Abstract The modification of cotton fabrics with water-soluble cationic copolymers for salt-free dyeing applications reactive dyes is explored in the present work. To this end, a family bifunctional was designed through chemical poly(4-vinyl benzyl chloride), PVBC, triethylamine, TEAM. These were applied onto aqueous alkaline solutions at moderate temperature (60 °C). successful verified characterization modified samples Raman and XPS spectroscopy. Moreover, polymer coverage fabric order...

Abstract Quantitative analysis of methylene blue (MB) has been performed with Surface Enhanced Raman Scattering, SERS, using citrate reduced silver colloid activated NaCl. In this study, the combination SERS occurring at proximity plasmon surface and resonance excitation wavelength matched to maximum absorbance molecule being analyzed, was successfully applied maximize scattering intensity. The surface‐enhanced (SERRS) spectra aqueous solutions dye various concentrations were collected in...

Hybrid polymeric materials incorporating carbon nanostructures or inorganic constituents stand as a promising class of exhibiting distinct but also complementary features. Carbon nanotubes have been proposed unique candidates for polymer reinforcement; however, sustained efforts are further needed in order to make full use their potential. The final properties the reinforced controlled part by morphology and eventual molecular orientation matrix. In present study, multiwall (MWCNTs) were...

Self-healing materials and self-healing mechanisms are two topics that have attracted huge scientific interest in recent decades. Macromolecular chemistry can provide appropriately tailored functional polymers with desired healing properties. Herein, we report the incorporation of glycidyl methacrylate-based (GMA) copolymers waterborne polyurethanes (WPUs) study their potential ability. Two types were synthesized, namely hydrophobic P(BA-co-GMAy) GMA n-butyl acrylate (BA) amphiphilic...

The effect of different pretreatment approaches based on alkali (NaOH)/hydrogen peroxide (H2O2) willow sawdust (WS) biomass, in terms delignification efficiency, structural changes lignocellulose and subsequent fermentation toward ethanol, was investigated. Bioethanol production carried out using the conventional yeast Saccharomyces cerevisiae, as well three non-conventional yeasts strains, i.e., Pichia stipitis, Pachysolen tannophilus, Wickerhamomyces anomalus X19, separately co-cultures....

In the present study, bifiller system incorporating various amount of multiwalled carbon nanotubes (MWCNTs) and 3 wt% clay in polypropylene is investigated to obtain composites with multifunctional performance. The dispersion state two nanofillers matrix was characterized by applying TEM Raman spectroscopy. Both demonstrate similar rheological behavior a percolation threshold ϕ p1 = 1.5 for monofiller p2 2 systems (MWCNTs 3% clay). effect on electromagnetic nanomechanical properties...

The reactions of copper(ii) carboxylate sources with acetylacetone dioxime (acacdoH2) in Me2CO have been studied and a novel, metal ion-assisted ligand transformation has discovered. reaction [Cu2(diba)4(dibaH)2] acacdoH2 (1 : 1.5) provided access to the complex {[Cu2(diba)4(qunx)]}n (1) low yield (25-30%), where dibaH is 3,3-dimethylbutyric acid qunx quinoxaline. [Cu2(piv)4(pivH)2]/acacdoH2 system warm Me2CO, pivH pivalic acid, gave analogous {[Cu2(piv)4(qunx)]}n (2) moderate (∼50%)....

Abstract Electrical relaxation and conductivity processes in amorphous semicrystalline poly(ethylene terephthalate) (PET) naphthalate) (PEN) homopolymers certain PET/PEN copolymers have been studied by means of dielectric spectroscopy. Homopolymers able to crystallize were subjected successive thermal runs investigate the influence history upon morphology electrical behavior polymeric systems. The untreated as well heat‐treated specimens was determined Differential Scanning Calorimetry...

Abstract The collection of surface‐enhanced Raman scattering (SERS) by silver nanocolloids was used to identify the critical micelle concentration (CMC) three cationic surfactants in 0.5‐M NaCl solutions: hexadecyltrimethylammonium bromide, dodecyltrimethylammonium and benzalkonium chloride. Despite structural similarity between test surfactans, differences shape size respective micelles affected corresponding SERS signals. CMC values determined this method agreed with measured conventional...

Abstract The purpose of the present study was to analyze normal and degenerated menisci with Raman methodology on thin sections formalin fixed paraffin embedding tissues correlate findings grade meniscus degeneration. Menisci (n = 27) were removed from human knee joints after total replacement or meniscectomy. Following routine histopathological analysis determine meniscal lesions obtained healthy formaline embedded (FFPE) sections, polarization approach applied evaluate orientation collagen...

We examine the application of an oscillating cell in combination with right-angle Raman scattered light collection geometry for quantitative Surface Enhanced (Resonance) Scattering (SER(R)S) measurements from nano-colloidal noble metal solutions. This excitation/collection configuration allows specific SERS and SERRS signatures aqueous solutions mitoxantrone, antitumor drug, to be easily resolved at (sub)-ng/mL (sub)-pg/mL concentration levels. A partial least-squares (PLS) chemometric...

To assess the potential impact of corneal crosslinking treatment (365 nm ultraviolet (UV)A irradiation with riboflavin) on material properties Intracorneal Rings Segments (ICRS).Material were studied using FT-IR spectroscopy and UV-Vis spectroscopy. examined: (1) after installation riboflavin solution, (2) UV-A light (3) instillation solution followed by coeval irradiation. The experiments standard cross-linking (CXL) protocol treatment.After a permanent intense yellow staining samples was...

A notable application of polymeric nanocomposites is the design water vapor permeable (WVP) membranes. “Breathable” membranes can be created by incorporation micro/nanofillers, such as CaCO3, that interrupt continuity phase and when subjected to additional uniaxial or biaxial stretching this process leads formation micro/nanoporous structures. Among candidate nanofillers, carbon nanotubes (CNTs) have demonstrated excellent intrinsic WVP properties. In study, chemically modified MWCNTs with...

Nanomaterials are integrated within consumer products to enhance specific properties of interest. Their release throughout the lifecycle nano-enabled raises concerns; specifically, mechanical strains can lead generation fragmented materials containing nanomaterials. We investigated potential single-walled carbon nanotubes (SWCNTs—brand TUBALL™) from epoxy composite materials. A pin-on-disk-type tribometer was used for accelerated aging nanocomposites. pristine nanocomposite material, abraded...

The aim of the study was to assess effect anode materials, namely a carbon nanotube (CNT)-buckypaper and commercial paper (CP) on performance two-chamber microbial electrolysis cell (MEC), in terms hydrogen production main electrochemical characteristics. experiments were performed using both acetate-based synthetic wastewater real wastewater, specifically effluent dark fermentative hydrogenogenic reactor (fermentation effluent), cheese whey (CW) as substrate. results showed that CP led...

The goal of this work is to model the nature chemical species [CdCl2(extractant)2] that are formed during solvent (or liquid-liquid) extraction toxic cadmium(II) from chloride-containing aqueous media using hydrophobic 2-pyridyl ketoximes as extractants. Our coordination chemistry approach involves study reactions between chloride dihydrate and phenyl ketoxime (phpaoH) in water-containing acetone. have provided access complexes [CdCl2(phpaoH)2]∙H2O (1∙H2O) {[CdCl2(phpaoH)]}n (2); solid-state...

The surface enhanced Raman scattering spectroscopy (SERS) is introduced as a new method to probe the initial release of active agents from controlled delivery systems. As model system, mitoxantrone-loaded polypropylene specimens immersed in water have been utilized. Surface resonance (SERRS) measurements allowed quantitative delineation drug profile. SERRS was also compared early stage processes with UV–vis absorption often used traditional analysis via HPLC, common technique for evaluation....

Cubic boron nitride (c-BN) powders of different particle size fractions have been examined with FTIR, DRIFT, ATR, micro-Raman, and micro-IR spectroscopy. The heterogeneity the c-BN surface has shown. quantum chemical simulations structure vibrational spectra particles allowed to assign main bands perform structure−property correlations.

Carbon nanotubes (CNTs) have attracted great attention for their potential use in many applications because of intrinsic properties. The importance other than the impact application CNT‐embedded membranes area water technology development is immense. In this context, identification and quantification CNTs aqueous resources during relevant purification processes can be proven high significance. Surface‐enhanced Raman scattering (SERS) potentially has sensitivity required trace analysis been...