Results 301 to 310 of about 358,104 (333)
Some of the next articles are maybe not open access.
Thermoresponsive copolymer microgels
Journal of Materials Chemistry B, 2013Colloidal aqueous microgels have attracted notable attention due to their possible applications in both polymer chemistry and the (bio)material sector. Due to their soft internal network structure and their response to different external stimuli, they are suitable as carrier systems for different kinds of molecules (e.g.
Hertle, Yvonne, Hellweg, Thomas
openaire +2 more sources
Polyhydroxyalkanoates based copolymers
International Journal of Biological Macromolecules, 2019Polyhydroxyalkanoates (PHAs) belong to a family of natural polyesters and are produced under unbalanced growth conditions as intracellular carbon and energy reserves by a wide variety of microorganisms. Being biodegradable, biocompatible and environmental friendly thermoplastics, the PHAs are considered as future polymers to replace petrochemicals ...
Asit Baran, Samui, Tapan, Kanai
openaire +2 more sources
Journal of the American Chemical Society, 2019
In this report, we merge block copolymers with vitrimers in an effort to realize the prospect of higher-order, nanoscale control over associative cross-link exchange and flow. We show the use of controlled polymerization as a vital tool to understand fundamental structure-property effects through the precise control of polymer architecture and ...
Jacob J. Lessard +5 more
openaire +2 more sources
In this report, we merge block copolymers with vitrimers in an effort to realize the prospect of higher-order, nanoscale control over associative cross-link exchange and flow. We show the use of controlled polymerization as a vital tool to understand fundamental structure-property effects through the precise control of polymer architecture and ...
Jacob J. Lessard +5 more
openaire +2 more sources
Miscibility Study in Fluorinated Tetrafluoroethylene Copolymer−Copolymer Blends
Macromolecules, 2001The miscibility of random fluorinated tetrafluoroethylene copolymers is investigated by differential scanning calorimetry (DSC) and X-ray diffraction (XRD). In particular, mixtures composed of poly(tetrafluoroethylene)-co-(hexafluoropropylene) (FEP) containing 1 mol % of comonomer and poly(tetrafluoroethylene)-co-(perfluoromethylvinyl ether) (PFMVE ...
R. PUCCIARIELLO +2 more
openaire +2 more sources
Orienting Block Copolymer Microdomains with Block Copolymer Brushes
ACS Nano, 2012A simple, rapid, and robust technique for controlling the self-assembly of block copolymers (BCPs) with a large segmental interaction parameter, χ, is described using a surface modified with anchored BCP brushes. End-functionalized poly(styrene-b-ethylene oxide)s (PS-b-PEOs), where the fraction of PS (f(PS)) was varied, end-functionalized neat PS, and ...
Weiyin, Gu +2 more
openaire +2 more sources
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 ...
openaire +1 more source
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 ...
openaire +1 more source
Phase separations in a copolymer–copolymer mixture
Journal of Physics: Condensed Matter, 2005We 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, 1995AbstractLow 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, 2015Block 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
openaire +3 more sources
ALTERNATING COPOLYMER GRAFT COPOLYMERS—XI. GRAFTING THROUGH MATRIX POLYMERIZATION
Pure and Applied Chemistry, 1976The 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
openaire +1 more source