Tag: M.W=250-300

Zhao, Zhen published the artcileTough and self-healing hydrophobic association hydrogels with cationic surfactant, Application In Synthesis of 142-90-5, the main research area is acrylamide lauryl methacrylate copolymer hydrogel micellar copolymerization hydrophobic association; mech rheol self healing property.

Hydrophobic association (HA) hydrogels with outstanding mech., rheol. and recovery properties were successfully synthesized by micellar copolymerization of acrylamide with lauryl methacrylate. The synthesis occurred at room temperature and the synthesis condition was moderate by using the redox initiator system of ammonium persulfate – sodium bisulfite as initiators. Cationic surfactant (dodecyl tri-Me ammonium bromide) was utilized to form micelles with hydrophobe, served as phys. crosslinking points in the 3D networks of hydrogels. The HA hydrogels showed a high tensile strength of 181 kPa, superior stretchability of 2300% and excellent toughness of 2.16 MJ m-3. Moreover, they owned extraordinary self-recovery under different conditions. It is hopeful that the hydrogels with superior mech. strength and self-healing properties would be applied to the fields of biomedicine and engineering. Meanwhile, based on above materials, HA hydrogels could also be synthesized with the combination of hydrophobic association and other synergistic effects, such as latex particles, electrostatic effect and nanoparticles.

Journal of Applied Polymer Science published new progress about Cationic surfactants. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Application In Synthesis of 142-90-5.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Li, Youqiang published the artcileA highly sensitive strain sensor based on a silica@polyaniline core-shell particle reinforced hydrogel with excellent flexibility, stretchability, toughness and conductivity, Category: esters-buliding-blocks, the main research area is polyaniline silica core shell particle reinforced hydrogel strain sensor.

Hydrogel-based flexible strain sensors for personal health monitoring and human-machine interaction have attracted wide interest among researchers. In this paper, hydrophobic association and nanocomposite conductive hydrogels were successfully prepared by introducing polyaniline coated silica (SiO2@PANI) core-shell particles into an acrylamide-lauryl methacrylate (P(AM/LMA)) copolymer matrix. The hydrophobic interaction between the SiO2@PANI core-shell particles and the hydrophobic LMA in the P(AM/LMA) chains induced the hydrogels with outstanding mech. properties. Furthermore, the polyaniline on the SiO2 surface and the inorganic salt formed a conductive network, which synergistically enhanced the conductivity of the hydrogels. The obtained hydrogels integrate high tensile strength (1398 kPa), ultra-stretchability (>1000%), wonderful strain sensitivity (gauge factor = 10.407 at 100-1100% strain), quick response (300 ms), and excellent durability (>300 cycles) due to the hydrophobic association and nanocomposite effect. The prepared SiO2@PANI-P(AM/LMA) hydrogel shows high stress sensitivity to detect human movements and displays a broad application prospect in flexible strain-sensor field.

Soft Matter published new progress about Compressive strength. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Radulovic, Niko S. published the artcileImmunomodulatory Constituents of Conocephalum conicum (Snake Liverwort) and the Relationship of Isolepidozenes to Germacranes and Humulanes, Recommanded Product: Ethyl pentadecanoate, the main research area is immunomodulatory Conocephalum isolepidozene germacrane humulane.

Structural elucidation of three new sesquiterpenoids, namely, (1Z,4E)-lepidoza-1(10),4-dien-14-ol (I), rel-(1(10)Z,4S,5E,7R)-germacra-1(10),6 diene-11,14-diol (2), and rel-(1(10)Z,4S,5E,7R)-humula-1(10),5-diene-7,14-diol (3), isolated from the liverwort Conocephalum conicum, was accomplished by a combination of extensive NMR experiments, 1H NMR simulation, and other means. Addnl., the change of the identity of bicyclogermacren-14-al, previously reported as a C. conicum constituent, to isolepidozen-14-al is proposed. Compounds 2 and 3 appear to be related to I via hydration involving a shared intermediate, a substituted cyclopropylmethyl cation, formed by a highly regio- and stereoselective protonation of I, followed by a stereospecific fission of the three-membered ring. In other words, an isolepidozene derivative might be a branchpoint to humulanes and germacranes; this transformation could be of, up to now, unknown, biosynthetic and/or synthetic relevance. Multivariate statistical anal. of the compositional data of C. conicum extract constituents was used to probe the hypothesized biochem. relations. The immunomodulatory effect of I-3 and conocephalenol (4) was evaluated in an in vitro model on both nonstimulated and mitogen-stimulated rat splenocytes. The compounds displayed varying degrees of cytotoxicity to nonstimulated splenocytes, whereas 2 and 3 were found to exert immunosuppressive effects on Con A-stimulated splenocytes while not being cytotoxic at the same concentrations

Journal of Natural Products published new progress about Conocephalum conicum. 41114-00-5 belongs to class esters-buliding-blocks, name is Ethyl pentadecanoate, and the molecular formula is C17H34O2, Recommanded Product: Ethyl pentadecanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Liu, Guiju published the artcileIntegration of photoelectrochemical devices and luminescent solar concentrators based on giant quantum dots for highly stable hydrogen generation, Synthetic Route of 142-90-5, the main research area is photoelectrochem cell luminescent solar concentrator quantum dot hydrogen evolution; cadmium sulfide selenide quantum dot photosensitizer hydrogen evolution photostability.

Hydrogen generation from water under sunlight illumination is the key to construct a sustainable and clean energy system. To date, the long-term stability of photoanodes based on colloidal quantum dots (QDs) for hydrogen generation remains a major challenge due to the degradation of the QDs and hole accumulation. The degradation is usually caused by the self-oxidation of QDs induced by UV radiation. Here, we propose a concept of integrating a luminescent solar concentrator (LSC) with a photoelectrochem. (PEC) cell into a standalone device to improve the stability of the PEC device for hydrogen generation by avoiding direct irradiation of UV light on PEC devices. In this study, CdSe/(CdSxSe1-x)5/CdS core/multi-shell QDs were used as a photosensitizer. The PEC device based on alloyed multi-shell QDs shows a saturated photocurrent d. of 11.5 mA cm-2 and maintains �6.2% of its initial value after 23 h of sunlight illumination (100 mW cm-2). PEC devices based on QDs coupled with an LSC exhibit a saturated photocurrent d. of 1.2 mA cm-2, and �4.6% of its initial value was retained after 23 h of continuous illumination, indicating a 420% enhancement compared to a PEC device alone. This finding proves a unique concept to improve the photo-stability of PEC devices by coupling with an LSC.

Journal of Materials Chemistry A: Materials for Energy and Sustainability published new progress about Core-shell materials. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Synthetic Route of 142-90-5.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Gao, Yong published the artcileIonic liquid-containing non-aqueous Pickering emulsions prepared with sterically-stabilized polymer nanoparticles: A highly efficient platform for Knoevenagel reaction, Application of Dodecyl 2-methylacrylate, the main research area is ionic liquid Pickering emulsion polymer nanoparticle Knoevenagel reaction.

Room temperature ionic liquids (RTILs)-containing Pickering emulsions exhibit promising application potentials because of the integration of the “”green”” quality and the tunable applications of RTILs with the advantages of Pickering emulsions, such as the high stability and adjustable droplet size. In the present study, sterically-stabilized polymer nanoparticles (SSPNs) were first prepared via the reversible addition-fragmentation chain transfer (RAFT)-mediated non-aqueous dispersion polymerization, in which poly(lauryl methacrylate) (PLMA) and poly(4-vinyl pyridine) (P4VP) acted as the stabilizer block and the core-forming block, resp. Kinetically-trapped PLMA-b-P4VP spheres and mixed spherical/worm-like morphologies could be achieved at a target copolymer composition Subsequently, core cross-linked SSPNs (CSSPNs) were obtained by means of chem. crosslinking of P4VP cores of SSPNs with 1,4-dibromobutane in a diluted solution of SSPNs in toluene (0.4 mg/mL). Stable 1-butyl-3-methylimidazolium tetrafluoroborate-in-toluene ([Bmim][BF4]-in-toluene) non-aqueous Pickering emulsions could be formed at a low emulsifier content of 0.005 wt% adopting CSSPNs with mixed spherical/worm-like morphologies as Pickering emulsifiers. Benefiting from large surface areas of Pickering emulsions and unique chem./phys. properties of RTILs, [Bmim][BF4]-in-toluene Pickering emulsions provided readily available platforms for many organic reactions. As a proof of the concept, proline catalyzed Knoevenagel reaction of 4-nitrobenzaldehyde with malononitrile was chosen as a model here. Both high reaction efficiency and good recyclability were observed

Colloids and Surfaces, A: Physicochemical and Engineering Aspects published new progress about Emulsions, Pickering. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Application of Dodecyl 2-methylacrylate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Zeng, Min published the artcileTailoring the droplet size of Pickering emulsions by PISA synthesized polymeric nanoparticles, Application In Synthesis of 142-90-5, the main research area is tailoring droplet size pickering emulsion.

Pickering emulsions, water or oil droplets stabilized solely by solid particles, are attracting increasing attention, due to the fascinating possibilities for applications in food, pharmaceuticals and preparation of hybrid materials. In this paper, we report oil-in-water (O/W) Pickering emulsions stabilized solely by polymerization-induced self-assembly (PISA) synthesized diblock copolymer spherical nanoparticles. Poly(N,N-dimethylaminoethyl methacrylate)-b-poly(benzyl methacrylate) (PDMA-b-PBzMA) diblock copolymer nanoparticles with 20 wt% solid content were prepared in ethanol via RAFT dispersion polymerization Then PDMA-b-PBzMA nanoparticles were used as emulsifiers to prepare O/W Pickering emulsions by homogenization. The regulation of droplet size of the O/W Pickering emulsion was systemically investigated by adjusting the size of emulsifiers, the concentration of emulsifiers, and the ratio of oil/water. Moreover, Pickering emulsion polymerization was successfully applied to prepare poly (laurate methacrylate) microparticles. These results provide instructive insights to choose proper nanoparticles for the preparation of Pickering emulsions and control over the size of emulsion droplets.

Polymer published new progress about Emulsions, Pickering. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Application In Synthesis of 142-90-5.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Rymaruk, Matthew J. published the artcileOil-in-oil Pickering emulsions stabilized by diblock copolymer nanoparticles, COA of Formula: C16H30O2, the main research area is Pickering emulsion diblock copolymer nanoparticle; Block copolymers; Nanoparticles; Pickering emulsions; Self-assembly.

Diblock copolymer nanoparticles have been shown to be Pickering emulsifiers for both oil-in-water and water-in-oil emulsions. Recently, we reported the preparation of sterically-stabilized diblock copolymer spheres in a low-viscosity silicone oil (Macromols. 53 (2020) 1785-1794). We hypothesized that such spheres could be used as a Pickering emulsifier for a range of oil-in-oil emulsions comprising droplets of a bio-sourced oil dispersed in silicone oil. Diblock copolymer spheres were prepared via reversible addition-fragmentation chain transfer (RAFT) dispersion polymerization of benzyl methacrylate in silicone oil and characterized by dynamic light scattering and transmission electron microscopy. These spheres were evaluated as Pickering emulsifiers for a series of oil-in-oil Pickering emulsions. The influence of both sphere size and core-forming block composition was investigated. Optimization of the nanoparticle size and core-forming block composition enabled stable bio-sourced oil-in-silicone emulsions to be obtained for nine out of the ten bio-sourced oils investigated. These emulsions were characterized in terms of their mean droplet size by optical microscopy.

Journal of Colloid and Interface Science published new progress about Emulsions, Pickering. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, COA of Formula: C16H30O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Fang, Chen published the artcileGradient polarity solvent wash for separation and analysis of electrolyte decomposition products on electrode surfaces, Application In Synthesis of 142-90-5, the main research area is LIB electrode SEI analysis gradient polarity solvent wash.

The solid electrolyte interphase (SEI) formed during the cycling of lithium-ion batteries (LIBs) by decomposition of electrolyte mols. has key impact on device performance. However, the detailed decomposition process and distribution of products remain a mystery due to the wide variety of electrochem. pathways and the lack of facile anal. methods for chem. characterization of SEIs. In this report, a gradient polarity solvent wash technique involving the use of solvents with gradually increased polarities is employed to sequentially remove different SEI components from electrode surfaces. Fourier transform IR (FTIR) spectroscopy is utilized to characterize the SEI composition The impacts of electrolyte additives and discharge rates over SEI formation are illustrated. This study presents a new concept of rationally controlled solvent wash technique for electrode surface anal. that can selectively remove targeted components. The findings in this study provide exptl. support for the slow charge formation processes commonly employed for LIBs in industry.

Journal of the Electrochemical Society published new progress about Battery electrolytes. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Application In Synthesis of 142-90-5.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Veselkova, I. published the artcileGel electrolytes based on copolymers, COA of Formula: C16H30O2, the main research area is gel electrolytes copolymer mech property.

This paper deals with preparation of gel electrolytes based on copolymers. Copolymer is a new material, which consists of two different monomers. The main goal of this work was to find a new gel electrolyte with conductivity more than 5 mS/cm with a good elec. stability and good mech. properties. Impedance spectroscopy and linear voltammetry were used for measurement elec. conductivity and potential window.

ECS Transactions published new progress about Electric conductivity. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, COA of Formula: C16H30O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Keum, Hyeongseop published the artcileImpeding the Medical Protective Clothing Contamination by a Spray Coating of Trifunctional Polymers, Related Products of esters-buliding-blocks, the main research area is medical clothing antimicrobial polymer spray coating PPE.

The risk of fomite-mediated transmission in the clinic is substantially increasing amid the recent COVID-19 pandemic as personal protective equipment (PPE) of hospital workers is easily contaminated by direct contact with infected patients. In this context, it is crucial to devise a means to reduce such transmission. Herein, we report an antimicrobial, antiviral, and antibiofouling trifunctional polymer that can be easily coated onto the surface of medical protective clothing to effectively prevent pathogen contamination on the PPE. The coating layer is formed on the surfaces of PPE by simple spray-coating of an aqueous solution of the trifunctional polymer, poly(DMA-PEGMA-QA). To establish an optimal ratio of antifouling and antimicrobial functional groups, we performed antifouling, antibacterial, and antiviral tests using four different ratios of the polymers. Antifouling and bactericidal results were assessed using Staphylococcus aureus, a typical pathogenic bacterium that induces an upper respiratory infection. Regardless of the molar ratio, polymer-coated PPE surfaces showed considerable antiadhesion (�5-75%) and antibacterial (�5-87%) efficacies soon after in contact with pathogens and maintained their capability for at least 24 h, which is sufficient for disposable PPEs. Further antiviral tests using coronaviruses showed favorable results with PPE coated at two specific ratios (3.5:6:0.5 and 3.5:5.5:1) of poly(DMA-PEGMA-QA). Moreover, biocompatibility assessments using the two most effective polymer ratios showed no recognizable local or systemic inflammatory responses in mice, suggesting the potential of this polymer for immediate use in the field.

ACS Omega published new progress about Antibacterial agents. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Related Products of esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics