constituents. Two different synthetic approaches produced macromolecules with random alternating distributions of fragments along the main backbone. Alternating AIPUs are soluble in polar nonpolar organic solvents but insoluble water. The insolubility water can be explained by microphase separation results formation...

To synthesize cross-linked latex particles protecting the encapsulated fragrance at ambient temperatures and facilitating release of cargo temperature surface skin that varies in different regions body between 33.5 36.9°C. Poly(stearyl acrylate) (PSA), a polymer with long crystallizable alkyl side chains (undergoes order-disorder transitions 45°C), was chosen as main component particles. As result, new thermoresponsive for encapsulation were synthesized characterized, including assessing...