Category: 627-93-0

Chen, Jing published the artcilePhase inversion of pickering emulsion stabilized by adipate-functionalized SiO₂ particles, Recommanded Product: Dimethyl adipate, the publication is Gaodeng Xuexiao Huaxue Xuebao (2020), 41(1), 140-144, database is CAplus.

Phase inversion of emulsion of dialkyl adipate-water mixture stabilized by adipate-functionalized SiO₂ particles was described. Ability of different adipate to functionalize SiO₂ particles for Pickering emulsion was investigated systematically. Chain length of alkyl in adipates was found to be crucial to the property of formed emulsion. Adipate with long alkyl chain was apt to form oil-in-water emulsion, while adipate with short alkyl chain was apt to form water-in-oil emulsion. The reason of this difference was explored by analyzing the phase inversion. Adipate with short alkyl chain has strong hydrogen bonding ability with Si-OH on SiO₂ particles. Fourier transform IR (FTIR) spectra verified directly the difference of adipate archored on SiO₂ particles. Properties of emulsion prepared under pH=9 reconfirmed the proposed mechanism.

Gaodeng Xuexiao Huaxue Xuebao published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, Recommanded Product: Dimethyl adipate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Chen, Yu-Hao published the artcileSynthesis and characterization of low-temperature polyamide 6 (PA6) copolyamides used as hot melt adhesives and derived from the comonomer of novel aliphatic diamine bis(2-aminoethyl) adipamide and adipic acid, Synthetic Route of 627-93-0, the publication is International Journal of Adhesion and Adhesives (2020), 102619, database is CAplus.

A novel aliphatic PA6 copolyamide (PA6(BAEA/AA))-based hot melt adhesive was synthesized from ε-caprolactam with the organic salt of bis(2-aminoethyl) adipamide (BAEA) and adipic acid (AA), with BAEA/AA content ranges from 5 to 15 mol%. The chem. structures of BAEA diamine, BAEA/AA organic salt, PA6(BAEA/AA) copolyamides, and neat PA6 were obtained using FT-IR and ¹H NMR. Determined by the comonomer compositions, the relative viscosity and mol. weight (Mw) of the PA6(BAEA/AA) were from 2.29 to 2.74 and from 14,530 to 19,500 g mol^-1, resp. Adding the BAEA/AA structure strongly affected the crystallization behavior and thermal properties of the copolyamides. DSC results revealed that the melting temperature (T_m) of the copolyamides declined as the mole% of BAEA/AA increased in the range 5-15 mol%, and a TGA test revealed that the thermal decomposition of the copolyamides was similar to that of neat PA6. The Tm, glass transition temperature (T_g), and thermal stability (Td5%) with a BAEA/AA salt content of 10 mol% had the lowest values of 162.2, 40.3, 354.6°C, resp., while the fusion enthalpy (ΔHm) was lowest at 15 mol% (21.2 J g^-1). Most remarkably, PA6(BAEA/AA) exhibits much better mech. properties such as tensile strength (33.6-52.6 MPa) and elongation at breakage (114.7-584.5%), than the PA6 homopolymer. The peel strength of PA6 reached a maximum value of 53.4 N cm^-1 at 10 mol% of BAEA/AA salt, and this value is better than those of com. hot melt adhesives.

International Journal of Adhesion and Adhesives published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, Synthetic Route of 627-93-0.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Quaglia, Giulia published the artcileGreen Solvent Selection for Green-to-Blue Upconversion Based on TTA, Recommanded Product: Dimethyl adipate, the publication is ACS Sustainable Chemistry & Engineering (2022), 10(28), 9123-9130, database is CAplus.

Triplet-triplet annihilation photon upconversion (TTA-UC) of an organic mol. dye pair, 2,3,7,8,12,13,17,18-octaethyl-21H,23H-porphyrin platinum(II) (PtOEP) and 1,3,6,8-tetraphenylpyrene (TPPy), has been studied in a wide range of green solvents (alcs., esters, carbonates, ketones, aromatics, ethers, and dipolar aprotic). UC is important for the study of energy-transfer reactions where the solvent plays a crucial role. To design and process materials for future real applications, growing attention is directed to the use of green solvents, while UC with a few exceptions is generally studied using classic toxic media. In this contribution, the results obtained demonstrate that several green solvents can be valuable options to replace classic toxic counterparts, allowing the photon upconversion with efficient quantum yields also compared to a traditional solvent such as toluene. These results pave the way for the development of a more sustainable TTA-UC system as an effective tool to direct the design of modern green photovoltaic and photocatalytic reactions.

ACS Sustainable Chemistry & Engineering published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, Recommanded Product: Dimethyl adipate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Armada, Daniel published the artcileMiniaturized active air sampling method for the analysis of tire rubber pollutants from indoor and outdoor places, Application In Synthesis of 627-93-0, the publication is Journal of Separation Science (2021), 44(8), 1694-1705, database is CAplus and MEDLINE.

An effective, quick, and sustainable air anal. method was developed to analyze 41 volatiles and semivolatile organic compounds present in tire rubber and crumb rubber materials. The proposed method, based on active sampling using a sorbent material followed by an ultrasound assisted extraction, was developed with the aim of obtaining a fast and simple procedure to determine polycyclic aromatic hydrocarbons, plasticizers, antioxidants, and vulcanization agents in air. A small amount of sorbent (25 mg) was used, and the analytes were recovered in only 1 mL of solvent. An exptl. design was applied to study the influence of main factors such as type of sorbent and type of solvent, extraction technique (ultrasound-assisted extraction and vortex extraction), extraction time, as well as the factor interactions. Under optimal conditions, no breakthrough occurs in the studied interval (up to 4 m³). Linearity was demonstrated in a wide concentration range. Accuracy of the total sampling-extraction anal. was evaluated obtaining satisfactory recoveries as well as good precision. The method was successfully applied to different outdoor and indoor air environments, including a recycled rubber synthetic turf football pitch.

Journal of Separation Science published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, Application In Synthesis of 627-93-0.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Pospelova, Violetta published the artcileTowards efficient Cu/ZnO catalysts for ester hydrogenolysis: The role of synthesis method, Category: esters-buliding-blocks, the publication is Applied Catalysis, A: General (2021), 118320, database is CAplus.

Cu/ZnO catalysts represent an environmentally friendly alternative to Adkins catalysts used for ester hydrogenolysis. Cu/ZnO are mostly synthesized by co-precipitation (COP); however, other synthesis methods may help to obtain small highly dispersed Cu crystallites advantageous for catalyst activity. A comparative study on the effect of synthesis method on Cu/ZnO catalysts properties and activity is missing. Thus, the authors synthesized 8% Cu/ZnO catalysts by 5 methods (COP, deposition-precipitation (DP), chemisorption-hydrolysis (CH), incipient wetness (IWI) and wet impregnation (WI)), characterized and tested them in di-Me adipate hydrogenolysis. The CH-prepared catalyst was prone to Cu sintering, which impaired its performance. IWI led to large Cu nanoparticles, pore blocking and poor catalytic performance. COP and DP resulted in the smallest Cu nanoparticles (13-14 nm), largest Cu surface area (3.9-4.2 m² g^-1_cat) and sp. surface area (40-43 m² g^-1_cat) reflected in their superior catalytic activity making DP a good alternative to COP to prepare active Cu/ZnO catalysts.

Applied Catalysis, A: General published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, Category: esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Pospelova, Violetta published the artcileDoes the structure of CuZn hydroxycarbonate precursors affect the intrinsic hydrogenolysis activity of CuZn catalysts?, Category: esters-buliding-blocks, the publication is Catalysis Science & Technology (2020), 10(10), 3303-3314, database is CAplus.

A comparative study of the properties and hydrogenolysis activity of catalysts derived from single-phase CuZn precursors was carried out to elucidate the effect of the precursor structure on the catalyst activity in hydrogenolysis and to examine their potential to replace the classical CuCr catalysts. Three CuZn catalysts were prepared by co-precipitation aiming at Cu/Zn ratios of 0.7, 5.0 and 1.6 to obtain single-phase aurichalcite, zincian malachite and a mixture of both phases, resp. The catalyst precursors were calcined at temperatures of 300 and 450°, reduced in situ and tested in di-Me adipate hydrogenolysis. The properties of the precursors and catalysts were analyzed using in situ XRD, TGA-MS, TPR-H₂, N physisorption and N₂O chemisorption methods. Data, aurichalcite-derived catalysts had superior structural properties to zincian malachite-derived catalysts: smaller Cu crystallites, larger total and Cu surface areas, and stable surface areas during the experiment Consequently, aurichalcite-derived catalysts outperformed catalysts prepared from zincian malachite in the studied range of phase and elemental CuZn compositions The calculated intrinsic hydrogenolysis activity of surface Cu sites (TOF) was similar for all 3 catalysts.

Catalysis Science & Technology published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, Category: esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Kikhtyanin, Oleg published the artcileOn the origin of the transesterification reaction route during dimethyl adipate hydrogenolysis, COA of Formula: C8H14O4, the publication is Applied Catalysis, A: General (2020), 117825, database is CAplus.

Esters hydrogenolysis over CuZn catalysts was shown to be accompanied by transesterification lowering the yield of the desired alc. Here we investigate the origin of the transesterification activity by studying Cu, Zn and CuZn based catalysts in transesterification of di-Me adipate (DMA) with hexane-1,6-diol (HDO). The experiments were performed at conditions relevant for hydrogenolysis, i.e. 210°C and 10-70 bar of either N₂ or H₂ atmosphere. Although transterification was found to be catalyzed by acid impurities present in DMA, the main formation of the transesterification products was due to the ZnO phase in the studied catalysts. In contrast, Cu or CuO phase were virtually inactive in transesterification. Moreover, it was shown that the reduced Cu-ZnO catalyst was stable under reaction conditions, whereas its oxide form CuO-ZnO underwent leaching. The obtained catalytic data also evidenced that the transesterification products were important reaction intermediates in the formation of HDO.

Applied Catalysis, A: General published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, COA of Formula: C8H14O4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Harahap, F. S. published the artcileComparison of the chemical compounds of malacca bark and malacca fruit (Phyllanthus emblica) with gas chromatography-mass spectrometer (GC-MS), SDS of cas: 627-93-0, the publication is Journal of Physics: Conference Series (2020), 072011, database is CAplus.

Malacca (Phyllanthus emblica) has a chem. that contains acids that are used to treat cancer. This research was aimed to compare the content of chem. compounds malacca stem with malacca fruit (Phyllanthus emblica) with multilevel extraction methods. Extraction of the stem and Malaca fruit was carried out by maceration and socletation using non-polar nhexane, semi-polar acetone, and polar methanol as solvent. Non-polar components were separated by the soxhlet extraction method using n-hexane solvent. The residue from the soxhlet extraction was then macerated using acetone solvent. Furthermore, the polar component was separated by maceration extraction method using ethanol as a solvent. The ethanol extract was then identified by chem. compounds with Gas Chromatog.-Mass Spectrometer (GC-MS). Chem. compounds identified with GC-MS showed extracts on stem balakka contain the compound succinic acid di-Me ester, di-Me pentanedioate, and di-Me adipate, while extracts on malacca fruit contain the compound succinic acid di-Me ester, di-Me pentanedioate, di-Me adipate, Me adipate, 1,3-Dioxolane-4-methanol.

Journal of Physics: Conference Series published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, SDS of cas: 627-93-0.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Celeiro, Maria published the artcileHazardous compounds in recreational and urban recycled surfaces made from crumb rubber. Compliance with current regulation and future perspectives, Quality Control of 627-93-0, the publication is Science of the Total Environment (2021), 755(Part_1), 142566, database is CAplus and MEDLINE.

Crumb rubber obtained from scrap tires is greatly employed for the construction of different facilities for sport, recreational and other uses. However, in recent years the concern about their safety and the related adult and children exposure to these surfaces is growing. This study aims a thorough chem. characterization encompassing 42 hazardous compounds, including polycyclic aromatic hydrocarbons (PAHs), phthalates, adipates, antioxidants and vulcanization agents in a wide range of crumb rubber from different surfaces. For the extraction of the target compounds, a method based on ultrasound-assisted extraction followed by gas chromatog.-tandem mass spectrometry (UAE-GC-MS/MS) was validated. Forty crumb rubber samples coming from synthetic turf football pitches, outdoor and indoor playgrounds, urban pavements, com. tiles and granulates, and scrap tires, were analyzed. In addition, green alternative materials, such as sand and artificial turf based on cork granulate infill were included to compare the levels of the target compounds with those of crumb rubber. Most of the analyzed recycled surfaces meet the recent limits proposed by the European Commission for rubber granulates and mulches, although they exceed in several cases the maximum levels allowed for rubber consumer products. Besides, most of the other target compounds, including several of them considered as endocrine disruptors, were detected in the analyzed samples, reaching ppm concentrations

Science of the Total Environment published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, Quality Control of 627-93-0.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Celeiro, Maria published the artcileEvaluation of chemicals of environmental concern in crumb rubber and water leachates from several types of synthetic turf football pitches, Application of Dimethyl adipate, the publication is Chemosphere (2021), 128610, database is CAplus and MEDLINE.

Nowadays concern exists about the safety for both football players and the environment of recycled tire rubber used as infill in synthetic turf football pitches. In this study 40 target compounds, including polycyclic aromatic hydrocarbons (PAHs), plasticizers, antioxidants and vulcanization agents were determined in 50 synthetic football pitches of diverse characteristics to estimate environmental risks. This is the first study of crumb rubber sport facilities in Portugal. Analyses were performed by ultrasound-assisted extraction followed by gas chromatog.-tandem mass spectrometry (UAE-GC-MS/MS). To evaluate the transfer of the target chems. from the crumb rubber to the runoff water, water leachates collected from several football pitches were analyzed by solid-phase microextraction (SPME-GC-MS/MS). In addition, lab-scale runoff simulation experiments were performed to assess whether a persistent inflow of the target compounds from the football pitches into the runoff water wcould exist. Results revealed the presence of most of the target PAHs in crumb rubber at total concentrations up to 57μg g-1, next to a high number of plasticizers and vulcanization agents. Runoff water collected from the football pitches contained up to 13 PAHs as well as other chems. of environmental concern. In addition, continuous leaching of chems. from the crumb rubber to the surrounding water was demonstrated. The transfer of target chems. into the runoff water poses a potential risk for the aquatic environment.

Chemosphere published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, Application of Dimethyl adipate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics