Poly 1 - ethy lene

Figure 4 Effect on the serum stability of the incorporation of 5% cholesterol poly(ethy-lene glycol) (PEG) into cationic lipoplexes [hpopolyamine RPR209120/DOPE1/1, ratio (mol) lipid/DNA = 10 in 150 mM NaCl]. Lipoplexes were incubated in DMEM + 10% SVF, at 37°C, aliquots were regularly sampled and monitored by dynamic diffusion. Results represent a mean between three measurements. Error bars are not presented to simplify the graph, but differences among PEG, PEG-1, and PEG-2 are significant. Abbreviations PEG, poly(ethylene glycol) DOPE, dioleylphosphatidylethanolamine DMEM, Dulbecco s Modified Eagle Medium.

Poly (ethy lene oxide)/poly (styrene) block copolymers A comprehensive study of crystallization from solution in PS-PEO diblocks was performed in the late 1960s and early 1970s (Gervais and Gallol 1973a,b Lotz and Kovacs 1966 Lotz et al. 1966). 

Figure 2.13 Variation of the crystal growth rate with temperature for poly(ethy-lene terephlhalate), T , = 280°C. (From Ref. 11.)...

LLDPE butene-1 poly (ethy lene-co-bu tene-1)... 

Vaia, R.A. Vasudevan, S. Krawiec, W. Scanlon, L.G. Giannelis, E.P. New polymer electrolyte nanocomposites melt intercalation of poly(ethy-lene oxide) in mica-type silicates. Adv. Mater. 1995, 7, 154. 

Inhibition of animal cell cultures by ammonia has been overcome by either passing oxygen through a porous poly(tetrafluoroethylene) membrane into the culture or by continuous removal through a membrane of the same material (0.2-Jum pores) to aqueous phosphoric acid on the other side.245 Urea was removed by an anion-exchange membrane clamped over an insolubilized polyvinyl alcohol membrane containing urease.246 No ammonium ion returned back into the feed solution. A urease in poly(ethy-lene-co-vinyl acetate) converted urea on one side to ammonia for recovery on the other.247... 

Kinstler O, et al. Mono-N-terminal poly(ethy-lene glycol)-protein conjugates, Adv Drug Deliv Rev 2002, 54, 477-485. 

Kwok, K., McKenzie, D. L, Evers, D.L., Rice, K.G., Eormulation of highly soluble poly(ethy-lene glycol)-peptide DNA condensates,/. Phar-mac. Sci. 87, 996-1003, 1999. 

Figure 11.5 Structures of polystyrene (PS), poly(methyl methacrylate) (PMMA), poly(ethy-lene terephthalate) (PET), and poly(dimethylsiloxane) (PDMS).

Kissel T, Youxin Li, Unger F. ABA-triblock copolymers from biodegradable polyester A-blocks and hydrophibc poly(ethy-lene oxide) B-blocks as a candidate for in situ forming hydrogel deliveiy systems for proteins. Adv Drug Deliv Rev 2002 54 99-134. 

Harada A, Kataoka K. Novel polyion complex micelles entrapping enzyme molecules in the core preparation of narrowly-distributed micelles from lysozyme and poly(ethy-lene glycol)-poly(aspartic acid) block copolymer in aqueous medium. Macromolecules 1998 31 4208 212. 

Ahn CH, Chae SY, Bae YH, Kim SW. Synthesis of biodegradable multi-block copolymers of poly(L-lysine) and poly(ethy-lene glycol) as a non-viral gene carrier. J Contr Rel 2004 97 567-574. 

Polymer phase-tranrfer catalysts (also referred to as triphase catalysts) are useful in bringing about reaction between a water-soluble reactant and a water-insoluble reactant [Akelah and Sherrington, 1983 Ford and Tomoi, 1984 Regen, 1979 Tomoi and Ford, 1988]. Polymer phase transfer catalysts (usually insoluble) act as the meeting place for two immiscible reactants. For example, the reaction between sodium cyanide (aqueous phase) and 1-bromooctane (organic phase) proceeds at an accelerated rate in the presence of polymeric quaternary ammonium salts such as XXXIX [Regen, 1975, 1976]. Besides the ammonium salts, polymeric phosphonium salts, crown ethers and ciyptates, poly(ethy-lene oxide), and quatemized polyethylenimine have been studied as phase-transfer catalysts [Hirao et al., 1978 Ishiwatari et al., 1980 Mohnari et al., 1977 Tundo, 1978]. 

Poly (ethy lene-co-1 -octene) n-heptane 2005LE1... 

D.H. Jung, Y.K. Ko, and H.T. Jung, Aggregation behavior of chemically attached poly(ethy-lene glycol) to single-walled carbon nanotubes (SWNTs) ropes. Mater. Set Eng. C, 24, 117-121 (2004). 

Fig. 6.16 Schematic iiiustration of a fiexibie polymer laser device consisting of an m-LPPP layer spin-coated onto a two-dimensionally structured flexible poly(ethy-lene terephthalate) substrate. The laser light...

Taton, D. Cloutet, E. Gnanou, Y. Novel amphiphilic branched copolymers based on polystyrene and poly(ethy-lene oxide). Macromol. Chem. Phys. 1998,199, 2501. 

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