Category: 142-90-5

Yuan, Sisi published the artcileEfficient demulsification of cationic polyacrylate for oil-in-water emulsion: Synergistic effect of adsorption bridging and interfacial film breaking, Recommanded Product: Dodecyl 2-methylacrylate, the main research area is oil water emulsion cationic polyacrylate demulsification synergism adsorption film.

The development of reverse demulsifier is an urgent need for the increasing amount of produced liquid in oilfield. Synthesis of reverse demulsifier containing multiple characteristics is an effective method. In view of this, this study reports a series of cationic polyacrylates as the reverse demulsifiers, which were prepared by using 3-chloro-1-propanol to modify the copolymer of acrylate and N-[3-(dimethylamino) propyl] methacryamide (DMAPMA). The properties and performance tests showed that the PMD1 prepared by using Me acrylate (MA) as monomer (mass ratio of MA to DMAPMA was 2:1) has well water solubility, high interfacial activity, and the best demulsification efficiency. For treating the produced liquid from an offshore oilfield, demulsification efficiency of PMD1 was 94.7% with 50 mg/L dosage, which was much higher than that of the reagent in use (15.7%). Furthermore, the demulsification mechanism of PMD1 was studied by oil-water partition coefficient experiment, zeta potential measurement, optical tweezers method, elastic modulus measurement, and coalescence kinetics experiment Prominent demulsification ability of PMD1 was attributed to the synergistic effect of adsorption bridging via cationic group and oil/water interfacial film breaking by acrylate group. The cationic polyacrylate combines the advantages of polyacrylate and polycation reverse demulsifiers, which display a great application prospect in the petroleum industry.

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, Recommanded Product: Dodecyl 2-methylacrylate.

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

Orekhov, Dmitry V. published the artcileMolecular brushes based on copolymers of alkoxy oligo(ethylene glycol) methacrylates and dodecyl(meth)acrylate: features of synthesis by conventional free radical polymerization, COA of Formula: C16H30O2, the main research area is brush copolymer alkoxy oligoethylene glycol methacrylate dodecylmethacrylate radical polymerization.

Abstract: Amphiphilic copolymer mol. brushes of three different types with side chains consisting of alkyl and oligo(ethylene glycol) blocks based on higher alkoxy oligo(ethylene glycol) methacrylates (HAOEGM), methoxy oligo(ethylene glycol) methacrylates (MOEGM) and dodecyl(meth)acrylate have been successfully synthesized via conventional radical polymerization in toluene. In case of the copolymerization of HAOEGM with MOEGM, the monomer reactivity ratios were independent of the structure of higher alkyl groups (C12-C18) and the degree of ethoxylation (n = 6-11) and were equal to 0.76-0.81 and 1.19-1.27, resp. In case of the copolymerization of HAOEGM or MOEGM with dodecyl methacrylate, the reactivity ratios were even closer to each other (1.00-1.17). Applicability of the reactivity ratios calculated at low conversions for estimating copolymer compositions at high conversions was shown. In all systems, compositionally homogeneous copolymers with a narrow mol. weight distribution were formed. For the HAOEGM (C12, n = 9)-dodecyl acrylate monomer system, the reactivity ratios were 0.88 and 0.25 and the resulting copolymers had high compositional heterogeneity.

Polymer Bulletin (Heidelberg, Germany) published new progress about Alcohols, C16-18, ethoxylated Role: RCT (Reactant), RACT (Reactant or Reagent) (ACSE-12, methacrylated). 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

Matsumoto, Mayuko published the artcileSelf-assembly of amphiphilic block pendant polymers as microphase separation materials and folded flower micelles, Product Details of C16H30O2, the main research area is self assembly amphiphilic polymer microphase separation folded flower micelle.

Herein, we created amphiphilic polymers bearing hydrophilic/hydrophobic block pendants as a new class of self-assembled materials for microphase separation in the solid state and forming folded flower micelles in water. For this, we designed amphiphilic block methacrylates comprising hydrophilic poly(ethylene glycol) (PEG) and a hydrophobic dodecyl group: DPEG10MA and DPEG23MA. The DPEG10MA and DPEG23MA homopolymers induced microphase separation of the block pendants. For example, the DPEG23MA homopolymer formed lamellar structures; the hydrophilic and crystallized PEG and hydrophobic dodecyl units are alternately layered with about 14 nm domain spacing. In water, random copolymers of PEG Me ether methacrylate and DPEG10MA folded into flower micelles with both looped and linear PEG shells, where the dodecyl groups of the incorporated DPEG10MA assembled to form hydrophobic cores. The micelles further showed thermoresponsive solubility in water. The size, aggregation number, and cloud point of the micelles were controlled by their composition and chain length.

Polymer Chemistry published new progress about Aggregation. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Product Details of C16H30O2.

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

Zhu, Chen published the artcileTowards nanoparticles with site-specific degradability by ring-opening copolymerization induced self-assembly in organic medium, COA of Formula: C16H30O2, the main research area is nanoparticle degradability ring opening copolymerization self assembly organic medium.

Reversible addition-fragmentation chain transfer (RAFT)-mediated radical ring-opening copolymerization-induced self-assembly (rROPISA) in heptane at 15 weight% solids was successfully applied to the copolymerization of benzyl methacrylate (BzMA) with 2-methylene-1,3-dioxepane (MDO) from a poly(lauryl methacrylate) (PLMA) macro-RAFT agent. Despite less efficient control of the copolymerization compared to similar copolymerization with 2-methylene-4-phenyl-1,3-dioxolane (MPDL) or 5,6-benzo-2-methylene-1,3-dioxepane (BMDO), it yielded stable, diblock copolymer nanospheres (Dz = 100-200 nm) containing tunable amounts of polycaprolactone (PCL)-like degradable units in the core (FMDO = 0.04-0.19), resulting in significant degradation under accelerated hydrolytic conditions. Synthesis of surface-degradable diblock copolymer nanoparticles was then performed through the synthesis of P(LMA-co-BMDO) and P(LMA-co-MPDL) macro-chain transfer agents (CTAs). Even though partial livingness during chain extension with BzMA by PISA was noticed, stable nanospheres were obtained for FBMDO = 0.05 and porous nanospheres for FBMDO = 0.08-0.09, whose average diameters increased with the BMDO content. Attempts to prepare “”all-degradable”” vinyl particles were also made by rROPISA of BzMA and BMDO (or MPDL) from degradable macro-CTAs showing degradation in agreement with the copolymers’ expected structure.

Polymer Chemistry published new progress about Chain transfer agents. 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

Kozawa, Susan K. published the artcileSelf-assembly of amphiphilic ABA random triblock copolymers in water, COA of Formula: C16H30O2, the main research area is self amphiphilic aba random triblock copolymer water.

Self-assembly of amphiphilic ABA random triblock copolymers in water serves as a novel approach to create unique structure micelles connected with flexible linkages. The ABA triblock copolymers consist of amphiphilic random copolymers bearing hydrophilic poly(ethylene glycol) and hydrophobic dodecyl pendants as the A segments and a hydrophilic poly(ethylene oxide) (PEO) as the middle B segment. The A block is varied in dodecyl methacrylate content of 20%-50% and d.p. (DP) of 100-200. By controlling the composition and DP of the A block, various architectures can be tailor-made as micelles in water: PEO-linked double core unimer micelles, PEO-looped unimer or dimer micelles, and multichain micelles. Those PEO-linked or looped micelles further exhibit thermoresponsive solubility in water. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about Amphiphiles. 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

Wang, Chen-Gang published the artcileMetal-Free Fast Azidation by Using Tetrabutylammonium Azide: Effective Synthesis of Alkyl Azides and Well-Defined Azido-End Polymethacrylates, Synthetic Route of 142-90-5, the main research area is Metal fast azidation tetrabutylammonium alkyl azide azido end polymethacrylate; azides; cycloaddition; green chemistry; polymers; synthesis design.

An effective method to synthesize azido-end polymethacrylates from tetrabutylammonium azide (BNN3) in a nonpolar solvent (toluene) was developed. Several low-mass alkyl halides were reacted with BNN3 in toluene as model reactions and the rate constants of these reactions were determined, to confirm fast BNN3 azidation for tertiary and secondary halides. The end-group transformation of halide-end polymethacrylates was effective and nearly quant. Notably, the combination of organocatalyzed living (or reversible deactivation) radical polymerization and BNN3 azidation enabled the metal-free synthesis of azido-end polymethacrylates, including single-azido-end and multi-azido-end functional homopolymers and block copolymers. The rapid and quant. reaction without the requirement for a large excess of BNN3, metal-free and polar-solvent-free nature, and broad polymer scope are attractive features of this azidation.

Chemistry – A European Journal published new progress about Azidation. 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

Patil, Naganatha published the artcileOrthogonally grown polycarbonate and polyvinyl block copolymers from mechanistically distinct (co)polymerizations, COA of Formula: C16H30O2, the main research area is polycarbonate polyvinyl block copolymer.

Mechanistically distinct polymerization systems can afford unique block copolymers that would not be accessible by mere sequential polymerization Herein we report a convenient one-pot synthesis of miscellaneous di- and triblock copolymers comprising CO2-based and polyvinyl blocks, obtained orthogonally through triethylborane (TEB)-mediated ring opening copolymerization (ROCOP) of CO2 with epoxides on the one hand and reversible addition fragmentation chain transfer (RAFT) polymerization of vinyl monomers on the other. 4-Cyano-4-[(dodecylsulfanylthiocarbonyl) sulfanyl] pentanoic acid (TTC-COOH), which carries a trithiocarbonate function and a carboxylic acid group, played the dual role of a chain transfer agent for RAFT polymerization and an initiator for the ROCOP of CO2/epoxide. Different bases such as tetrabutylammonium hydroxide, N-heterocyclic carbene (NHC), and tributylamine (TBA) were used for the deprotonation of TTC-COOH. It was found that the salts produced in situ by the deprotonation of TTC-COOH using NHC and TBA did not harm trithiocarbonate functions. The two distinct polymerizations occurred as expected, affording a series of well-defined CO2-based AB and ABC block copolymers comprising one or two poly(vinyl) blocks, depending upon the choice of different combinations of epoxides and vinyl monomers. The thermal characterization of these AB and ABC block copolymers revealed either two or three glass transition temperatures indicative of phase-separated materials.

Polymer Chemistry published new progress about Acrylic polymers, polycarbonate-, block, triblock Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation). 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

Imai, Shota published the artcileSelf-Sorting of Amphiphilic Copolymers for Self-Assembled Materials in Water: Polymers Can Recognize Themselves, Computed Properties of 142-90-5, the main research area is self sorting amphiphilic copolymer micelle assembly hydrogel.

Amphiphilic random copolymers bearing hydrophilic poly(ethylene glycol) (PEG) and hydrophobic alkyl pendants showed dynamic self-sorting behavior, i.e., self-recognition, under competitive conditions in aqueous media. The self-sorting universally takes place not only in water but also in hydrogels and on the material surfaces, according to encoded information originating from the primary structure of composition and pendants. Binary blends of the copolymers with different composition or alkyl pendants readily induced composition- or alkyl pendant-dependent self-sorting to simultaneously provide discrete and size-controlled micelles with hydrophobic cores. Surprisingly, the micelles reversibly keep exchanging polymer chains exclusively between identical polymer micelles even in the presence of different counterparts. Owing to the dynamic self-sorting behavior, ABA-triblock copolymers comprising the amphiphilic random copolymer A segments and a hydrophilic PEG chain B segment further provided hydrogels with self-healing yet selectively adhesive properties.

Journal of the American Chemical Society published new progress about Acrylic polymers, polyoxyalkylene-, graft Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation). 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Computed Properties of 142-90-5.

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

Matsumoto, Mayuko published the artcileOrthogonal Folding of Amphiphilic/Fluorous Random Block Copolymers for Double and Multicompartment Micelles in Water, Related Products of esters-buliding-blocks, the main research area is folding amphiphilic fluorous random copolymer micelle.

Here, we report orthogonal folding and self-assembly systems of amphiphilic/fluorous random block copolymers for double core and multicompartment micelles in water. For this, we developed the precision folding techniques of polymer chains via the selective self-assembly of the pendant groups. Typically, A/C-B/C random block copolymers were designed: Hydrophobic dodecyl groups (A) and fluorous fluorinated octyl groups (B) were introduced into the resp. blocks, while hydrophilic poly(ethylene glycol) chains (C) were randomly incorporated into all the segments. By controlling the chain length and composition of the resp. blocks, the copolymers induce orthogonal single-chain folding in water to form double-compartment micelles comprising hydrophobic and fluorous cores. The copolymers were site-selectively folded in a fluoroalc. to result in tadpole unimer micelles comprising a hydrophobic A/C unimer micelle and an unfolded fluorous B/C chain. Addnl., asym. A/C-B/C random block copolymers with short and highly hydrophobic or fluorous segments were effective for multicompartment micelles in water.

ACS Macro Letters published new progress about Acrylic polymers, polyoxyalkylene-, fluorine-containing, block, triblock, graft Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation). 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

Seo, Jin Young published the artcilePorphyrin-cored amphiphilic star block copolymer photocatalysts: Hydrophobic-layer effects on photooxidation, HPLC of Formula: 142-90-5, the main research area is porphyrin amphiphilic star block copolymer photocatalyst photooxidation.

Pd-contained porphyrin-cored (P(Pd)) amphiphilic star block copolymers with a hydrophobic interior, including either poly(Me methacrylate) (PMMA) or poly(dodecyl methacrylate) (PDMA), and poly(ethylene glycol) Me ether methacrylate (PEGMA) hydrophilic outer layer were synthesized by Ru-catalyzed atom transfer radical polymerization (ATRP). The acquired star polymer photocatalysts were examined for photooxidation of furfural. The star polymers with the PDMA hydrophobic interior led to higher efficiency in the photooxidation of furfural than the star polymers without hydrophobic interior and with the PMMA interior. In addition, the grater hydrophobic PDMA fraction exhibited a higher photooxidation efficiency. Those exptl. demonstrated the importance of the hydrophobic interior toward efficient photooxidation We believe that this study provides a fundamental idea in developing amphiphilic star block copolymer photocatalysts.

Materials Letters published new progress about Amphiphiles. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, HPLC of Formula: 142-90-5.

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