Results 141 to 150 of about 292,954 (197)
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Block copolymer synthesis

Current Opinion in Solid State and Materials Science, 1999
The efficient synthesis of structurally well-defined block copolymers is exciting and important area of research. This article describes several methods for the preparation of di- and triblock copolymers. Examples are taken from the literature and include anionic, cationic, free-radical and metal-catalyzed polymerizations that are useful for the ...
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Phase separations in a copolymer–copolymer mixture

Journal of Physics: Condensed Matter, 2005
We propose a three-order-parameter model to study the phase separations in a diblock copolymer–diblock copolymer mixture. The cell dynamical simulations provide rich information about the phase evolution and structural formation, especially the appearance of onion-rings. The parametric dependence and physical reason for the domain growth of onion-rings
Jin-Jun Zhang, Guojun Jin, Yuqiang Ma
openaire   +1 more source

Polyethylene‐based polyurethane copolymers and block copolymers

Macromolecular Symposia, 1995
AbstractLow molecular weight hydroxy terminated polyethylene (HTPE) containing on average an ethyl group every 16–18 carbon atoms, and a hydroxy functionality of 2.6, has been used to prepare polyurethane copolymers and block copolymers which have good solvent resistance. The polymers show somewhat complicated thermal behavior, including Tg's at around
Catherine A. Byrne   +4 more
openaire   +1 more source

Skin delivery by block copolymer nanoparticles (block copolymer micelles)

International Journal of Pharmaceutics, 2015
Block copolymer nanoparticles often referred to as "block copolymer micelles" have been assessed as carriers for skin delivery of hydrophobic drugs. Such carriers are based on organic biocompatible and biodegradable materials loaded with hydrophobic drugs: poly(lactide)-block-poly(ethylene glycol) copolymer (PLA-b-PEG) nanoparticles that have a solid ...
Laredj-Bourezg, Faiza   +6 more
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ALTERNATING COPOLYMER GRAFT COPOLYMERS—XI. GRAFTING THROUGH MATRIX POLYMERIZATION

Pure and Applied Chemistry, 1976
The comonomer complexes generated as a result of the interaction of a donor monomer and an acceptor monomer in the presence of a complexing agent are arrayed in the form of a matrix and undergo radical initiated homopolymerization to yield an alternating copolymer.
Norman G. Gaylord, Tsugikazu Tomono
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Graft Copolymer and Block Copolymer Surfaces

1985
Homopolymers and random copolymers are relatively homogeneous in composition throughout their bulk. At the outermost molecular layer of such materials, the surface chemistry might differ substantially from the average bulk chemistry due to orientation effects, oxidation, or contamination.
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Self-assembly of block copolymers.

Chemical Society Reviews, 2012
Yiyong Mai, A. Eisenberg
semanticscholar   +1 more source

Copolymers

2022
Saviour A. Umoren   +2 more
openaire   +1 more source

Homopolymer-Copolymer and Copolymer-Copolymer Blends

2020
Yuri S. Lipatov, Anatoly E. Nesterov
openaire   +1 more source

Polymersomes: tough vesicles made from diblock copolymers.

Science, 1999
B. Discher   +6 more
semanticscholar   +1 more source

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