Author: tianli

Zhang, Ting published the artcileEffect of TIPA on mechanical properties and hydration properties of cement-lithium slag system, Recommanded Product: Triisopropanolamine, the publication is Journal of Environmental Management (2020), 111274, database is CAplus and MEDLINE.

Effect of triisopropanolamine (TIPA) on compressive strength and hydration properties of cement-lithium slag (LS, 30%) paste was studied. The results demonstrated that the addition of TIPA is advantageous for compressive strength at 7 d, 28 d and 60 d. The reason was related to the pore complexity and hydration process of cement and LS. TIPA reduced the total porosity, and increased the fractal dimension, making the pore structure more complicated. In addition, TIPA promoted the pozzolanic reaction of LS and the hydration of cement, expediting the formation of C-S(A)-H gel. TIPA accelerated the dissolution of aluminate ions, silicate ions and ferric ions in the pore solution, thereby accelerating the pozzolanic reaction of LS. During the hydration of cement-LS paste, TIPA facilitated the conversion of ettringite to the AFm-like phase and produced more C-A-S-H gel by promoting the dissolution of aluminate ions.

Journal of Environmental Management published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C15H20BNO2, Recommanded Product: Triisopropanolamine.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Wang, Jie published the artcileHydration and mechanical properties of cement-marble powder system incorporating triisopropanolamine, Related Products of alcohols-buliding-blocks, the publication is Construction and Building Materials (2021), 266(Part_B), 121068, database is CAplus.

This study aimed to improve the mech. properties of cement-marble powder (MP) mortar by incorporating triisopropanolamine (TIPA) to promote the optimal utilization of marble waste. In this research, the workability, compressive strength, capillary water absorption, hydration process and microstructure of cement-MP system were investigated. From the exptl. results, it was found that the incorporation of TIPA enhanced the mech. strength of cement-MP mortar. Moreover, the capillary water absorption of cement-MP mortar was improved when the TIPA dosage exceeded 0.06%. The enhancement of these properties was mainly due to the acceleration effect of TIPA on the cement-MP system hydration process, despite the fact that its air entraining effect would have a neg. effect. Incorporating TIPA in cement-MP system accelerated the dissolution of Fe3+ ions in ferrite phase to promote the hydration of cement, which certainly facilitated the consumption of SO2-4 ions, thus promoting the formation of calcium aluminocarbonate. Addnl., no obvious difference was observed in the workability and setting characteristics between cement-MP system with and without TIPA.

Construction and Building Materials published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C5H13Cl2N, Related Products of alcohols-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Liu, Xiaohai published the artcileImprovement in chloride immobilization of cement-metakaolin system by triisopropanolamine, Product Details of C9H21NO3, the publication is Applied Clay Science (2020), 105656, database is CAplus.

Metakaolin (MK) is a widely used admixture in chloride immobilization which is conducive to the durability of reinforced concrete. In this study, triisopropanolamine (TIPA) was added into cement-MK system to improve the chloride immobilization by expediting the pozzolanic reaction of MK. The effect of TIPA on hydration of binder composed of 90% Portland cement and 10% MK was investigated, and the hydration behavior was characterized by thermogravimetric anal., X-ray diffraction, NMR spectroscopy, and mercury intrusion porosimetry, based on the evaluation of pozzolanic reaction of MK by ion dissolution Results indicated that TIPA promoted the hydration of both MK and cement, and chloride immobilization was also improved. The mechanism for the improvement was involved in three aspects: a) TIPA facilitated the dissolution of aluminum from MK to obtain more chloroaluminate salts, strengthening chem. binding; b) TIPA accelerated hydration of cement and MK for more C-S-H gel, conducive to the phys. adsorption; c) TIPA increased the amount of hydrates to refine the pore structure, hindering the migration of chloride ion. This investigation provided one new method for improving the pozzolanic reaction of MK to enhance chloride immobilization of cement-MK system.

Applied Clay Science published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C9H21NO3, Product Details of C9H21NO3.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Li, Chunbao published the artcileEffect of triisopropanolamine on chloride binding of cement paste with ground-granulated blast furnace slag, Category: alcohols-buliding-blocks, the publication is Construction and Building Materials (2020), 119494, database is CAplus.

Chloride was one of important factors resulting in steel bar corrosion in reinforced concrete when using sea resources. In this paper, an attempt to promote the chloride binding capacity of the cement-ground-granulated blast furnace slag (GGBS) system was made by adding triisopropanolamine (TIPA). The paste was prepared by 70 wt% cement and 30 wt% GGBS, sodium chloride, TIPA (0.03%, 0.06% and 0.10%, by weight of binder) and water. The paste was cured for 7 d and 60 d, and the chloride binding ratio (CBR) were measured. The hydration heat and compressive strength were examined, then the hydrates and pore structure of the hardened paste were also analyzed; and the effect of TIPA on aluminum and ferric dissolution of GGBS was also studied. The results showed that TIPA could promote CBR at both 7 d and 60 d. The reason was ascribed to three aspects: (1) TIPA facilitate the formation of FS, which contribute to chem. binding; (2) TIPA promoted the formation of C-S(A)-H gel, which would increase the phys. binding; (3) TIPA refined the pore structure and increased fractal dimension, which could enhance the migration resistance. Furthermore, TIPA promoted cement hydration and pozzolanic reaction of GGBS by facilitated the dissolution of aluminum and ferric in GGBS. Addnl., the formation of Friedel’s salt was promoted due to the transformation of ettringite to AFm-like phase promoted by TIPA. Such results suggested a new way to improve chloride binding capacity of cementitious materials by adding alkanolamine.

Construction and Building Materials published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C9H21NO3, Category: alcohols-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Tawfic, Medhat L. published the artcileNatural abundant prodegradant for Oxo-degradation of polymers, Recommanded Product: Pentane-1,5-diol, the publication is Journal of Polymer Research (2022), 29(2), 60, database is CAplus.

In the present study, novel polypentane maleate (PPM)/linear low-d. polyethylene (LLPE) composites for potential medical disposables application as biodegradable pads were prepared Polypentane maleate as biodegradable polyester was prepared by adding stoichiometric amounts of maleic acid and pentane diol in presence of titanium tetrabutoxide as a catalyst. FT-IR, ¹HNMR and GPC were performed to elucidate the chem. structure of the prepared polymer. Preparation of oxo-degradable polymers (OBP) were achieved by compounding PPM, cellulosic fibers (CF) and LLPE. Synthetic prodegradant such as benzophenone and promising natural prodegradant such as extracted chlorophyll were added to the prepared composites. The polymeric composites were exposed to UV irradiation for different period to evaluate their oxo-degradation behavior. Carbonyl indexes were calculated for oxo-degradable polymers using FT-IR spectroscopy. Furthermore, X- Ray diffraction and differential scanning calorimetry (DSC) were conducted to follow up the crystallinity of the prepared samples. Mech. properties for polymeric composites were evaluated before and after UV exposure. Morphol. of the polymeric composites was investigated by scanning electron microscope. DSC anal. showed that chlorophyll enhances the decrease of crystallinity rather than benzophenone. As well as, mech. results revealed that chlorophyll lowers tensile strengths after 20 days of UV exposure less than in case of benzophenone. These results confirm that chlorophyll is efficient prodegradant.

Journal of Polymer Research published new progress about 111-29-5. 111-29-5 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ploymers, name is Pentane-1,5-diol, and the molecular formula is C7H10O4, Recommanded Product: Pentane-1,5-diol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Tsarev, Vasily N. published the artcileP-chiral monodentate diamidophosphites – New and efficient ligands for palladium-catalysed asymmetric allylic substitution, Recommanded Product: 1-Methylcyclobutan-1-ol, the publication is European Journal of Organic Chemistry (2004), 2214-2222, database is CAplus.

Monodentate hexahydropyrrolodiazaphosphole ligands I [R = MeO, Me₂CHO, Me₃CO, (F₃C)₂CHO, 1-Me-1-cyclobutoxy, 1-adamantyloxy, (-)-menthyloxy, PhO, Et₂N, 1-piperidinyl] are prepared and used as ligands for enantioselective allylic substitution and amination reactions of 1,3-diphenylallyl acetate with sodium 4-methylbenzenesulfinate, benzylamine, and di-Me malonate to give substitution products in up to 97% ee. Reaction of alcs. or amines with I (R = Cl) [prepared in one step from (2R)-2-(phenylaminomethyl)pyrrolidine and PCl₃] yields I [R = MeO, Me₂CHO, Me₃CO, (F₃C)₂CHO, 1-Me-1-cyclobutoxy, 1-adamantyloxy, (-)-menthyloxy, PhO, Et₂N, 1-piperidinyl]. I are isolated as mixtures of epimers at phosphorus favoring the (R^P)-configuration. Dinaphthodioxaphosphepines derived from (R)-BINOL are also prepared as nonracemic ligands for comparison. Dimeric rhodium complexes and a monomeric rhodium complexes are prepared from I and [Rh(CO)₂Cl]₂ and characterized by ³¹P NMR. (allyl)palladium complexes derived from I and allylpalladium chloride dimer are prepared as catalysts for allylic substitution and amination reactions; the complexes can also be generated in situ using either allylpalladium chloride dimer or tris(dibenzylideneacetone)dipalladium as precursors, but in some cases the use of in situ generated catalysts gives products with decreased enantioselectivities. The most effective catalysts are those containing phosphine ligands with moderate π-acidity; less π-acidic ligands give decreased enantioselectivities. The enantioselectivity of allylic amination reactions using I and their derived palladium complexes increases as the cone angle of the phosphine increases. Allylic alkylation of (allyl)(methyl)carbonate with a carborane-containing phenylacetic acid ester gives an (allyl)(carboranyl)phenylacetate ester in up to 73% ee, the first direct asym. reaction for a carborane derivative

European Journal of Organic Chemistry published new progress about 20117-47-9. 20117-47-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic cyclic hydrocarbon,Alcohol, name is 1-Methylcyclobutan-1-ol, and the molecular formula is C2H2N4O2, Recommanded Product: 1-Methylcyclobutan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Zasosov, R. V. published the artcileExcretion of naphthamon in the bile of white rats, Recommanded Product: N-Benzyl-N,N-dimethyl-2-phenoxyethanaminium 3-hydroxy-2-naphthoate, the publication is Meditsinskaya Parazitologiya i Parazitarnye Bolezni (1973), 42(5), 557-60, database is CAplus and MEDLINE.

Naphthamon (I) [3818-50-6] (50-1250 mg/kg) was detected in the bile 10 min after it was introduced into the duodenum of rats. The total amount of I excreted in the bile for 24-48 hr was <1% of the dose applied.

Meditsinskaya Parazitologiya i Parazitarnye Bolezni published new progress about 3818-50-6. 3818-50-6 belongs to alcohols-buliding-blocks, auxiliary class Anti-infection,Antiparasitic, name is N-Benzyl-N,N-dimethyl-2-phenoxyethanaminium 3-hydroxy-2-naphthoate, and the molecular formula is C5H11BrO, Recommanded Product: N-Benzyl-N,N-dimethyl-2-phenoxyethanaminium 3-hydroxy-2-naphthoate.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Ouyang, Mi published the artcileStudy on electrochromic performance of the copolymer based on 4-(1H-pyrrol-1-yl) phenyl 4-(1H-pyrrol-1-yl) butanoate with 3,4-ethylenedioxythiophene, Safety of 4-(1H-Pyrrol-1-yl)phenol, the publication is Advanced Materials Research (Durnten-Zurich, Switzerland) (2011), 335-336(Pt. 2), 929-933, database is CAplus.

A new polypyrrole derivative 4-(1H-pyrrol-1-yl) Ph 4-(1H-pyrrol-1-yl) butanoate (NPB) was synthesized by chem. method and characterized by ¹H and ¹³C NMR spectroscopy. A new copolymer based on NPB and 3,4-ethylenedioxythiophene(EDOT) was electrochem. synthesized. Cyclic voltammogram and spectroelectrochem. characterization showed that the copolymer film had a well-defined reversible redox process as well as electrochromic behavior. Moreover, the copolymer film exhibited a multicolor electrochromism at different potentials, fast switching time of 0.8 s at 365 nm and an optical contrast of 17% at 1100nm.

Advanced Materials Research (Durnten-Zurich, Switzerland) published new progress about 23351-09-9. 23351-09-9 belongs to alcohols-buliding-blocks, auxiliary class Pyrrole,Benzene,Alcohol, name is 4-(1H-Pyrrol-1-yl)phenol, and the molecular formula is C10H9NO, Safety of 4-(1H-Pyrrol-1-yl)phenol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Cipriani, Andreza published the artcilePhenolic compounds of Eugenia involucrata (Myrtaceae) extracts and associated antioxidant and inhibitory effects on acetylcholinesterase and α-glucosidase, Category: alcohols-buliding-blocks, the publication is Natural Product Research (2022), 36(4), 1134-1137, database is CAplus and MEDLINE.

Eugenia involucrata DC. (Myrtaceae), popularly known as “cereja-do-Rio-Grande”, is a native tree from Brazil, popularly used as a hypoglycemiant. Crude hydroalcoholic extract (CHE) and fractions (insoluble (FI), dichloromethane (FDM), Et acetate (FEA) and butanol (FBu)) of leaves were assessed to determine the phenolic chem. composition by HPLC-ESI-MS/MS. 10 compounds were identified, being 7 new for this species: rutin, isoquercitrin, luteolin-7-O-rutinoside, mandelic acid, naringenin, luteolin-7-O-glucoside and salicylic acid. Extract and fractions showed inhibitory activity on acetylcholinesterase (AchE) enzyme (best result: IC50 = 44.19μg mL-1, for FEA) and α-glucosidase (α-Glu) (best result: IC50 = 31.25 ± 0.15μg mL-1, for CHE). The observed antioxidant and inhibitory activity on the AchE and α-Glu is due to, at least in part, the presence of phenolic compounds in the samples.

Natural Product Research published new progress about 90-64-2. 90-64-2 belongs to alcohols-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Alcohol,Natural product, name is 2-Hydroxy-2-phenylacetic acid, and the molecular formula is C8H8O3, Category: alcohols-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Min, Jie published the artcileA star-shaped D-π-A small molecule based on a tris(2-methoxyphenyl)amine core for highly efficient solution-processed organic solar cells, Recommanded Product: 5,5′-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2′-bithiophene, the publication is Journal of Materials Chemistry C: Materials for Optical and Electronic Devices (2014), 2(36), 7614-7620, database is CAplus.

A new star-shaped D-π-A small mol., 2,2′,2”-{nitrilotris[(3-methoxy-4,1-phenylene)-2,2′-bithiene-5′,5-diyleth-1-yl-1-ylidene]}tri-malononitrile N(Ph(OMe)-2T-DCN-Me)₃, with high efficiency potential for photovoltaic applications was synthesized. Introducing a soluble tris(2-methoxyphenyl)amine (TPA-MeO) core unit can significantly improve the solubility of star-shaped small mols. without neg. impacting intramol. conjugation and intermol. solid state arrangements. Solution-processed organic solar cells based on a blend of N(Ph(OMe)-2T-DCN-Me)₃ and PC₇₀BM show an initially high power conversion efficiency of over 4% under simulated AM 1.5.

Journal of Materials Chemistry C: Materials for Optical and Electronic Devices published new progress about 239075-02-6. 239075-02-6 belongs to alcohols-buliding-blocks, auxiliary class Thiophene,Boronic acid and ester,Boronate Esters, name is 5,5′-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2′-bithiophene, and the molecular formula is C20H28B2O4S2, Recommanded Product: 5,5′-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2′-bithiophene.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts