Category: 2479-62-1

Liu, Fangyao published the artcileAtom transfer radical polymerization as a tool for making poly(N-acryloylglycinamide) with molar mass independent UCST-type transitions in water and electrolytes, Category: amides-buliding-blocks, the publication is Polymer Chemistry (2013), 4(10), 3123-3131, database is CAplus.

Atom transfer radical polymerization (ATRP) of N-acryloylglycinamide has been used as a tool to make poly(NAGA) showing UCST-type phase transitions in water and electrolytes independent of molar mass and end-groups. We hypothesized that similarity in the structure of polymer chain ends with the repeat unit of poly(NAGA) could help in eliminating the effect of molar mass dependence of the cloud point especially in the low molar mass region. The monomer-like end-groups were introduced by choosing an appropriate initiator for ATRP like chloropropionamide (CPA). The catalyst system CuCl/CuCl₂ and tris[2-(dimethylamino)ethyl]-amine (Me₆TREN) as a ligand provided controlled polymerization of NAGA in DMSO at 45° with UCST-type transitions retained in water and electrolytes without being influenced by chain ends/M mass and high concentration of salts like NaCl and Na₂SO₄.

Polymer Chemistry published new progress about 2479-62-1. 2479-62-1 belongs to amides-buliding-blocks, auxiliary class Monomers,Acrylamide Monomers, name is N-(2-Amino-2-oxoethyl)acrylamide, and the molecular formula is C5H8N2O2, Category: amides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Liu, Fangyao published the artcileA Non-ionic Thermophilic Hydrogel with Positive Thermosensitivity in Water and Electrolyte Solution, Formula: C5H8N2O2, the publication is Macromolecular Chemistry and Physics (2014), 215(15), 1466-1472, database is CAplus.

The first example of a chem. crosslinked synthetic non-ionic hydrogel showing reversible pos. swelling behavior in pure water as well as electrolyte solution is highlighted. Homopolymeric hydrogels are synthesized from N-acryloylglycinamide with N,N’-methylenbis(acrylamide) as a chem. crosslinker via free radical polymerization in DMSO. The swelling-ratio dependency of the hydrogels upon temperature as well as on the amounts of crosslinker from 1 to 4.8 mol% is studied. With 1 mol% crosslinker, the hydrogel is able to take up over three times water of its weight at 37 °C in pure water and phosphate-buffered saline. All the samples show almost 100% of reversibility for at least 6 d up to 37 °C irresp. of the amount of the crosslinker, making them promising candidates for biomedical applications. The sample with a higher amount of crosslinker, i.e., 4.8 mol% is even stable for over 6 d at 70 °C.

Macromolecular Chemistry and Physics published new progress about 2479-62-1. 2479-62-1 belongs to amides-buliding-blocks, auxiliary class Monomers,Acrylamide Monomers, name is N-(2-Amino-2-oxoethyl)acrylamide, and the molecular formula is C5H8N2O2, Formula: C5H8N2O2.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Liu, Fangyao published the artcileControlled radical polymerization of N-acryloylglycinamide and UCST-type phase transition of the polymers, Name: N-(2-Amino-2-oxoethyl)acrylamide, the publication is Journal of Polymer Science, Part A: Polymer Chemistry (2012), 50(23), 4920-4928, database is CAplus.

N-Acryloylglycinamide was polymerized via the reversible addition fragmentation transfer process without sacrificing its key property, the upper critical solution temperature in water. This could be achieved by choosing an appropriate nonionic initiator [2,2′-azobis(4-methoxy-2.4-dimethyl valeronitrile) (V-70)] and nonionic chain-transfer agent (cyanomethyl dodecyl trithiocarbonate). A good molar mass control was accomplished as proved by the linear increase of molar mass with conversion, a chain extension experiment, and low dispersity. The influence of molar mass, polymer end groups, or salt concentration on the cloud point was analyzed by turbidimetry. Polymer end groups exerted a distinct effect on the cloud points, whereas the influence increased with decreasing molar masses. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about 2479-62-1. 2479-62-1 belongs to amides-buliding-blocks, auxiliary class Monomers,Acrylamide Monomers, name is N-(2-Amino-2-oxoethyl)acrylamide, and the molecular formula is C5H8N2O2, Name: N-(2-Amino-2-oxoethyl)acrylamide.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Hass, Howard C. published the artcileThermally reversible homopolymer gel systems, Formula: C5H8N2O2, the publication is Journal of Polymer Science (1964), 2(Pt. B;12), 1095-6, database is CAplus.

A mixture of 15 g. glycinamide-HCl, 100 ml. Et₂O, and 14.6 g. CH₂:CHCOCl was treated at 0-5° with a solution of 38 g. K₂CO₃ in 40 ml. H₂O. The mixture was stirred 1 hr., the aqueous layer evaporated in vacuo at 35°, and the residue recrystallized from Me₂CO to yield 12 g. N-acetamidoacrylamide, m. 129° (I). N-Acetamidomethacrylamide, m. 138°, was similarly prepared The monomers polymerized readily in H₂O or alc. in the presence of radical producing catalysts. The polymers are soluble in H₂O and yield thermally reversible gels. Thus, a 5% solution of polymer, prepared from I in alc., afforded a gel which melted sharply at 38.9° and reformed at 35.6°. The polymers are compatible with photographic gelatin solutions and, like gelatin, can be hardened by HCHO or dialdehydes.

Journal of Polymer Science published new progress about 2479-62-1. 2479-62-1 belongs to amides-buliding-blocks, auxiliary class Monomers,Acrylamide Monomers, name is N-(2-Amino-2-oxoethyl)acrylamide, and the molecular formula is C5H8N2O2, Formula: C5H8N2O2.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Zhang, YaHan published the artcileA hyperbranched polymer-based water-resistant adhesive: Durable underwater adhesion and primer for anchoring anti-fouling hydrogel coating, Safety of N-(2-Amino-2-oxoethyl)acrylamide, the publication is Science China: Technological Sciences (2022), 65(1), 201-213, database is CAplus.

Direct deployment of gluing and achieving durable robust adhesion in water is challenging due to difficulty in repelling interface water. This work reports a novel hyperbranched polymer-based water-resistant adhesive (HBPBA) based on Michael addition reaction of multi-vinyl monomers with dopamine and 3-aminophenylboronic acid. Upon encountering water, the HBPBA forms coacervates whose hydrophobic chains aggregate to displace interface water, and meanwhile the catechols exposing outwards contribute to underwater adhesion. The HBPBA can strongly glue diverse substrates including PTFE, PE, PET, ceramic, Ti and stainless steel. The HBPBA can maintain stable adhesion in different environments, such as tap water, simulated sea water, PBS, and a wide range of pH solutions (pH 2 to 10) for 3 mo, supposedly due to the complexation of catechol with boronic acid. Intriguingly, HBPBA film can be bonded to the titanium surface as a primer, which firmly anchors the antifouling PNAGA-PCBAA hydrogel coating through copolymerization of remaining double bonds in HBPBA and NAGA plus CBAA. The PNAGA-PCBAA hydrogel-modified titanium is biocompatible and shows outstanding antifouling ability both in vitro and in vivo. This work proposes a new strategy for creating underwater deployable and water-resistant adhesives that may find promising applications in engineering and biomedical fields.

Science China: Technological Sciences published new progress about 2479-62-1. 2479-62-1 belongs to amides-buliding-blocks, auxiliary class Monomers,Acrylamide Monomers, name is N-(2-Amino-2-oxoethyl)acrylamide, and the molecular formula is C13H18N2, Safety of N-(2-Amino-2-oxoethyl)acrylamide.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics