Synthesis of heterobifunctional polyethylene glycols: Polymerization from functional initiators
نویسندگان
چکیده
منابع مشابه
Microbial degradation of polyethylene glycols.
Mono-, di-, tri-, and tetraethylene glycols and polyethylene glycols (PEG) with molecular weight up to 20,000 were degraded by soil microorganisms. A strain of Pseudomonas aeruginosa able to use a PEG of average molecular weight 20,000 was isolated from soil. Washed cells oxidized mono- and tetraethylene glycols, but O2 consumption was not detectable when such cells were incubated for short per...
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Quantum-chemical calculations and in vitro experiments have demonstrated that polysaccharides are able to adsorb mononucleotides due to the formation of hydrogen bonds. The subsequent dehydration of polysaccharide-nucleotide complexes in the physiologically acceptable temperature range results in the creation of “correct” DNA polymers that are “recognized” by the specific DNA-polymerases. DNA f...
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Particles of linear polyethylene (M(n) = (2-3) x 10(3) g x mol(-)(1); M(w)/M(n) = 2-4) obtained by catalytic emulsion polymerization of ethylene possess a nonspherical, lentil-like shape with an average aspect ratio of ca. 10 and diameters from 30 to >300 nm, as determined by TEM and AFM. The particle structure results from a stacking of the lamellae along the one shorter axis of the lentils (i...
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15 صفحه اولMechanism of Precipitation of Proteins by Polyethylene Glycols
The apparent solubilities of various proteins (14,000 to 670,000 daltons) were measured in the presence of polyethylene glycols (PEGS) of different sizes. All of the solubility curves, determined by measur ing the protein concentration in the supernate of centrifuged mixtures, exhibited the characteristic linear dependence of log S (g/liter) on PEG concentration (%, w/v). For human albumin in P...
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ژورنال
عنوان ژورنال: Polymer
سال: 2016
ISSN: 0032-3861
DOI: 10.1016/j.polymer.2016.10.015