Tag: M.W=400-500

Kramer, Stanko published the artcileHierarchically Porous Microspheres by Thiol-ene Photopolymerization of High Internal Phase Emulsions-in-Water Colloidal Systems, SDS of cas: 7575-23-7, the main research area is thiol ene photopolymerization porous microsphere functionalization dye adsorption; adsorption; methylene blue; multiple emulsions; polyHIPE; porous microspheres; porous polymers; suspension polymerization; thiol-ene polymerization.

A facile method for the preparation of hierarchically porous spherical particles using high internal phase water-in-oil-in-water (w/o/w) double emulsions via the photopolymerization of the water-in-oil high internal phase emulsion (w/o HIPE) was developed. Visible-light photopolymerization was used for the synthesis of microspherical particles. The HIP emulsion had an internal phase volume of 80% and an oil phase containing either thiol pentaerythritol tetrakis(3-mercaptopropionate) (PETMP) or trimethylolpropane tris(3-mercaptopropionate) (TMPTMP) and acrylate trimethylolpropane triacrylate (TMPTA). This enabled the preparation of microspheres with an open porous morphol., on both the surface and within the microsphere, with high yields in a batch manner. The effect of the thiol-to-acrylate ratio on the microsphere diameter, pore and window diameter, and degradation was investigated. It is shown that thiol has a minor effect on the microsphere and pore diameter, while the acrylate ratio affects the degradation speed, which decreases with increasing acrylate content. The possibility of free thiol group functionalization was demonstrated by a reaction with allylamine, while the microsphere adsorption capabilities were tested by the adsorption of methylene blue.

Polymers (Basel, Switzerland) published new progress about Adsorption. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, SDS of cas: 7575-23-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Aydin Urucu, Oya published the artcileSelective molecularly imprinted polymer for the analysis of chlorpyrifos in water samples, COA of Formula: C17H28O8S4, the main research area is molecularly imprinted polymer water sample chlorpyrifos removal.

In this paper, a new molecularly imprinted solid-phase extraction (MISPE) method was described for the determination of the chlorpyrifos in water samples. A thiol-ene based UV-cured polymer was prepared by mixing glyoxal bis (-diallyl acetal), pentaerythritol tetrakis (3-mercaptopropionate), polyethylene glycol diacrylate (PEGDA), and photoinitiator. Chlorpyrifos was added to the prepared polymer as a template analyte, and its anal. was performed by gas chromatog. with mass detection (GC-MS). The influence of some anal. parameters was studied. We found that the use of the molecularly imprinted polymer (MIP) UV-cured disk provides an easy, selective, and available solution for removing chlorpyrifos from water samples.

Journal of Industrial and Engineering Chemistry (Amsterdam, Netherlands) published new progress about Adsorption. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, COA of Formula: C17H28O8S4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wang, Aili published the artcileControllable click synthesis of poly(ionic liquid)s by surfactant-free ionic liquid microemulsions for selective dyes reduction, Computed Properties of 7575-23-7, the main research area is surfactant free polyionic liquid preparation dye reduction property.

This work reveals the synthesis of poly(ionic liquid)s (poly-ILs) with controllable beading network structure. The synthesis route involved the formation of novel surfactant-free ionic liquid microemulsions and the in situ photo-initiated thiol-ene “”click”” reaction. Notably, the beading size of poly-IL’s networks was adjusted by altering the component proportion of the designed surfactant-free ionic liquid microemulsion. To characterize the as-prepared polymers, FTIR, DLS, NMR, TGA, DSC, SEM and UV-vis were used, and the adsorption isotherm/kinetics studies were carried out. The results show that poly-ILs exhibit distinct adsorption selectivity and high adsorption capacity for nonionic dye disperse red (1080 mg/g), and these dye absorption polymers can be easily regenerated and recycled without a significant decrease. Therefore, the designed poly-ILs indicate remarkable potential in the application of dying wastewater treatment.

Reactive & Functional Polymers published new progress about Adsorption. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Computed Properties of 7575-23-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wu, Ke published the artcileA humidity sensor based on ionic liquid modified metal organic frameworks for low humidity detection, Safety of Pentaerythritol tetra(3-mercaptopropionate), the main research area is ionic liquid metal organic framework polyelectrolyte humidity sensor stability.

Low humidity detection has always been a challenge in the field of humidity detection. Humidity sensors base on ionic liquid modified metal organic frameworks (MOFs) derived polymer films were prepared in this work. The ionic liquid ligand was uniformly introduced in the frameworks of UIO-66 to enhance the hydrophilicity of sensing materials, the caused defects sites are beneficial for adsorption and desorption, and the MOFs based functional films were easily obtained by in situ photoinduced thiol-ene click reaction. The obtained humidity sensor exhibits a linear response in low relative humidity (RH) range (5% RH – 30% RH) with a tiny humidity hysteresis (∼0.2% RH) and short response time to humidity change (response/recovery time is 0.6 s/1.7 s, resp.).

Sensors and Actuators, B: Chemical published new progress about Adsorption. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Safety of Pentaerythritol tetra(3-mercaptopropionate).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yap, Pei Lay published the artcileMultithiol functionalized graphene bio-sponge via photoinitiated thiol-ene click chemistry for heavy metal ions adsorption, COA of Formula: C17H28O8S4, the main research area is wastewater adsorption graphene oxide adsorbent uv irradiation functionalization thiol; heavy metal cation seawater remediation.

Heavy metals contamination in the natural waters remains an unresolved environmental challenge pressing for the development of purification technologies. This paper presents the green engineering of a new bio-sponge for heavy metals adsorption composed of alginate bio-polymeric network encapsulated with reduced graphene oxide (rGO) modified with iron oxide nanoparticles and covalently attached multithiol (pentaerythritol tetrakis-mercaptopropionate) mols. using photoinitiated thiol-ene click chem. The multithiol functionalized graphene bio-sponge (SH-Graphene bio-sponge) is designed to enhance adsorption performances of heavy metals including structural approach combined with oxygen functionalities and high d. of sulfur-containing groups (10.2 at % S, confirmed by XPS, XPS) with high binding affinity towards specific heavy metals (Cd and Pb). It was shown that the level of thiol functionalization on the graphene structure within the bio-sponge can be controlled by tuning the UV irradiation time without adjusting the concentration of the precursors. SH-functionalized graphene bio-sponge showed outstanding adsorption capacity for Pb (II): 101.01 mg/g and Cd (II): 102.99 mg/g, outperformed com. and literature reported adsorbents in highly competitive selectivity studies using co-existing heavy metal ions (Cu, Co, Pb and Cd) spiked- sea water. The multithiol modified bio-sponge also showcased an excellent stability and reusability feature with only 0.015 mg/L Pb (II) detected, conforming the strict United States Environmental Protection Agency (US EPA) maximum contaminant level (MCL) for lead, after five recurring cycles using mixed heavy metal ions solution and acidic eluent. The outcomes from this work present valuable and promising contribution towards the development of a scalable and sustainable adsorbents for efficient remediation of heavy metals from waters.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Adsorbents. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, COA of Formula: C17H28O8S4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yavuz, Mustafa Selman published the artcileHighly efficient chlorinated solvent uptake by novel covalent organic networks via thiolene chemistry, Computed Properties of 7575-23-7, the main research area is covalent organic network adsorbent chlorinated solvent uptake.

In this study, an aliphatic-aromatic regular network is synthesized as a novel covalent organic networks called TEPN-1 (Thiol-ene Polymer Network) and TEPN-2 via thiol-ene chem. TEPN-1 and TEPN-2 were analyzed by FTIR, 13C-NMR, Brunauer-Emmett-Teller, thermogravimetric anal., and elemental anal. Solvent uptake capacity of TEPN-1 and TEPN-2 was employed against 26 solvents which are frequently used in chem. industry. It is found that TEPN-1 has the highest swelling adsorption ratio with chloroform and DCM (13.7 and 11.5 g.g-1, resp.), while TEPN-2 has 9.2 and 7.5 g.g-1, resp. Both TEPN-1 and TEPN-2 have very minimal water uptake (0.165 and 0.189 g.g-1, resp.). The TEPN-1 and TEPN-2 are efficient adsorbents for most of organic solvents including water-miscible organic solvents such as THF, dioxane, and pyridine.

Polymer Bulletin (Heidelberg, Germany) published new progress about Adsorbents. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Computed Properties of 7575-23-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bhattacharya, Sayantani published the artcileTriphenylphosphonium conjugated quaternary ammonium based gel: synthesis and potential application in the efficient removal of toxic acid orange 7 dye from aqueous solution, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate), the main research area is triphenylphosphonium conjugated quaternary ammonium gel orange 7 removal.

Adsorptive removal of azo dyes from textile effluents is considered to be one of the most widely used means of wastewater decontamination owing to its inexpensiveness, regeneration feasibility, and overall robustness. Most importantly, this process inherently eliminates the formation of offensive end products that eventuates further disposal problems. Therefore, it is imperative to design a suitable adsorbent that has a facile synthetic route and that features high dye removal efficiency as well as substantial regeneration. Hence, in this work, we have developed an ingenious adsorbent based on the thiol-norbornene photocrosslinking reaction. To facilitate the removal of the anionic azo dye acid orange 7, we have prudently introduced quaternary ammonium as well as triphenylphosphonium functionalities in the crosslinked network. Characterization of all the monomers and the crosslinker was accomplished by using standard spectroscopic and anal. techniques. The porous morphol. of the crosslinked gel was visualized via FE-SEM and TEM anal. Addnl., rheol. studies revealed the presence of viscoelasticity in the network. Besides, the solvent uptake ability of the gel was also explored in various solvents, and it was reasonably correlated with the solubility parameter. In this regard, swelling in water was found to be particularly beneficial, as a high water uptake allowed internal adsorption sites present in the gel to be fully exposed to the dye mols., thereby ameliorating dye removal. The material showed excellent thermal stability up to 240 °C. Further, the adsorption nature of the gel correlated well with the pseudo-second order kinetic model as well as the Freundlich adsorption isotherm model. The influence of varying temperatures (303-323 K) as well as pH (2-10) on the adsorption process was also evaluated. The maximum dye removal efficiency of 105.8 mg g-1 was obtained at 303 K. Interestingly, the material was reasonably recyclable up to 10 cycles with no significant loss of re-adsorption efficiency (around 7% loss between the 1st and 10th cycle). We envisage that this strategy of developing low-cost, efficient adsorbents will expand the scope of utilizing environmentally friendly thiol-norbornene photo click chem. to alleviate water pollution.

New Journal of Chemistry published new progress about Adsorbents. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Haney, Bobby published the artcileStimuli responsive Janus microgels with convertible hydrophilicity for controlled emulsion destabilization, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate), the main research area is Janus microgel stimulus hydrophilicity emulsion destabilization.

Although the utilization of rigid particles can afford stable emulsions, some applications require eventual emulsion destabilization to release contents captured in the particle-covered droplet. This destabilizing effect is achieved when using stabilizers that respond to controlled changes in environment. Microgels can be synthesized as stimuli responsive polymeric gel networks that adsorb to oil/water interfaces and stabilize emulsions. These particles are commonly hydrogels that swell and collapse in water in response to environmental changes. However, amphiphilic functionality is desired to enhance the adsorption abilities of these hydrogels while maintaining their stimuli responsivity. Microfluidic techniques are used to synthesize Janus microgels with two opposing stimuli responsive hemispheres. The particles have a temperature responsive domain connected to a pH responsive network where each side changes its hydrophilicity in response to a change in temperature or pH, resp. The Janus microgels are amphiphilic in acidic conditions at 19 °C and alk. conditions at 40 °C, while the opposite conditions cause a reduction of the amphiphilicity. By stabilizing emulsions with these dual responsive microgels, “”smart”” droplets that respond to environmental cues are formed. Emulsion droplets remain stable with smaller diameters when aqueous solution conditions favor amphiphilic particles yet, coalesce to larger droplets upon changing pH or temperature

Soft Matter published new progress about Adsorption. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Mortazavian, Hamid published the artcileUnderstanding the role of shape and composition of star-shaped polymers and their ability to both bind and prevent bacteria attachment on oral relevant surfaces, Name: Pentaerythritol tetra(3-mercaptopropionate), the main research area is star shaped polymer bind bacteria attachment oral relevant surface; acrylic acid; antibacterial; antifouling; composition; dental; hydrophobicity; hydroxyapatite; oral; polymer; star-shaped.

In this study, we have prepared a series of 4- and 6-arm star-shaped polymers with varying mol. weight and hydrophobicity in order to provide insight into the role and relationship that shape and composition have on the binding and protecting of oral relevant surfaces (hydroxyapatite, HAP) from bacteria colonization. Star-shaped acrylic acid polymers were prepared by free-radical polymerization in the presence of chain transfer agents with thiol groups, and their binding to the HAP surfaces and subsequent bacteria repulsion was measured. We observed that binding was dependent on both polymer shape and hydrophobicity (star vs. linear), but their relative efficacy to reduce oral bacteria attachment from surfaces was dependent on their hydrophobicity only. We further measured the macroscopic effects of these materials to modify the mucin-coated HAP surfaces through contact angle experiments; the degree of angle change was dependent on the relative hydrophobicity of the materials suggesting future in vivo efficacy. The results from this study highlight that star-shaped polymers represent a new material platform for the development of dental applications to control bacterial adhesion which can lead to tooth decay, with various compositional and structural aspects of materials being vital to effectively design oral care products.

Journal of Functional Biomaterials published new progress about Adsorption. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Name: Pentaerythritol tetra(3-mercaptopropionate).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Samanta, Archana published the artcileCharge Regulated Diffusion of Silica Nanoparticles into Wood for Flame Retardant Transparent Wood, Application of Pentaerythritol tetra(3-mercaptopropionate), the main research area is flame retardant transparent silica nanoparticle wood polymer biocomposite property.

The preparation of wood substrates modified by charged inorganic nanoparticles (NPs) diffusing into the internal cell wall structure is investigated for generating functional properties. The flammability problem of wood biocomposites is addressed. NPs applied from colloidal sols carry charge to stabilize them against aggregation. The influence of charge on particle diffusion and adsorption should play a role for their spatial distribution and localization in the wood substrate biocomposite. It is hypothesized that improved dispersion, infiltration, and stability of NPs into the wood structure can be achieved by charge control diffusion, also restricting NP agglomeration and limiting distribution to the wood cell wall. Cationic and anionic silica NPs of ≈30 nm are therefore allowed to diffuse into bleached wood. The influence of charge on distribution in wood is investigated as a function of initial sol concentration Transparent wood is fabricated by in situ polymerization of a thiol-ene in the wood pore space. These biocomposites demonstrate excellent flame retardancy with self-extinguishing characteristics. The approach has potential for com. fabrication of flame retardant transparent composites for glazing and other building applications.

Advanced Sustainable Systems published new progress about Adsorption. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Application of Pentaerythritol tetra(3-mercaptopropionate).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts