Results 271 to 280 of about 48,944 (309)
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Preparation and characterization of poly(ethylene-graft-ethylene oxide)
Journal of Applied Polymer Science, 1996Graft copolymers containing poly(ethylene oxide) side chains attached to a polyethylene backbone were prepared by coupling of poly(ethylene-co-acrylic acid) (PEAA) and poly(ethylene oxide) monomethyl ethers (MPEO) by esterification in o-xylene at 140°C. The MPEO side chains had molecular weights of 750 to 5000.
Åsa Halldén, Bengt Wesslén
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Macromolecules, 1995
Phase behavior of ethylene oxide (EO)-propylene oxide (PO)-ethylene oxide triblock copolymers in water has been investigated, by using 2 H NMR and polarizing microscopy, as functions of both concentration and temperature. Seven copolymers, having wide variations of composition and molecular weight, are used.
Kewei Zhang, Ali Khan
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Phase behavior of ethylene oxide (EO)-propylene oxide (PO)-ethylene oxide triblock copolymers in water has been investigated, by using 2 H NMR and polarizing microscopy, as functions of both concentration and temperature. Seven copolymers, having wide variations of composition and molecular weight, are used.
Kewei Zhang, Ali Khan
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Poly(ethylene oxide) macromonomers
Polymer Bulletin, 1986Le macromere polyoxyde d'ethylene termine par un groupe p-vinylbenzyl est copolymerise avec le styrene dans le benzene, THF a 60 ...
Koichi Ito +5 more
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Journal of Chemical Theory and Computation, 2006
We present a multiscale modeling approach for simulation of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer micelles in aqueous solution. We rely on systematic elimination of computationally expensive degrees of freedom yet retain implicitly their influence on the remaining degrees freedom in a coarser-grained model ...
Dmitry, Bedrov +2 more
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We present a multiscale modeling approach for simulation of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer micelles in aqueous solution. We rely on systematic elimination of computationally expensive degrees of freedom yet retain implicitly their influence on the remaining degrees freedom in a coarser-grained model ...
Dmitry, Bedrov +2 more
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Journal of Colloid and Interface Science, 2004
The effects caused by poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO; Pluronic) copolymers on the structure and stability of dioleoylphosphatidylethanolamine (DOPE) liposomes were studied by means of turbidity, leakage, and cryo-transmission electron microscopy investigations.
Nill, Bergstrand, Katarina, Edwards
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The effects caused by poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO; Pluronic) copolymers on the structure and stability of dioleoylphosphatidylethanolamine (DOPE) liposomes were studied by means of turbidity, leakage, and cryo-transmission electron microscopy investigations.
Nill, Bergstrand, Katarina, Edwards
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Journal of Controlled Release, 2001
Experimental and mathematical studies were performed to understand the release mechanism of small molecular weight compounds from poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) polymer gels (trademarked Pluronic by BASF Corp.) of various concentrations.
B C, Anderson +2 more
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Experimental and mathematical studies were performed to understand the release mechanism of small molecular weight compounds from poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) polymer gels (trademarked Pluronic by BASF Corp.) of various concentrations.
B C, Anderson +2 more
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Miscibility of polystyrene with poly(ethylene oxide) and poly(ethylene glycol)
Journal of Applied Polymer Science, 1998The intrinsic viscosity of polystyrene-poly(ethylene oxide) (PS-PEO) and PS-poly(ethylene glycol) (PEG) blends have been measured in benzene as a function of blend composition for various molecular weights of PEO and PEG at 303.15 K. The compatibility of polymer pairs in solution were determined on the basis of the interac- tion parameter term, Db, and
Abdel‐Azim A. Abdel‐Azim +3 more
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2009
Abstract Introduction New types of linear low-density polyethylenes (LLDPE) based on the metallocene catalyst technology was introduced in the market place in 1991. There are now a number of well-established metallocene PE families commercially available and new products are constantly being introduced into the marketplace.
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Abstract Introduction New types of linear low-density polyethylenes (LLDPE) based on the metallocene catalyst technology was introduced in the market place in 1991. There are now a number of well-established metallocene PE families commercially available and new products are constantly being introduced into the marketplace.
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Journal of Polymer Science Part A: Polymer Chemistry, 2002
AbstractPoly(ethylene oxide/polylactide/poly(ethylene oxide) (PEO/PL/PEO) triblock copolymers, in which each block is connected by an ester bond, were synthesized by a coupling reaction between PL and PEO. Hydroxyl‐terminated PLs with various molecular weights were synthesized and used as hard segments.
Soo‐Hong Lee +3 more
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AbstractPoly(ethylene oxide/polylactide/poly(ethylene oxide) (PEO/PL/PEO) triblock copolymers, in which each block is connected by an ester bond, were synthesized by a coupling reaction between PL and PEO. Hydroxyl‐terminated PLs with various molecular weights were synthesized and used as hard segments.
Soo‐Hong Lee +3 more
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Heterobifunctional poly(ethylene oxide)
Polymer Bulletin, 1994Well-defined poly(ethylene oxide)s with a primary amino group at one end and a hydroxyl group at the other terminus were synthesized with new sila-protected amino functionality initiator, potassium N-[2-(2,2,5,5-tetramethyl-1-aza-2,5-disilacyclopentyl)-ethyl]methyl amide [1b].
Yong Joo Kim +6 more
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