Oxide pegs

A large number of polymeric compounds have been investigated, but most modem propellants utilize prepolymers that ate hydroxy-functional polybutadienes (HTPB), carboxy-functional polybutadienes (CTPB), or a family of polyethylene oxides (PEGs) to form urethanes. Typical cure reactions... 

Yang and coworkers did the most efforts on the development of network polyester based on citric acid. " They investigated the reaction of citric acid with a series of aliphatic diols (from 3-16 carbon chains) and polyether diols such as polyethylene oxide (PEG), in which 1,8-octanediol (POC) and 1,10 decanediol (PDC) have been studied the most. 

Ethoxylated methylcarboxylates Propoxyethoxy glyceryl sulfonate Alkylpropoxyethoxy sulfate as surfactant, xanthan, and a copolymer of acrylamide and sodium 2-acrylamido-2-methylpropane sulfonate Carboxymethylated ethoxylated surfactants (CME) Polyethylene oxide (PEG) as a sacrificial adsorbate Polyethylene glycols, propoxylated/ethoxylated alkyl sulfates Mixtures of sulfonates and nonionic alcohols Combination of lignosulfonates and fatty amines Alkyl xylene sulfonates, polyethoxylated alkyl phenols, octaethylene glycol mono n-decyl ether, and tetradecyl trimethyl ammonium chloride Anionic sodium dodecyl sulfate (SDS), cationic tetradecyl trimethyl ammonium chloride (TTAC), nonionic pentadecylethoxylated nonylphenol (NP-15), and nonionic octaethylene glycol N-dodecyl ether Dimethylalkylamine oxides as cosurfactants and viscosifiers (N-Dodecyl)trimethylammonium bromide Petrochemical sulfonate and propane sulfonate of an ethoxylated alcohol or phenol Petrochemical sulfonate and a-olefin sulfonate... 

We have shown that polymeric micelles constmcted of block copolymers of poly(ethylene oxide) (PEG) and poly(L-asparate) containing the anticancer dmg (adriamycin, ADR) selectively accumulate at solid tumor sites by a passive targeting mechanism. This is likely due to the hydrophilicity of the outer PEG chains and micellar size (<100 nm) that allow selective tissue interactions [17,18]. Polymeric micelle size ranges are tailored during polymer synthesis steps. Carefully selection of block polymer chemistry and block lengths can produce micelles that inhibit nonselective scavenging by the reticuloendothelial system (RES) and can be utilized as targetable dmg... 

While Wright and co-workers were the first group of researchers to discover that the ether-based polymer poly (ethylene oxide) (PEG) was able to dissolve inorganic salts and exhibit ion conduction at room temperature, " it was the suggestion from Armand et al. that placed these novel materials at the center stage of lithium electrolyte research for more than a decade.The number of comprehensive reviews on this subject could serve as an indicator of the general enthusiasm for these materials during the period. ... 

POLY(ETHYLENE OXIDE), PEG, AND POLY(VINYL PYRROLIDONE), PVP, AS TEMPLATES... 

The most examined monomers for template polymerization have been either acrylic or methacrylic acids. This is probably because many polymers, such as poly(ethylene oxide), PEG, and poly(vinyl pyrrolidone), PVP, form complexes with poly(acrylic acid). 

Ferguson and Shah described polymerization of AA in the presence of polyCethylene oxide), PEG, having mol. weight of 1,500 and 6,000. Polymerizations were carried out in water at 55 and 74°C. Potassium persulphate was used as an initiator. Having examined the influence of template concentration on the rate of polymerization, it was found that the maximum rate appears not at equimolar ratio of monomer to template, but at much lower concentration of the template. Polymerization of AA in the presence of PEG in water at 74°C was treated by the authors as an example of the system in which the interaction between template and the monomer is rather weak. Indeed, only tern-... 

Abbreviations HPMC, hydroxypropyl methyl cellulos PEO, polyethylene oxide PEG, polyethylene glycol. 

Harada et al. explored the compatibility of CD with various polymeric backbones including polyethylene oxide) (PEG), polypropylene oxide) (PPG), polyisobutylene (PIB), and polyethylene (PE) [77-87]. The corresponding polyrotaxanes (36 to 47) were prepared by Method 2, simply by mixing a solution of CD and the polymer. The cavity size of CD was found to be the main factor in the threading process. While one a-CD (20) was threaded per two repeat units in PEG (m/n=0.50) and every three repeat units for PE (m/n=0.333), it was too small for PIB and PPG. On the other hand, two PPG units complexed per /(-CD (21). Because the upper limit of the min value is controlled by the depth of the CD cavity, the m/n value remained constant for the same type of backbone, irrespective of the end group. However, the nature and concentration, i.e., polymer... 

Dispersion copolymerizations that use the poly(ethylene oxide) (PEG) macromonomers 7-13 in alcoholic media have been intensively studied by... 

Eye Scrub (CIBA Vision, Atlanta, GA) PEG-200 glyceryl monotaUowate, disodium laureth sulfosuccinate, cocoamido propyl amine oxide, PEG-78 glyceryl monococoate, benzyl alcohol, EDTA Premoistened pads... 

Tonelli and coworkers [18] prepared two inclusion complexes of the a- and y-cyclodextrin with poly(c-caprolactone) (PCL) and polyethylene oxide (PEG) PCL-PEO-PCL-a-cyclodextrin and PCL-PEO-PCL-y-cyclodextrin. The channel structures of both the triblock inclusion complexes obtained were characterized by several methods (TGA, DSC, X-ray diffraction, FTIR and Solid State NMR spectroscopy). 

Peptide-poly(ethylene glycol) (PEG) block copolymers are ofparticiflar interest, both from a structural and a functional point of view. Poly(ethylene glycol) is also often referred to as poly(ethylene oxide) (PEG). Throughout this article, however, this polyether will be referred to as PEG. In contrast to the hybrid block copolymers discussed in the previous paragraphs, which were based on amorphous synthetic polymers, PEG is a semi-crystalline polymer. In addition to microphase separation and the tendency of the peptide blocks towards aggregation, crystallization of PEG introduces an additional factor that can influence the structure formation of these hybrid block copolymers, furthermore, PEG is an FDA approved biocompatible polymer, which makes peptide-PEG hybrid block copolymers potentially interesting materials for biomedical applications. 

Synthesis of the 2-bromoisobutyrate ester of polylethylene oxide) (PEG-Br) an aqueous ATRP initiator... 

Poly(D(-)-3-hydroxybutyrate miscibility has been reported with polyvinylacetate (PVAC) [Greco and Martuscelli, 1989], poly(p-vinyl phenol) [Xing et al., 1997], and polyethylene-oxide (PEG) [Avella and Martuscelli, 1988]. Phase separation of poly(3-hydroxy butyrate-co-... 

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