Category: 627-93-0

Moinuddin, Ovase published the artcileStudy on thermal storage properties of microencapsulated organic ester as phase change material for cooling application, Application of Dimethyl adipate, the publication is International Journal of Environmental Analytical Chemistry (2021), 101(12), 1662-1671, database is CAplus.

The phase change materials (PCMs) are latent thermal energy storage materials to store and release energy in the form of latent heat with a change in internal energy. The microencapsulation technique overcomes the limitations faced by the PCMs during energy storage and release. In this study, the new ester-based non-paraffin PCM was microencapsulated into an organic shell using in-situ polymerization technique. The as-prepared MPCMs was characterised using the field emission electron microscope (FESEM), fourier transform IR spectroscopy (FTIR), differential scanning calorimetry (DSC) and thermogravimetric anal. (TGA) techniques. The results show that the MPCM characterised using FESEM has exhibited a good morphol. The chem. stability studies carried using FTIR spectroscopy also confirmed the formation of microcapsules was only by phys. interaction. The DSC test results also signify that microcapsules have a latent heat of enthalpy of 65.32 kJ/kg, with onset melting temperature of 8.57°C. Thus, this ensures the MPCM to be considered as a potential candidate for the CTES application.

International Journal of Environmental Analytical Chemistry 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

Sisti, Laura published the artcileChain extender effect of 3-(4-hydroxyphenyl)propionic acid/layered double hydroxide in biopolyesters containing the succinate moiety, Synthetic Route of 627-93-0, the publication is New Journal of Chemistry (2020), 44(24), 10127-10136, database is CAplus.

The 3-(4-hydroxyphenyl)propionic acid intercalated in Mg2Al/layered double hydroxide has been used as a filler in biopolyesters containing the succinate moiety, such as poly(propylene succinate) (PPS), poly(butylene succinate-co-butylene adipate) (PBSA) and poly(butylene succinate) (PBS), with the aim of inducing an effect similar to that of an increment of the mol. weight of the matrixes. The composites (1, 5 and 10 weight% of filler) have been prepared by a simple melt blending procedure. X-ray diffraction anal. revealed the presence of intercalated structures in the composites. From melt rheol. measurements, a chain extender effect of the filler, towards PBS, PPS and to some extent PBSA, was evident and proportional to the composition, producing a reinforcing role of the filler towards the polymeric chains. Moreover, no gel-like structure was produced. Such findings can be useful in widening the processing window of biopolyesters, in order to design multifunctional materials with adapted properties.

New Journal of Chemistry 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 C25H23NO4, Synthetic Route of 627-93-0.

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

Liu, Yahui published the artcileNon-targeted identification of unknown chemical hazardous substances in infant teether toys by gas chromatography-Orbitrap high resolution mass spectrometry, Recommanded Product: Dimethyl adipate, the publication is Ecotoxicology and Environmental Safety (2021), 112676, database is CAplus and MEDLINE.

Chem. hazardous substances in teethers may migrate into infant’s body through oral exposure, resulting in a potential health risk. In recent years, researchers have performed a series of studies for detecting target chems. in teethers and other toys, but the presence of unknown chems. has not been systematically investigated yet. This paper reports the non-targeted identification of unknown chem. hazards that may have migrated from teethers to infants based on gas chromatog.-Orbitrap high resolution mass spectrometry. In view of the difficulties that may be encountered in the qual. anal. of substances, several typical cases and the corresponding reliable solutions are given from the perspective of comprehensive score and retention index, isotope-aided qual. anal., chem. ionization identification formula, and fragment ion detail comparison for distinguishing isomers. Finally, 28 substances are identified in 10 teether samples. Among them, phenol, N-methylaniline, 1,6-dioxacyclododecane-7,12-dione and cyclohexanone have higher detection rates. This study not only has valuable reference for the identification of unknown substances, but also has pos. guiding role in monitoring potential chem. hazards in toys and promoting the safety of products.

Ecotoxicology and Environmental Safety 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

Zhi, Chunli published the artcileDetermination and correlation of ternary isobaric vapour-liquid equilibrium data of (dimethyl succinate + dimethyl glutarate + dimethyl adipate) at 2, 5 and 8 kPa, COA of Formula: C8H14O4, the publication is Journal of Chemical Thermodynamics (2020), 106047, database is CAplus.

Isobaric vapor-liquid equilibrium data of {dimethyl succinate (DMS) + di-Me glutarate (DMG) + di-Me adipate (DMA)} ternary system was measured at 2 kPa, 5 kPa and 8 kPa with a dynamic recirculating apparatus and the temperature ranged from 364.46 to 403.55 K. The exptl. data was correlated with NRTL, Wilson and Uniquac models. The results showed that the maximum value of the root mean square deviation of the vapor phase mole fraction of the ternary system correlated by the three models is 0.0083, 0.0076 and 0.0084, resp. The vapor-liquid equilibrium data of the ternary system was predicted by the interaction parameters of NRTL, Wilson and the Uniquac models in the literature. The results showed that the maximum value of the root mean square deviation of the vapor phase mole fraction of the ternary system predicted by the three models is 0.0547, 0.0471, and 0.0498, resp. The deviation between the exptl. value and the regression value or the predicted value was small, and both met the needs of design calculation of the engineering separation The results obtained from the regression of exptl. values are significantly better.

Journal of Chemical Thermodynamics 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 C8H19NO, COA of Formula: C8H14O4.

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

Tang, Shuqin published the artcilePrenatal Exposure to Emerging Plasticizers and Synthetic Antioxidants and Their Potency to Cross Human Placenta, Application of Dimethyl adipate, the publication is Environmental Science & Technology (2022), 56(12), 8507-8517, database is CAplus and MEDLINE.

Gestational exposure to environmental chems. and subsequent permeation through the placental barrier represents potential health risks to both pregnant women and their fetuses. In the present study, we explored prenatal exposure to a suite of 46 emerging plasticizers and synthetic antioxidants (including five transformation products of 2,6-di-tert-butyl-4-hydroxytoluene, BHT) and their potency to cross human placenta based on a total of 109 maternal and cord serum pairs. Most of these chems. have rarely or never been investigated for prenatal exposure and associated health risks. Eleven of them exhibited detection frequency greater than 50% in maternal blood, including di-Bu fumarate (DBF), 2,6-di-tert-butylphenol (2,4-DtBP), 1,3-diphenylguanidine (DPG), methyl-2-(benzoyl)benzoate (MBB), tri-Et citrate (TEC), BHT, and its five metabolites, with a median concentration from 0.05 to 3.1 ng/mL. The transplacental transfer efficiency (TTE) was determined for selected chems. with valid measurements in more than 10 maternal/cord blood pairs, and the mean TTEs exhibited a large variation (i.e., 0.29-2.14) between chems. The determined TTEs for some of the target chems. were comparable to the predicted values by our previously proposed models developed from mol. descriptors, indicating that their transplacental transfer potency could be largely affected by physicochem. properties and mol. structures. However, addnl. biol. and physiol. factors may influence the potency of environmental chems. to cross human placenta. Overall, our study findings raise concern on human exposure to an increasing list of plastic additives during critical life stages (e.g., pregnancy) and potential health risks.

Environmental 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 C15H21BO3, Application of Dimethyl adipate.

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

Jin, Chunlian published the artcileGas chromatography-mass spectrometry analysis of natural products in Gypsophila paniculata, COA of Formula: C8H14O4, the publication is HortScience (2021), 56(10), 1195-1198, database is CAplus.

Gypsophila paniculata is an ornamental crop with medicinal value. To date, limited information has been reported about the natural products in G. paniculata to explain its medicinal function. The current study reports the natural products found in G. paniculata stem for the first time. Thirty-three compounds were isolated from the extract of G. paniculata stem and identified by gas chromatog.-mass spectrometry, 10 of which have contents >2%. These were 2-O-methyl-D-mannopyranose (37.4706%), glycerol (12.5669%), two tetratetracontane isomer (7.6523 + 3.5145%), tetrahygro-4-pyranol (5.3254%), 1,6-anhydro-beta-d-glucopyranos (4.7507%), palmitic acid (4.1848%), 4-hydroxy-3-methoxystyrene (3.7439%), methyl-octadeca-9,12-dienoate (2.7490%), and 2-deoxy-D-galactose (2.6193%). Another bioactive compound, condrillasterol, was identified with 1.3384% content. We also reported that G. paniculata possesses antioxidant activity possibly associated with the presence of a phenolic chem. 4-hydroxy-3-methoxystyrene. Our data collectively demonstrate that G. paniculata contains some bioactive compounds with high contents and antioxidants, consistent with its role as a medicinal herb.

HortScience 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

Van Lijsebetten, Filip published the artcileReprocessing of Covalent Adaptable Polyamide Networks through Internal Catalysis and Ring-Size Effects, Name: Dimethyl adipate, the publication is Journal of the American Chemical Society (2021), 143(38), 15834-15844, database is CAplus and MEDLINE.

Here, we report the introduction of internally catalyzed amide bonds to obtain covalent adaptable polyamide networks that rely on the dissociation equilibrium between dicarboxamides and imides. While amide bonds are usually considered to be robust and thermally stable, the present study shows that their dynamic character can be activated by a smart choice of available building blocks without the addition of any external catalyst or other additives. Hence, a range of polyamide-based dynamic networks with variable mech. and viscoelastic properties were obtained in a systematic study, using a straightforward curing process of dibasic ester and amine compounds Since the dissociation process involves a cyclic imide formation, the correlation between ring size and the thermomech. viscosity profile was studied for five- to seven-membered ring intermediates, depending on the chosen dibasic ester monomer. This resulted in a marked temperature response with activation energies in the range of 116-197 kJ mol^-1, yielding a sharp transition between elastic and viscous behavior. Moreover, the ease and versatility of this chem. platform were demonstrated by selecting a variety of amines, resulting in densely cross-linked dynamic networks with T_g values ranging from -20 to 110°C. With this approach, it is possible to design amorphous polyamide networks with an acute temperature response, allowing for good reprocessability and, simultaneously, high resistance to irreversible deformation at elevated temperatures

Journal of the American Chemical Society 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 C12H13F2N3O4S, Name: Dimethyl adipate.

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

Flores, Antonia published the artcileDevelopment of a headspace-solid phase micro extraction method for the analysis of volatile and semi-volatile organic compounds from polyurethane resins for leather finishing, Category: esters-buliding-blocks, the publication is Journal of the American Leather Chemists Association (2021), 116(8), 290-297, database is CAplus.

Volatile organic compounds (VOCs) and Semi-Volatile Organic Compounds (SVOCs) arise from the chems. used in the various stages of the leather manufacturing process. An important aim of the tanning industry is to minimize or eliminate VOCs and SVOCs, without lowering the quality of leather. This paper shows the development of a new headspace-solid phase micro extraction coupled with gas chromatog.-mass spectrometry (HS-SPME/GC-MS) method for the identification of VOCs and SVOCs emitted by newly designed polymers for the leather finishing operation. These new polymers are polyurethane resins designed to reduce the VOC and SVOC concentration This method enables a simple and fast determination of the qual. and semi-quant. content of VOCs and SVOCs in polyurethane-type finishing resins. The chems. that are of concern in this paper are the following: Dipropylene glycol Monomethyl Ether (DPGME), DBE-3 (a mixture of dibasic esters) and Triethylamine (TEA). The test conditions that have been determined to carry out the HS-SPME assay are the following: incubation time (2 h), extraction temperature and time (40°C; 5 min) and the desorption conditions (280°C, 50 s). Ten samples of laboratory scale resins were tested by HS-SPME followed by gas chromatog. (GC-MS). DPGME and DBE-3 (a mixture of di-Me adipate, di-Me glutarate and di-Me succinate) have been identified effectively. The compounds are identified by a quant. method using external calibration curves for the target compounds The technique is not effective to determine the TEA compound, since the chromatograms shown poor resolution peaks for the standard

Journal of the American Leather Chemists Association 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

Gawlig, Christopher published the artcileOne-Pot Conversion of Cyclohexane to Adipic Acid Using a μ₄-Oxido-Copper Cluster as Catalyst Together with Hydrogen Peroxide, Related Products of esters-buliding-blocks, the publication is European Journal of Inorganic Chemistry (2020), 2020(3), 248-252, database is CAplus.

The production of Nylon-6.6 is one of the largest scale syntheses in industrial chem. The standard procedure is based on an energy consuming low-level conversion of cyclohexane to yield adipic acid in two steps that is converted to Nylon-6.6 in a sep. step. Therefore, there is a strong intent to optimize the synthetic route in an economic and ecol. matter. In this work, we present a one-pot oxygenation of cyclohexane with hydrogen peroxide and a μ₄-oxido-copper cluster catalyst to yield dicarboxylic acids with adipic acid as the main product.

European Journal of Inorganic Chemistry 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, Related Products of esters-buliding-blocks.

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

Jang, Yoon-Jung published the artcileDuctile gas barrier poly(ester-amide)s derived from glycolide, COA of Formula: C8H14O4, the publication is Polymer Chemistry (2022), 13(26), 3882-3891, database is CAplus.

Sustainable gas barrier materials, such as polyglycolide, poly(L-lactide), and poly(ethylene 2,5-furandicarboxylate) are important alternatives to traditional plastics used for packaging where low gas permeability is beneficial. However, high degrees of crystallinity in these materials can lead to undesirably low material toughness. We report poly(ester-amide)s derived from glycolide and diamines exhibiting both high toughness and desirable gas barrier properties. These sustainable poly(ester-amide)s were synthesized from glycolide-derived diamidodiols and diacids. To understand the structure-property relationships of the poly(ester-amide)s, polymers with different numbers of methylene groups were compared with respect to thermal, mech., and gas barrier properties. As the number of methylene groups between ester groups increased in the even-numbered series, the melting temperature decreased and oxygen permeability increased. We also found that these polymers are readily degradable under neutral, acidic, and basic hydrolytic conditions. These high-performance poly(ester-amide)s are promising sustainable alternatives to conventional gas barrier materials.

Polymer Chemistry 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