Tag: M.W=250-300

Kovylin, R. S. published the artcileOne-step photolytic synthesis of hydrophobic porous polymer materials by the copolymerization of the dimethacrylate-alkyl methacrylate system in the presence of methanol, Application In Synthesis of 142-90-5, the main research area is methacrylate system hydrophobic porous polymer material methanol photopolymerization.

Hydrophobic porous polymer materials were synthesized by one-step visible light polymerization from compositions consisting of phthalate-containing oligoester di(meth)acrylate MDP-2, methanol, and alkyl methacrylate (Bu methacrylate, ethylhexyl methacrylate, iso-decyl methacrylate, lauryl methacrylate, and stearyl methacrylate) compositions The highest hydrophobization effect is observed for stearyl methacrylate. The maximum MDP-2 block photopolymerization rate is by 16-50 times higher than that of alkyl methacrylates. The sp. surface areas of the synthesized porous polymers reach 4.2 m2 g-1, and the pore size ranges from 5.5 to 17 μm. The addition of stearyl methacrylate to the composition leads to the pore size distribution narrowing. The principal possibility of using these photopolymerizable compositions as stationary phases for liquid chromatog. is shown.

Russian Chemical Bulletin published new progress about Absorption. 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

Zhao, Yi published the artcileDesign and characterization of oil-in-water nanoemulsion for enhanced oil recovery stabilized by amphiphilic copolymer, nonionic surfactant, and LAPONITE RD, Related Products of esters-buliding-blocks, the main research area is oil water nanoemulsion amphiphilic copolymer nonionic surfactant LAPONITE.

The application of nanotechnol. in the oil and gas industry has attracted widespread attention in recent years. This study aims to develop a nanoemulsion (NE) for use in enhanced oil recovery (EOR). The NE stabilized by anion amphiphilic copolymer, nonionic surfactant (Brij30) and modified LAPONITE RD was prepared by the phase inversion composition (PIC) method. The appearance of the emulsion is translucent and the average particle size is less than 60 nm. The micromorphol. and interfacial tension (IFT) are examined using transmission electron microscopy (TEM) and a spinning drop IFT meter, resp. The NE possesses good stability evaluated by conductivity and particle size tests. The absolute value of the zeta potential of NE increases when modified LAPONITE RD is added. In a core flooding experiment with an artificial sandstone core, the NE flooding increased oil recovery by 23.53% compared to water flooding.

RSC Advances published new progress about Absorption. 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

Shabnam, Rukhsana published the artcileCumulative effect of hydrophobic PLMA and surface epoxide groups in composite polymer particles on adsorption behavior of congo red and direct red-75, Related Products of esters-buliding-blocks, the main research area is composite polymer particle hydrophobic PLMA epoxide dye adsorption.

Industrial applications of hydrophobic materials are numerous, particularly as adsorption beads to remove organic pollutants. In this research combined effect of hydrophobicity and reactive epoxide group on the adsorption behavior of dye mols. by composite polymer particles was investigated. Lauryl methacrylate (LMA) a poor water soluble long chain vinyl monomer is com. available. Polystyrene/poly(LMA-divinyl benzene) or PS/P(LMA-DVB) composite seed particles were first prepared by slightly modified activated swelling of micron-sized PS seed particles utilizing either water or water-ethanol dispersion medium. The influence of poly(vinyl alc.) (PVA) as steric stabilizer on the size and size distribution was evaluated. The poor solubility of LMA in the continuous phase hindered the homogeneous swelling of PS particles even in the presence of ethanol (5% weight/weight) and resulted in fairly polydispersed PS/P(LMA-DVB) composite seed particles. The composite seed particles were then functionalized with epoxide group by seeded polymerization of glycidyl methacrylate (GMA) to produce PS/P(LMA-DVB)/PGMA composite polymer particles. The epoxide functionalized PS/P(LMA-DVB)/PGMA composite polymer particles were used to adsorb two kinds of azo dyes, congo red (CR) and direct red-75 (DR-75). The effects of initial dye concentration at 303 and 323 K on adsorption behavior were investigated and the adsorption was explained by adsorption isotherms. Temperature dependent adsorption measurements were also carried out at identical initial dye concentration The adsorption results showed that inclusion of reactive epoxide group on/near the surface of hydrophobic PS/P(LMA-DVB) composite seed particles improved the adsorption capacity of dye mols.

Arabian Journal of Chemistry published new progress about Adsorbents. 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

Han, Linglin published the artcileMussel-inspired, robust and self-healing nanocomposite hydrogels: Effective reusable absorbents for removal both anionic and cationic dyes, Synthetic Route of 142-90-5, the main research area is self healing nanocomposite hydrogel adsorbent dye removal.

Polydopamine (PDA) composited LAPONITE cross-linked hydrophobically associated (PLHA) hydrogels were facilely constructed by in situ polymerization The PLHA hydrogel exerted improved mech. properties and excellent stability with an addnl. crosslinking agent LAPONITE, which guaranteed the hydrogel could be utilized for long-time and reusable application. Notably, the self-healing property of PLHA gels could be achieved easily by the hereinafter three factors: hydrophobic association, LAPONITE and PDA. Compared with the pristine hydrophobic associated (HA) gel, excellent dye adsorption capacity toward both anionic and cationic dyes came out in PLHA gels owing to the neg. charges on LAPONITE and abundant functional groups on PDA nanoparticles such as amine groups, catechol groups and aromatic moieties. The PLHA gels could bind organic dyes via various ways, including coordination, electrostatic interaction, hydrogen bonding or π-π stacking interaction. Compared with the reported works, our proposed method provided the opportunity to prepare a novel robust, self-healing phys. dual cross-linked hydrogels, which have the potential to be applied in tissue engineering and the reusable adsorbents of organic colorants.

Colloids and Surfaces, A: Physicochemical and Engineering Aspects published new progress about Adsorbents. 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

Jaoued-Grayaa, Najeh published the artcileDesign of molecularly imprinted polymer materials relying on hydrophobic interactions, Formula: C16H30O2, the main research area is acrylic molecularly imprinted polymer crosslinking hydrophobic silica adsorption kinetics.

The design of molecularly imprinted polymers (MIPs) for the specific binding of hydrophobic mols. (mitotane) was investigated by considering monomers and crosslinking agents with variable hydrophobic character, Me methacrylate, Bu methacrylate and lauryl methacrylate as functional monomers, and ethylene glycol dimethacrylate and 1,6-hexanediol dimethacrylate as crosslinking agents. MIPs were bound to a porous silica support by means of a radical transfer reaction with grafted 3-mercaptopropyl groups. Equilibrium adsorption isotherms to molecularly imprinted and non-imprinted materials were modeled with the Volmer and Langmuir-Volmer isotherms, giving the thermodn. parameters of adsorption. The most hydrophobic monomer provided the highest selective adsorption although strong non-selective adsorption and the intrinsic softness of poly(lauryl methacrylate) is detrimental to selectivity. Adsorption was exothermic with a predominant enthalpic contribution. Adsorption kinetics were fast due to the high accessibility of mol. imprints on the surface of the thin MIP layer coating the porous silica support.

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

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

Shang, Hui published the artcileBiomimetic organohydrogel actuator with high response speed and synergistic fluorescent variation, Formula: C16H30O2, the main research area is biomimetic organohydrogel actuator synergistic fluorescent variation.

Current hydrogel-based actuators have achieved rapid development due to their excellent performance such as shape-morphing and color-changing for application in fields such as camouflage, biomimetic soft-robotics and so on. However, it is still challenging to fabricate soft robots with the capability of simultaneous changes in shape and fluorescent color at a fast speed when triggered by one single stimulus. Herein, an anisotropic organohydogel actuator made up of rGO-doped hydrophilic poly(N-isopropylacrylamide) (PNIPAM) network and hydrophobic poly(lauryl methacrylate) (PLMA) network is prepared via a two-step interpenetrating method. Bearing fluorescent monomer N-(4-(1,2,2-triphenylvinyl)phenyl)acrylamide (ATPE) as well as fluorescent ligand 6-acrylamidopicolinic acid (6APA), the PLMA network shows fluorescent changes in color or brightness depending on the presence or absence of Eu3+ ions in response to heat/NIR. In a word, the proposed organohydrogel actuator, which exhibits simultaneous fluorescence color variation and fast morphing in response to one stimulus, provides insights in designing and fabricating novel soft robots.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Absorption. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Formula: C16H30O2.

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

Bryuzgin, Evgeny published the artcileBiodegradation Control of Chitosan Materials by Surface Modification with Copolymers of Glycidyl Methacrylate and Alkyl Methacrylates, SDS of cas: 142-90-5, the main research area is glycidyl methacrylate chitosan biodegradation surface modification.

Chitosan is a promising polymer from natural polysaccharides, which is an environmentally friendly compound from renewable raw materials. Chitosan has biodegradability, biocompatibility, and antibacterial and other activities. In this article, we report the biodegradation control of chitosan materials by use of random copolymers based on glycidyl methacrylate and (fluoro)alkyl methacrylates as surface modifiers. We show that grafting of copolymers allows increasing the hydrophobicity of chitosan materials with initial contact angles up to 114° from 89° for films and up to 154° from 123° for aerogels. We demonstrate that modified aerogels retain contact angles of more than 150° for a long contact time with water while the initial aerogel fully wets for 30 s. The resulting chitosan aerogels have high porosity with a pore size of 100-200 μm, and the pore walls are 0.6-0.7-μm-thick film formations. Our study of lyophilic properties of modified chitosan substrates showed a change in the hydrophobicity of the materials as a function of length of the hydrocarbon radical in the side groups of the (fluoro)alkyl methacrylates in the copolymers. We demonstrate that the rate of biodegradation of the resulting materials decreases with an increase in the number of hydrophobic groups in the modifier. The obtained chitosan materials with hydrophobic coatings have potential as a protective layer for wound dressings with an extended service life.

Fibers and Polymers published new progress about Absorption. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, SDS of cas: 142-90-5.

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

Xu, Qingbo published the artcileFabrication of fluorine-free superhydrophobic cotton fabric using fumed silica and diblock copolymer via mist modification, Synthetic Route of 142-90-5, the main research area is superhydrophobic cotton fabric silica diblock copolymer mist modification.

Immobilizing inorganic particles to improve the roughness or coating with fluorinated agents and polysiloxanes to reduce surface energy is the most popular approach for constructing superhydrophobic cotton fabrics. However, the poor durability, health and environmental concerns, and other serious drawbacks limit the application of superhydrophobic cotton fabrics. In the present work, we describe a simple and facile fabrication strategy to construct robust fluorine-free superhydrophobic surfaces of cotton fabric via a mist technique. The modified cotton fabrics were first immobilized by fumed silica (SiO2) particles to improve the roughness and then covered with a diblock copolymer of poly[(Me methacrylate)-b-(lauryl methacrylate)] (PMMA-b-PLMA), which was synthesized by RAFT polymerization, to reduce the fabric’s surface energy. The mist technol. used ensures that the PMMA-b-PLMA covers the SiO2 particles on the surface of the fabric with a thin coating. Therefore, the SiO2 particles were stably immobilized on the fabric surface without reducing the roughness. As a result, the water contact angle (WCA) values of the prepared cotton fabrics reached reached 156.7°±0.5°. Moreover, even after 1600 abrasion cycles or 80 laundering cycles, the WCA values of the fabric samples were still higher than 150.1°±0.5°. The stable superhydrophobic cotton fabric surfaces are useful for self-cleaning, oil-water separation, and other potential areas.

Progress in Organic Coatings published new progress about Absorption. 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

Ghasemzadeh, Hossein published the artcileNanomagnetic Organogel Based on Dodecyl Methacrylate for Absorption and Removal of Organic Solvents, Formula: C16H30O2, the main research area is nanomagnetic organogel acrylic polymer absorption removal organic solvent.

A novel nanomagnetic organogel was synthesized by in situ emulsion polymerization-crosslinking method using dodecyl methacrylate (DDMA) and styrene (St) as monomers, divinylbenzene (DVB) as a crosslinking agent, azobisisobutyronitrile (AIBN) as an initiator, and Fe3O4 as a nanomagnetic particle. Modification of the network was carried out by inclusion of the multi-walled carbon nanotubes (MWCNT) into the organogel matrix. The structure of the nanocomposite was characterized using FTIR spectroscopy, SEM, TEM, TGA/DTG, VSM, and BET anal. The effects of various parameters such as the amount of crosslinker, initiator, Fe3O4, and reaction time as well as monomer ratio on the oil absorption of the organogel were studied. The synthesized organogel can absorb about 35.5, 22.1, 29.86, 14.58, 17.6, 15.3, and 13.7 g·g-1 of CHCl3, toluene, CH2Cl2, hexane, crude oil, gasoline, and diesel oil, under the optimized polymerization conditions, resp. The nanocomposite organogels can be easily separated by a magnetic field after absorption of organic solvents.

Chinese Journal of Polymer Science published new progress about Absorption. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Formula: C16H30O2.

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

Qian, Jiasheng published the artcileOne-Step Nanoextraction and Ultrafast Microanalysis Based on Nanodroplet Formation in an Evaporating Ternary Liquid Microfilm, SDS of cas: 142-90-5, the main research area is ternary liquid microfilm nanodroplet formation nanoextn microanalysis.

Preconcentration is key for detection from an extremely low concentration solution, but requires separation steps from a large volume of samples using extracting solvents. Here, a simple approach is presented for ultrafast and sensitive microanal. from a tiny volume of aqueous solutions In this approach, liquid-liquid nanoextn. in an evaporating thin liquid film on a spinning substrate is coupled with quant. anal. in one step. The approach is exemplified using a liquid mixture comprising a target compound to be analyzed in water, mixed with extractant oil and co-solvent ethanol. With rapid evaporation of ethanol, nanodroplets of oil form spontaneously in the film. The compounds are highly concentrated by liquid evaporation and meanwhile extracted to nanodroplets. A detection limit of nanomolar to picomolar is demonstrated for fluorescent model compounds in only ≈5μL of solution with the entire process taking ≈10 s. The combination of nanoextn. and IR microscopy also enables simultaneous chem. identification. The dynamics of thin film evaporation are revealed using fast imaging. The principle behind this approach is general, providing a powerful technique for fast and sensitive chem. anal. of a vast library of compounds for environment monitoring, national security, early diagnosis, and many other applications.

Advanced Materials Technologies (Weinheim, Germany) published new progress about Absorption. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, SDS of cas: 142-90-5.

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