Category: 31570-04-4

Tochacek, Jiri published the artcileThe chances of thermooxidation stabilization of poly(3-hydroxybutyrate) during processing-A critical evaluation, Formula: C42H63O3P, the publication is Journal of Applied Polymer Science (2021), 138(27), 50647, database is CAplus.

The performance of a series of thermooxidn. stabilizers was investigated in poly(3-hydroxybutyrate) (PHB) during processing by multiple extrusion at 190°C. The issue was to find out if PHB may be processing stabilized or not. Phenols of different steric hindrance, phosphites, amine oxide, hydroxylamine, lactone, hindered amine and carbodiimide were tested as potential stabilizers and their efficiencies compared with non-stabilized polymer as a reference Multiple extrusion data was evaluated using the processing degradation index (PDI) formerly designed for polypropylene. Changes in mol. weight were monitored as well. The results have shown that none of the stabilizing structures, currently successfully used in other polymers, have the ability to protect PHB. This indirectly implies that no radical chain scission takes place during PHB processing, i.e. no thermooxidn. takes place. Moreover, nearly all of the tested structures act as prodegradants in PHB, some of them very strong. The strongest ones contain P or N atoms with asym. free electron pairs in their mols. that evidently accelerate the main degradation mechanism of PHB-thermally induced cis-elimination.

Journal of Applied Polymer Science published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C2H3N3, Formula: C42H63O3P.

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

Zaarour, Rania Faouzi published the artcileWaterpipe smoke condensate influences epithelial to mesenchymal transition and interferes with the cytotoxic immune response in non-small cell lung cancer cell lines, Category: esters-buliding-blocks, the publication is Oncology Reports (2021), 45(3), 879-890, database is CAplus and MEDLINE.

Waterpipe tobacco smoking (WPS) continues to spread globally and presents serious health hazards. The aim of the present study was to investigate the effects of treatment with WPS condensate (WPSC) on lung cell proliferation and plasticity as well as tumor cell recognition and killing by natural killer (NK) cells using cytotoxicity assays. The results indicated that exposure of normal and cancer lung cell lines to WPSC resulted in a decrease in their in vitro growth in a dose-dependent manner and it induced tumor senescence. In addition, WPSC selectively caused DNA damage as revealed by an increase in γH2AX and 53BP1 in tumor lung cells. To gain further insight into the mol. mechanisms altered by WPSC, we conducted a global comprehensive transcriptome anal. of WPSC-treated tumor cells. Data anal. identified an expression profile of genes that best distinguished treated and non-treated cells involving several pathways. Of these pathways, we focused on those involved in epithelial to mesenchymal transition (EMT) and stemness. Results showed that WPSC induced an increase in SNAI2 expression associated with EMT, ACTA2 and SERPINE2 were involved in invasion and CD44 was associated with stemness. Furthermore, WPSC exposure increased the expression of inflammatory response genes including CASP1, IL1B, IL6 and CCL2. While immune synapse formation between NK and WPSC-treated lung cancer target cells was not affected, the capacity of NK cells to kill these target cells was reduced. The data reported in the present study are, to the best of our knowledge, the first in vitro demonstration of WPSC effects on lung cellular parameters providing evidence of its potential involvement in tumor physiol. and development.

Oncology Reports published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C3H6O2, Category: esters-buliding-blocks.

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

Sapozhnikova, Yelena published the artcileScreening of chemicals migrating from plastic food contact materials for oven and microwave applications by liquid and gas chromatography – Orbitrap mass spectrometry, Application of Tris(2,4-di-tert-butylphenyl) phosphite, the publication is Journal of Chromatography A (2021), 462261, database is CAplus and MEDLINE.

Contamination of food with chems. migrating from food contact materials (FCMs) is an important area of food safety. This study was aimed to investigate migration of chems. from plastic FCMs used for microwave and conventional oven heating. Migration tests were conducted for samples of microwave trays, microwave oven bags, and oven bags. GC- and LC-Orbitrap mass spectrometry (MS) was used for non-targeted screening and identification of chems. with mass error <5 ppm. A non-targeted identification approach was validated with isotopically labeled chems. to establish acceptable criteria for identification of migrated compounds A total of 74 migrated compounds were tentatively identified: 24 chems. by GC-Orbitrap MS with electron ionization (EI), plus 35 and 19 by LC-Orbitrap MS electrospray ionization (ESI) with pos. and neg. polarities, resp. Four migrated chems. were identified by more than one instrumental anal. Both intentionally added substances (IAS), i.e. additives used in the production of polymeric materials and plastics, and non-intentionally added substances (NIAS), i.e. derivatives and degradation/oxidation products of IAS, were identified among the migrated chems. The levels of 25 migrated chems. were significantly different (p < 0.05) between microwave treatments and conventional oven treatments, where 20 migrants had higher levels for microwave compared with 5 for conventional oven treatments. For several identified chems., no previous reports on their migration from FCMs were found.

Journal of Chromatography A published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, Application of Tris(2,4-di-tert-butylphenyl) phosphite.

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

Moonprasith, Nantina published the artcileViscosity decrease by interfacial slippage between immiscible polymers, Recommanded Product: Tris(2,4-di-tert-butylphenyl) phosphite, the publication is Polymer Engineering & Science (2021), 61(4), 1096-1103, database is CAplus.

The rheol. behavior under pressure-driven shear flow was studied using binary blends with a sea-island structure. The addition of a low-viscosity dispersion having a high interfacial tension with the continuous phase greatly reduces the shear viscosity, for example, the addition of atactic polystyrene (PS) with a low viscosity to isotactic polypropylene (PP) and the addition of PP with a low viscosity to PS. The interfacial slippage occurs because of the poor adhesive strength with the enlarged interfacial area and is responsible for the viscosity decrease. When the dispersion has a similar viscosity to the continuous phase, the viscosity decrease is barely detected. This is because the deformation of dispersed droplets is restricted, which creates a small interfacial area. The interfacial tension between the continuous and dispersed phases plays a crucial role on the shear viscosity. In the case of PP, the addition of linear low-d. polyethylene with a relatively low interfacial tension to PP has almost no impact on the shear viscosity. This is despite the polyethylene having a low viscosity.

Polymer Engineering & Science published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, Recommanded Product: Tris(2,4-di-tert-butylphenyl) phosphite.

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

Mizukado, Junji published the artcileChemical analysis of polymer degradation, SDS of cas: 31570-04-4, the publication is Seikei Kako (2021), 33(8), 262-265, database is CAplus.

Deterioration due to heat of PP, which is discussed in this paper, especially when it is deteriorated by accelerated deterioration test, is affected by the structure of PP itself, but it is greatly affected by additives such as antioxidants and Many, the internal cause is mainly the type and concentration of the antioxidant, and the external cause is heat. However, when analyzing the deterioration of market-recovered products, it is necessary to consider various possibilities including the internal cause because the external cause is not clear. In addition, since the case where durability depends on antioxidants often applies to other polymers, the author like to consider this PP as one subject.

Seikei Kako published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, SDS of cas: 31570-04-4.

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

Gloger, Dietrich published the artcileLong-Chain Branched Polypropylene: Effects of Chain Architecture, Melt Structure, Shear Modification, and Solution Treatment on Melt Relaxation Dynamics, Application In Synthesis of 31570-04-4, the publication is Macromolecules (Washington, DC, United States) (2022), 55(7), 2588-2608, database is CAplus.

Polymers with large mol. structures like long-chain branched polypropylene, LCB PP, are prone to a disentanglement phenomenon known as shear-modification. Extrusion decreases melt viscosity and elasticity, restored by prolonged melt heating (annealing) or a solution treatment. Here, for LCB PPs and blends with linear isotactic polypropylene, L PP, we study chain architecture, branch content, linear viscoelasticity, the changes caused by shear-modification and recovery thereof in solution Our LCB PPs are crosslinking products of a linear precursor. Architecture and molar mass distribution of the LCB PPs followed random branching according to percolation theory, with deviations explained by a non-negligible fraction of linear chains. A solvent-insoluble fraction, gel, was indicative of large percolation clusters. Shear modification of our LCB PPs was not fully reversible, due to breakage of chains in the high molar mass tail or of even larger structures (percolation clusters) not detected by gel permeation chromatog. We also propose shear modification of LCB PP deforms (1) chain conformations, (2) perturbs the long-range melt order created by the crosslinking reaction and (3) affects mixing quality between linear and branched chains. In solution, we propose recovery mechanisms are chain swelling into spherical conformations and a redistribution of linear and branched chains. Our work shows that the understanding shear modification of branched polymers requires knowledge of content and architecture of all chain species, their mol. mixing quality and consequently their mutually dependent relaxation mechanisms.

Macromolecules (Washington, DC, United States) published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, Application In Synthesis of 31570-04-4.

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

Kumari, Nalinee published the artcileQualitative assessment of bioactive compounds of actinomycetes AIA25a isolate using HPTLC and GCMS technique, COA of Formula: C42H63O3P, the publication is Indian Journal of Chemical Technology (2022), 29(3), 303-310, database is CAplus.

In the present study AIA25a strain has been isolated from the rhizospheric soil actinomycetes from selected locations of Rajasthan. Antimicrobial activity test of AIA25a against bacterial strains S. aureus (MTCC 3160), P. aeruginosa (MTCC 1688), P. mirabilis (ITCC 425) has been carried out. A good activity is shown by chloroform crude extract against P. aeruginosa (IZ = 13.4±0.3mm), moderate activity (IZ = 11.1±0.1) is shown against S. aureus and no activity is observed against P. mirabilis strain. Different compounds isolation is executed with the help of chloroform solvent. Using GC-MS identification has been carried out for compounds present in AIA25a strain followed by partial purification of compounds With the help of HPTLC method partial purification of compounds has been achieved and followed by GC-MS anal. for identification of separated compounds The Bioautog. technique has been applied for the detection of antimicrobial spot of partial purified compounds of crude extract of AIA25a isolate. Results of this study show the presence of various compounds in the rhizospheric soil of Rajasthan.

Indian Journal of Chemical Technology published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, COA of Formula: C42H63O3P.

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

Jiang, Tiankai published the artcileThe effect of two different UV absorbers combined with antioxidants on UV resistance of HDPE, Category: esters-buliding-blocks, the publication is Polymers for Advanced Technologies (2021), 32(12), 4915-4925, database is CAplus.

In order to improve the aging resistance of HDPE, antioxidants (Irganox1010 and Irgafos168) are combined with UV absorber (UV-326 or UV-531). Analyses of UV-visible (UV-vis) and Fourier transform IR spectroscopy show that UV-326 has a better capacity of UV absorbance, but easier to migrate to the HDPE surface due to the bigger difference of solubility parameter with HDPE than UV-531. The mech. property indicates a better synergistic effect between UV-531 and antioxidants. With the single addition of antioxidant, the mech. property sharply decreased to low level during irradiation for 200 h. With single addition of UV absorber, the elongation at break of the sample can still be maintained at about 700% until irradiation for 600 h. When two different UV absorbers are used in combination with antioxidants, HDPE with UV-326 maintains high mech. property when irradiated for 1200 h, while the samples containing UV-531 still maintain good mech. property when irradiated for 1600 h.

Polymers for Advanced Technologies published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, Category: esters-buliding-blocks.

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

Charfeddine, Ilhem published the artcileSurface tension and interfacial tension of polyolefins and polyolefin blends, Quality Control of 31570-04-4, the publication is Journal of Applied Polymer Science (2022), 139(14), 51885, database is CAplus.

This paper focuses on the calculation of the interfacial tension of two systems: low-d. polyethylene with isotactic polypropylene and high-d. polyethylene with syndiotactic polypropylene. For this, three methods to measure the interfacial tension are compared: the use of Palierne’s model, and Gramespacher and Meissner’s model, both based on addnl. elasticity or long relaxation times brought by shape recovery of dispersed phase, and ab-initio calculation, which requires the knowledge of the surface tension of the neat polymer measured at the same temperature For that, a database collected from the literature is built in the first section of this paper, whether for the studied systems or for other systems of various olefinic homopolymers or copolymers with polypropylene. The results show the effectiveness of the Gramespacher and Meissner’s model to calculate the interfacial tension of the studied systems for which the results were in agreement with ab-initio calculation and Palierne’s model. Extension of the ab-initio calculation to olefinic copolymers was proposed.

Journal of Applied Polymer Science published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, Quality Control of 31570-04-4.

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

Heidari, Ali Akbar published the artcileThin film composite solvent resistant nanofiltration membrane via interfacial polymerization on an engineered polyethylene membrane support coated with polydopamine, Quality Control of 31570-04-4, the publication is Journal of Membrane Science (2021), 119406, database is CAplus.

In this work, a thin film composite (TFC) membrane possessing outstanding properties for solvent resistant nanofiltration (SRNF) membrane application was fabricated. For this purpose, high d. polyethylene (HDPE)-polystyrene (PS)-styrene-ethylene-butylene-styrene (SEBS) blends were fabricated in the first step with different compositions by using an internal mixer machine and hot press technique, resp. Then, the fabrication of a novel HDPE support was conducted by etching the PS phase out of the as-prepared HDPE-PS-SEBS blends through solvent extraction method (Etched HDPE). In the next step, the prepared Etched HDPE membrane support was dipped in a dopamine solution, by which auto-oxidization and self-polymerization of dopamine monomers onto the Etched HDPE membrane supports surface was done, leading to the formation of an ultrathin polydopamine (PDA) layer with a strong chem. binding force. By the formation of the polydopamine layer, hydrophilic functional groups were introduced onto the HDPE membranes surface_, causing the attraction of m-phenylenediamine (MPD) monomers onto the membrane surface and the formation of a uniform ultrathin PA top layer. Finally, the TFC layer was formed on the as-prepared membrane supports with different m-phenylenediamine and trimesoyl chloride (TMC) concentrations The performance and properties of the prepared TFC-PE@PDA membrane was investigated for rejection of different dyes including Reactive Red, Direct Yellow, Methyl blue, Rhodamine B, Crystal Violet and Methyl orange in SRNF applications, based on which outstanding separation performance (dye rejections of 99.8, 99.5, 99.2, 98.5, 96.8 and 94.4 for RR, DY, MB, RDB, CV and MO, resp., under the pressure of 9 bar), methanol flux as high as 1.8 L/m² h bar along with excellent methanol flux as high as 3.7 L/m² h bar after DMF activation, were obtained. Furthermore, it is noteworthy that an outstanding solvent resistance (dye rejections of more than 99.2, 98.8, 98.5, 97.9, 96 and 93.8% for RR, DY, MB, RDB, CV and MO, resp., being dipped in DMF at 70°C for 90 days) was also shown by the prepared TFC-PE@PDA membrane.

Journal of Membrane Science published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, Quality Control of 31570-04-4.

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