Category: alcohols-buliding-blocks

Albu, Paul Constantin published the artcilepH and Design on n-Alkyl Alcohol Bulk Liquid Membranes for Improving Phenol Derivative Transport and Separation, Safety of n-Octanol, the main research area is alkyl alc bulk liquid membrane transport separation; bulk liquid membranes; liquid membrane design; n–decanol membranes; n–octanol membranes; pH operational parameter; permeation module design; phenol derivative separation; phenol derivative transports.

Regardless of the type of liquid membrane (LM) (Bulk Liquid Membranes (BLM), Supported Liquid Membranes (SLM) or Emulsion Liquid Membranes (ELM)), transport and separation of chem. species are conditioned by the operational (OP) and constructive design parameters (DP) of the permeation module. In the present study, the pH of the aqueous source phase (SP) and receiving phase (RP) of the proposed membrane system were selected as operational parameters. The mode of contacting the phases was chosen as the convective transport generator. The experiments used BLM-type membranes with spheres in free rotation as film contact elements of the aqueous phases with the membrane. The target chem. species were selected in the range of phenol derivatives (PD), 4-nitrophenol (NP), 2,4-dichlorophenol (DCP) and 2,4-dinitrophenol (DNP), all being substances of tech.-economic and environmental interest. Due to their acid character, they allow the evaluation of the influence of pH as a determining operational parameter of transport and separation through a membrane consisting of n-octanol or n-decanol (n-AlcM). The comparative study performed for the transport of 4-nitrophenol (NP) showed that the module based on spheres (Ms) was more performant than the one with phase dispersion under the form of droplets (Md). The sphere material influenced the transport of 4-nitrophenol (NP). The transport module with glass spheres (Gl) was superior to the one using copper spheres (Cu), but especially with the one with steel spheres (St). In all the studied cases, the sphere-based module (Ms) had superior transport results compared to the module with droplets (Md). The extraction efficiency (EE) and the transport of 2,4-dichlorophenol (DCP) and 2,4-dinitrophenol (DNP), studied in the module with glass spheres, showed that the two phenolic derivatives could be separated by adjusting the pH of the source phase. At the acidic pH of the source phase (pH = 2), the two derivatives were extracted with good results (EE > 90%), while for pH values ranging from 4 to 6, they could be separated, with DCP having doubled separation efficiency compared to DNP. At a pH of 8 in the source phase, the extraction efficiency halved for both phenolic compounds

Membranes (Basel, Switzerland) published new progress about Contact angle. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Safety of n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Jeong, Songah published the artcileHierarchical Design of Functional, Fibrous, and Microporous Polymer Monoliths for the Molecular Recognition of Diethylstilbestrol, COA of Formula: C17H28O8S4, the main research area is hierarchical fibrous microporous polymer mol recognition diethylstilbestrol; endocrine disruptor mol recognition.

This paper demonstrates the hierarchical design of functional, fibrous polymer monoliths. The monoliths are composed of conjugated microporous polymers that not only are embedded with heteroatoms but also feature fibrous yet compressible structures due to the in situ self-assembly process that occurs during the polymerization process. Therefore, the doped nitrogen atoms can allow the growth of zeolitic imidazolate framework (ZIF) nanocrystals, which causes the homogeneous encapsulation of individual fibers. The resulting hybrid monoliths exhibit enhanced phys. properties as well as catalytic activity, allowing the formation of an addnl. coating layer via a thiol-epoxy reaction. The deliberate inclusion of template mols. during the reaction forms molecularly imprinted sites on the fibers to afford functional monoliths. As a proof of concept, the hierarchically designed materials are able to show effective recognition properties toward diethylstilbestrol, an endocrine disruptor, taking advantage of the binding sites that selectively capture the analyte mols. and the fibrous morphol. that increases the accessibility of these binding sites. We envisage that the incorporation of various heteroatoms or nanocrystals will bring about the bespoke design of advanced monoliths with autonomous functions, leading to smart textile systems.

Analytical Chemistry (Washington, DC, United States) published new progress about Contact angle. 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

Liang, Ziwei published the artcileArbitrarily and repeatedly programmable multi-layer soft actuators via “”stress-caching””, Related Products of alcohols-buliding-blocks, the main research area is multilayer shape memory material.

Multi-layered strategy is prevalent in actuator fabrication since only a mismatch of geometric changing between layer(s) under the external stimulus is required, allowing to avoid meticulous mol. synthesis. Nonetheless, their actuation manners are usually limited to simple bending, of which the direction as well as amplitude are not (re)programmable after synthesis. Here, an arbitrarily and repeatedly programmable multi-layered actuator via “”stress-caching””, where a shape memory polymer (SMP) is sandwiched with two coated hydrogel layers, is presented. Via varying the swelling/de-swelling degree between the top and bottom hydrogel layers, the designed internal stress, determining the bending direction and angle, was stored within the actuator due to the constraint of the rigid SMP layer. Upon heating, the release of the cached stress induced a “”snap-like”” fast actuation and the resultant geometry can be designed, preserved or recovered on demand. Addnl., the flame-retardant hydrogel layers safeguarded the actuator to work at high temperatures (even directly exposed to flame), ensuring potential applications in a fire-rescuing scenario as demonstrated. Thus, our stress-caching approach shall diversify the designs of actuator since other myriad smart materials with distinct responsiveness and functionality can be straightforwardly employed.

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

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Lazauskas, Algirdas published the artcileTrilayer Composite System Based on SiO2, Thiol-Ene, and PEDOT:PSS. Focus on Stability after Thermal Treatment and Solar Irradiance, SDS of cas: 7575-23-7, the main research area is trilayer composite system thermal treatment stability solar irradiance; PEDOT:PSS; SiO2; composite; solar irradiance; stability; thermal; thiol-ene; trilayer.

The trilayer composite was fabricated by combining functional layers of fumed SiO2, thiol-ene, and poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT-PSS). Optical, scratch-healing, non-wetting, and elec. stability was investigated at different instances of time after thermal and solar irradiance treatment. The trilayer composite was found to be optically stable and highly transparent for visible light after thermal and irradiance treatment for 25 h. Both treatment processes had a minor effect on the shape-memory assisted scratch-healing performance of the trilayer composite. Thermal treatment and solar irradiance did not affect the superhydrophobic properties (contact angle 170 ± 1°) of the trilayer composite. The sheet resistance increased from 90 ± 3 Ω/square (initial) to 109 ± 3 Ω/square (thermal) and 149 ± 3 Ω/square (irradiance) after 25 h of treatment, which was considered as not significant change.

Polymers (Basel, Switzerland) published new progress about Contact angle. 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

Gan, Jiapan published the artcileMicrowave assisted extraction with three modifications on structural and functional properties of soluble dietary fibers from grapefruit peel, Synthetic Route of 59-23-4, the main research area is grapefruit peel soluble dietary fiber microwave assisted extraction.

Microwave-sodium hydroxide treatment (MST), microwave-enzymic treatment (MET) and microwave-ultrasonic treatment (MUT) were used to treat grapefruit peel, then the structural and functional properties of extracted soluble dietary fibers (SDF), named as MST-SDF, MET-SDF and MUT-SDF, were investigated. The SEM, mol. weight, X-ray diffraction, FT-IR, thermal properties and monosaccharide composition were used to determine the structural properties. Compared to the grapefruit peel SDF without treatment (WT-SDF) and pure microwave treatment (PMT-SDF), MST-SDF, MET-SDF and MUT-SDF showed a more complex and loose structure. Moreover, they possessed higher mol. weight, crystallinity and thermal stability, and more diverse monosaccharide composition In addition, functional properties, including water holding capacity (WHC), oil holding capacity (OHC), cholesterol adsorption capacity (CAC), glucose adsorption capacity (GAC) and nitrite ion adsorption capacity (NIAC), were enhanced by the three different modification methods. Especially, MUT-SDF showed the highest WHC, OHC, CAC, GAC and NIAC as compared with the other samples. In summary, the present study suggested that the MUT could be used as the ideal modification method for grapefruit peel SDF, and MUT-SDF has great potential for the application in functional food industry.

Food Hydrocolloids published new progress about Crystallinity. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Synthetic Route of 59-23-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Talanikar, Aniket A. published the artcilePost-polymerization modifiable aromatic (co)poly(ether sulfone)s possessing pendant norbornenyl groups based upon a new bisphenol, Application of Pentaerythritol tetra(3-mercaptopropionate), the main research area is polyether sulfone preparation thiol ene modification thermal property.

A new bisphenol possessing pendant norbornenyl group viz., 4, 4′-(bicyclo (2.2.1) hept-5-en-2 yl methylene) bis (2-methoxyphenol) (BPA-NB) was synthesized by a single-step base-catalyzed condensation reaction of 5-norbornene-2-carboxaldehyde with guaiacol. NMR spectral data indicated formation of BPA-NB comprising of isomeric components. A series of (co)poly(ether sulfone)s possessing pendant norbornenyl groups was synthesized by nucleophilic aromatic substitution polycondensation of varying molar ratio of BPA-NB and bisphenol-A (BPA) with bis(4-fluorophenyl) sulfone. Inherent viscosity values and number average mol. weights of (co)poly(ether sulfone)s were in the range 0.67-1.01 dL/g and 75,400-1,16,300 g/mol, resp. indicating the formation of reasonably high mol. weight polymers. Tough, transparent, and flexible films could be cast from chloroform solutions of these (co)poly(ether sulfone)s. (Co)poly(ether sulfone)s were characterized using FT-IR, 1H NMR and 13C NMR spectroscopy, XRD, TGA and DSC anal. The formation of random copoly(ether sulfone)s was demonstrated by 13C NMR anal. The incorporation of BPA-NB into (co)poly(ether sulfone)s resulted into improvement in Tg values. BPA-NB-based (co)poly(ether sulfone)s offered possibilities for post-modifications involving either methoxyl or norbornenyl groups. A representative copoly(ether sulfone) (PSU-NB-2) possessing pendant norbornenyl groups was chem. modified via thiol-ene reaction with three representative thiol compounds, namely, 1-dodecanethiol, 2-furanmethanethiol and 2-mercaptoethanol to yield corresponding post-modified polymers in a quant. manner. Addnl., it was demonstrated that copoly(ether sulfone) possessing pendant norbornenyl groups could be used to form insoluble cross-linked gel in the presence of a multifunctional thiol cross-linker.

European Polymer Journal published new progress about Crystallinity. 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

He, Jing published the artcileUncovering the Polydisperse Characteristics of Modification Inhomogeneity for Starch during Oxidation by Sodium Periodate, Name: Pentaerythritol tetra(3-mercaptopropionate), the main research area is uncovering polydisperse inhomogeneity starch oxidation sodium periodate.

Revealing the modification inhomogeneity at the mol. level is important to understand the structure-property relationship for polysaccharide derivatives Herein, we report a study to uncover the polydisperse characteristics of inhomogeneity in both the chem. composition and mol. structure of dialdehyde starch (DA-starch) prepared by heterogeneous oxidation Based on the difference in the ratio (r) of refractive and absorbance index increments or absorbance index increments at two different wavelengths for modified and intact units, we have developed a universal theor. method to analyze the microscopic chem. composition of each fraction, which has been proved to show high accuracy (relative deviation within ±2%) by analyzing the exptl. data using quadruple-detection size-exclusion chromatog. In particular, the result has demonstrated that the degree of modification is much lower for DA-starch chains with larger mol. sizes and higher molar masses. In addition, by analyzing the polydisperse characteristics of inhomogeneity in the mol. structure, we have revealed the slight change of size-mass scaling relation; to be specific, starch macromols. are oxidized and degraded to less branched DA-starch fragments. We believe that the present study provides a fresh perspective regarding the modification inhomogeneity of polysaccharide derivatives, which is useful for practical industry applications.

Macromolecules (Washington, DC, United States) published new progress about Crystallinity. 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

Kou, Jinfang published the artcilePrecisely controlled Pd nanoclusters confined in porous organic cages for size-dependent catalytic hydrogenation, Formula: C8H14O, the main research area is palladium nanocluster preparation catalytic hydrogenation property.

The precise size-controlled formation of palladium (Pd) nanoclusters with size-dependent catalytic activity was achieved through a cage confinement strategy. In this process, three typical porous organic cages (POCs) with gradually decreasing cavity diameters were used as encapsulation carriers. A series of Pd nanoclusters-based catalysts with corresponding Pd cluster sizes of 0.73, 0.68, and 0.43 nm, resp., was effectively fabricated by confining the Pd nanoclusters in size-adjustable cavities. The obtained Pd@POCs nanocatalysts exhibited excellent crystallinity, high stability, fascinating morphol. characteristics, and superior catalytic hydrogenation performance. Especially, the size-dependent catalytic performance toward hydrogenation of 4-nitrophenol and semi-hydrogenation of alkyne compounds was demonstrated by exptl. results and theor. calculations The prepared Pd(1.71%)@FT-RCC3 catalyst with the smallest Pd cluster size of about 0.43 nm showed the best catalytic performance. This study promotes a better understanding of size-dependent catalysis and provides a new strategy for the fabrication of customized nanocatalysts.

Applied Catalysis, B: Environmental published new progress about Crystallinity. 107-54-0 belongs to class alcohols-buliding-blocks, name is 3,5-Dimethylhex-1-yn-3-ol, and the molecular formula is C8H14O, Formula: C8H14O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Viola, Arnaud published the artcileOn the importance of the crystalline surface structure on the catalytic activity and stability of tailored unsupported cobalt nanoparticles for the solvent-free acceptor-less alcohol dehydrogenation, Application of n-Octanol, the main research area is surface structure dehydrogenation catalysts cobalt nanoparticle; Acceptorless dehydrogenation of alcohols; Cobalt; Molecular hydrogen; Nanoparticles; PM-IRRAS.

Unsupported nanoparticles are now recognized as model catalysts to evaluate the intrinsic activity of metal particles, irresp. of that of the support. Co nanoparticles with different morphologies, rods, diabolos and cubes have been prepared by the polyol process and tested for the acceptorless catalytic dehydrogenation of alcs. under solvent-free conditions. Rods crystallize with the pure hcp. structure, diabolos with a mixture of hcp. and fcc. phases, while the cubes crystallize in a complex mixture of hcp., fcc. and ε-Co phases. All the cobalt particles are found to be highly selective towards the oxidation of a model secondary alc., octan-2-ol, into the corresponding ketone while no significant activity is found with octan-1-ol. Our results show the strong influence of particle shape on the activity and catalytic stability of the catalysts: Co nanorods display the highest conversion (85%), selectivity (95%) and recyclability compared to Co diabolos and Co cubes. We correlate the nanorods excellent stability with a strong binding of carboxylate ligands on their {1 1 2̅ 0} facets, preserving their crystalline superficial structure, as evidenced by phase modulation IR reflection absorption spectroscopy.

Journal of Colloid and Interface Science published new progress about Crystallinity. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Application of n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Mahmoudabadi, Samane Zarei published the artcileApplication of PC-SAFT EOS for Pharmaceuticals: Solubility, Co-Crystal, and Thermodynamic Modeling, Related Products of alcohols-buliding-blocks, the main research area is pharmaceuticals solubility cocrystal thermodn modeling PCSAFT EOS; Co-crystal; PC-SAFT EOS; Solubility; Thermodynamic; Thermodynamic modeling.

In this study, the applicability of the perturbed chain statistical associating fluid theory (PC-SAFT) was evaluated for pharmaceutical compounds For this purpose, the parameters of the PC-SAFT equation of state (EOS) were regressed by applying the exptl. solubility data of 54 pharmaceuticals in pure solvents. The reported errors for train and test data show the suitability of the PC-SAFT EOS. The applicability of the PC-SAFT EOS was explored by its prediction accuracy for the ternary system of medicine in solvent mixtures The model errors were 23 and 26% for two ternary systems of salicylic acid and lidocaine HCl in solvent mixtures of ethanol and water, resp. The co-crystal formation of salicylic acid-sulfamethazine in methanol was investigated by the PC-SAFT EOS. Finally, the reaction and crystallization sections for acetaminophen production from p-aminophenol were simulated by accompanying the PC-SAFT EOS and equilibrium assumption. The purification efficiencies for acetaminophen were obtained to be 93-98% for different temperatures

Journal of Pharmaceutical Sciences (Philadelphia, PA, United States) published new progress about Crystals (Co). 124-76-5 belongs to class alcohols-buliding-blocks, name is rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, and the molecular formula is C10H18O, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts