Category: 111-29-5

Albozahid, Muayad published the artcileStudy on the effect of tailoring the hard copolymer polyurethane on the thermal, mechanical and electrical properties of hard copolymer polyurethane/multi-walled carbon nanotubes nanocomposites, SDS of cas: 111-29-5, the publication is Journal of Composite Materials (2022), 56(10), 1467-1480, database is CAplus.

This study focusses on the effect of the addition of multi-walled carbon nanotubes (MWCNTs) on the morphol. and thermal, rheol. and elec. properties of hard copolymer polyurethane (HCPU) using 1,5 pentane-diols as a chain extender, containing 85% of hard segment blocks. Step-growth polymerization was used to synthesize a HCPU polymer matrix, followed by melt compounding to prepare the nanocomposites. SEM investigation of the neat HCPU structure and its nanocomposites indicated the uniform dispersion of MWCNTs within the polymer matrix; further TEM morphol. investigation showed some agglomeration regions, attributed to the high MWCNT content (2 wt%). An XRD test confirmed a homogeneous distribution of MWCNTs by observing the remaining location of the highest peaks of MWCNTs and amorphous peaks of the HCPU matrix. Anal. of the melt rheol. test results showed an improvement in complex viscosity combined with an increase in the G’ and G” of nanocomposites from those of pure HCPU due to the presence of MWCNTs. Finally, elec. conductivity of nanocomposites demonstrated a significant improvement in its value at high loading of MWCNTs from that of pure HCPU matrix.

Journal of Composite Materials 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 C5H12O2, SDS of cas: 111-29-5.

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

Albozahid, Muayad published the artcileEffect of dispersion methods on the performance of novel rigid copolymer polyurethane nanocomposites based on graphene nanofillers, Application In Synthesis of 111-29-5, the publication is Polymer-Plastics Technology and Materials (2022), 61(4), 426-440, database is CAplus.

The Rigid Copolymer Polyurethanes (RCPUs) as nanocomposites were synthesized by in-situ polymerization (ISP), melt compounding (MC), and solution mixing (SM) with wide range of weight ratios of graphite nanoplatelets (GNP). The blending process was utilized to obtain well- dispersed of GNP and thus strong interaction, leading to an effective performance of the RCPU/GNP nanocomposites. The structure of RCPU/GNP nanocomposites was studied using FTIR test. The thermal stability of RCPU nanocomposites was seen by TGA anal., showing an increase with addition of GNP nanofillers. Rheol. anal. revealed network formation with well-dispersed GNP regarding different dispersion approaches. Thermal and elec. tests were also conducted, approving that dispersion and interaction of GNP can play a crucial role for enhancing the thermal and elec. properties. Such a significant improvement in RCPU matrix performance could lead to the use of this material for different application.

Polymer-Plastics Technology and Materials 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 C5H12O2, Application In Synthesis of 111-29-5.

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

Campisi, Sebastiano published the artcileFurfural Adsorption and Hydrogenation at the Oxide-Metal Interface: Evidence of the Support Influence on the Selectivity of Iridium-Based Catalysts, Formula: C5H12O2, the publication is ChemCatChem (2022), 14(6), e202101700, database is CAplus.

Here, tetrakis(hydroxymethyl)phosphonium chloride-protected colloidal iridium nanoparticles were deposited by sol-immobilization on three different supports (CeO₂, NiO and TiO₂) and were investigated for the liquid-phase direct hydrogenation (H₂ atmosphere) and catalytic transfer hydrogenation – CTH (N₂ atmosphere) of furfural to study the effect of the H donor. The occurrence of strong-metal support interactions in 1 wt % Ir/CeO₂ catalyst, as disclosed by XPS, was revealed to be responsible for the high activity observed in the direct hydrogenation (81% conversion after 6 h) and for the unusual selectivity to 2-methylfuran (70%) under CTH conditions. On the other hand, Ir/NiO showed peculiar selectivity to tetrahydrofurfuryl alc. in both H₂ and N₂ atmospheres (71% and 70%, resp.). The d. functional theory calculations further showed that the unique selectivity of Ir/NiO may be ascribed to the adsorption properties of furfural on the support, which activates a dual-site hydrogenation mechanism.

ChemCatChem 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 C5H12O2, Formula: C5H12O2.

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

Robalo, Joao R. published the artcileInfluence of Methylene Fluorination and Chain Length on the Hydration Shell Structure and Thermodynamics of Linear Diols, Application of Pentane-1,5-diol, the publication is Journal of Physical Chemistry B (2021), 125(49), 13552-13564, database is CAplus and MEDLINE.

The interplay between the local hydration shell structure, the length of hydrophobic solutes, and their identity (perfluorinated or not) remains poorly understood. We address this issue by combining Raman-multivariate curve resolution (Raman-MCR) spectroscopy, simulation, and quantum-mech. calculations to quantify the thermodn. and the first principle interactions behind the formation of defects in the hydration shell of alkyl-diol and perfluoroalkyl-diol chains. The hydration shell of the fluorinated diols contains substantially more defects than that of the nonfluorinated diols; these defects are water hydroxy groups that do not donate hydrogen bonds and which either point to the solute (radial-dangling OH) or not (nonradial-dangling OH). The number of radial-dangling OH defects per carbon decreases for longer chains and toward the interior of the fluorinated diols, mainly due to less favorable electrostatics and exchange interactions; nonradial-dangling OH defects per carbon increase with chain length. In contrast, the hydration shell of the nonfluorinated diols only contains radial-dangling defects, which become more abundant toward the center of the chain and for larger chains, predominantly because of more favorable dispersion interactions. These results have implications for how the folding of macromols., ligand binding to biomacromols., and chem. reactions at water-oil interfaces could be modified through the introduction of fluorinated groups or solvents.

Journal of Physical Chemistry B 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 C5H12O2, Application of Pentane-1,5-diol.

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

Zheng, Lei published the artcileBio-based 1,5-Pentanediol as a Replacement for Petroleum-Derived 1,6-Hexanediol for Polyester Polyols, Coatings, and Adhesives, Synthetic Route of 111-29-5, the publication is ACS Sustainable Chemistry & Engineering, database is CAplus.

Amorphous and semi-crystalline polyester polyols based on a novel, low cost, bio-based 1,5-pentanediol (Bio-PDO) were synthesized and formulated into solvent-borne coatings and hot melt adhesives. Bio-PDO may provide a lower cost, more sustainable, and non-petroleum-based alternative to polyols based on 1,6-hexanediol (HDO). The polyester polyols were characterized for end group composition, monomer incorporation, and thermal transitions. Bio-PDO-based coatings exhibited performance, including hardness, flexibility, adhesion strength, and solvent resistance, similar to the coatings based on petroleum-derived HDO. Bio-PDO-based adhesives exhibited lower green strength (initial adhesion strength) and longer open time (workable time to bond substrates) than HDO-based adhesives. The effects of common bio-based impurities, including lactones and mono-alcs. (δ-valerolactone and tetrahydrofurfuryl alc. as examples of impurities), on polyester polyols were investigated. Hydroxyl functionalities of polyols were controlled by the excess diols in monomer feeds and were not impacted largely by the δ-valerolactone levels. High-level tetrahydrofurfuryl alc. terminated the polyester ends with unreactive functionality. Deleterious effects on polyol hydroxyl functionality are not expected at the low impurity levels (<2 weight %) found in leading bio-PDO processes.

ACS Sustainable Chemistry & Engineering 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 C4H5F3N2O3S, Synthetic Route of 111-29-5.

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

Yoshida, Keisuke published the artcileAmine-Free O -Sulfonylation by a Combination of 4-Methylpyridine N -Oxide Catalyst with 4Å Molecular Sieves, Recommanded Product: Pentane-1,5-diol, the publication is Synlett, database is CAplus.

An amine-free sulfonylation of various alcs. was developed that uses 4-methylpyridine N-oxide in the presence of 4Å mol. sieves at room temperature This mild method gave various sulfonylated products in high yields, and can be applied to base-sensitive substrates.

Synlett 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 C6H5NO, Recommanded Product: Pentane-1,5-diol.

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

Jain, Isha published the artcileIndium(III)-Catalyzed Synthesis of Primary Carbamates and N-Substituted Ureas, Related Products of alcohols-buliding-blocks, the publication is Synlett (2022), 33(1), 93-97, database is CAplus.

An indium triflate-catalyzed synthesis of primary carbamates RXC(O)NH₂ [R = i-Bu, Bn, Ph, etc.; X= O, N] from alcs. and urea as an ecofriendly carbonyl source was developed. Various linear, branched, and cyclic alcs. were converted into the corresponding carbamates in good to excellent yields. This method also provided access to N-substituted ureas by carbamoylation of amines. All the products were obtained by simple filtration or crystallization, without the need for chromatog. purification Mechanistic investigations suggested that the carbamoylation reaction proceeded through activation of urea by O-coordination with indium, followed by nucleophilic attack by the alc. or amine on the carbonyl center of urea. The inexpensive and easily available starting materials and catalyst, the short reaction times, and the ease of product isolation highlighted the inherent practicality of the developed method.

Synlett 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 C5H12O2, Related Products of alcohols-buliding-blocks.

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

Hoque, Anamul Md. published the artcileModes of interaction and thermodynamic behavior of aggregation of CTAB + BSA mixtures in diols media: effects of diols composition and temperature, Category: alcohols-buliding-blocks, the publication is Chemical Engineering Communications, database is CAplus.

The micellization of cetyltrimethylammonium bromide (CTAB) and bovine serum albumin (BSA) mixture has been studied conductometrically in aqueous solutions of different diols (1,2-propanediol (1,2-PrD), 2,3-butanediol (2,3-BD), and 1,5-pentanediol (1,5-PD)) media over the temperature range from 298.15 K to 323.15 K to gain insight into the mode and degree of interaction amongst the investigated constituents. The critical micelle concentration (cmc) values of the CTAB + BSA mixtures were attained initially low but enhanced with the rise in temperature in all the media studied. The values of the CTAB + BSA mixtures in the different diols media followed the order: The degree of micelle ionization (α) increased with increasing carbon chain length of diols and temperature The Gibbs free energy values associated with the micellization of the CTAB + BSA mixture were neg. and revealed a lowering of the spontaneity of micellization with increasing carbon chain length of the diols. The enthalpy and entropy changes of micellization revealed that the micellization was exothermic and mainly an enthalpy-controlled process in aqueous 1,2-PrD and 2,3-BD media while the process being endothermic, and entropy controlled in the 1,5-PD medium. The contribution of the solvent to the thermodn. parameters was assessed from free energy of transfer, enthalpy of transfer, and entropy of transfer values. The enthalpy-entropy compensation parameters were also studied and discussed with proper reasoning.

Chemical Engineering Communications 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 C5H12O2, 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

Jiang, Yu published the artcileSolution [2 + 2] photopolymerization of biomass-derived nonrigid biscinnamate monomers enabled by energy transfer catalysis, SDS of cas: 111-29-5, the publication is Polymer Chemistry (2022), 13(17), 2538-2544, database is CAplus.

The [2+2] photopolymerization has been known for more than fifty years and widely applied in many fields. However, this process is typically conducted in the solid state, while the corresponding [2 + 2] photopolymerization of simple non-rigid diolefinic monomers has been rarely achieved in solution under visible light, owing to the lack of monomer preassembly and low/no absorption of visible light. In fact, the [2 + 2] photopolymerization of simple biscinnamate monomers remains an unsolved problem. Here, we demonstrate that energy transfer catalysis could overcome the low efficiency in the intersystem crossing to the triplet states of monomers and enable the [2 + 2] photopolymerization of biomass-derived biscinnamate monomers in solution for the first time. As no preassembly is required, this solution polymerization protocol is applicable to biscinnamate monomers with different linker structures and allows copolymerization between different biscinnamate monomers to regulate polymer mech. properties. A series of cyclobutane-imbedded polyesters (Mw ranged from 25.3 kDa to 61.3 kDa) became accessible, which showed excellent solubility in organic solvents and good processability, in sharp contrast to the properties of the biscinnamate polymers obtained before via solid state photopolymerization methods.

Polymer Chemistry 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 C5H12O2, SDS of cas: 111-29-5.

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