Polycaprolactone-based block copolymers: 4. Interfacial activity in poly(vinyl chloride) containing polyblends
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چکیده
منابع مشابه
Interfacial stabilization of bilayered nanolaminates by asymmetric block copolymers
Block copolymers are macromolecular surfactants that self-assemble into a variety of nanostructural elements or reduce the interfacial tension between incompatible polymers. Here, we examine the ability of diblock copolymers differing in composition to stabilize bilayered homopolymer nanolaminates on flat solid supports. In this arrangement, self-assembly competes with interfacial modification ...
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Pluronic block copolymers (triblock copolymers of poly(ethylene oxide) and poly(propylene oxide)) exhibit a chemosensitizing effect on multidrug resistant cell lines. Changes in membrane permeability are hypothesized to be responsible because inhibition of drug transport mediated by both the multidrug-resistance-associated protein and the P-glycoprotein drug efflux system has been observed. To ...
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A class of dialkoxyanthracene-containing diblock copolymers is synthesized which possesses visible light-responsivity. These copolymers can self-assemble into a micellar structure in water. Green visible light (540 nm) is able to scissor these anthracene species and cleave the diblock copolymer into two fragments, inducing disassembly of the self-assembled micelles.
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Photoresponsive block copolymers (PRBCs) containing azobenzenes and other chromophores can be easily prepared by controlled polymerization. Their photoresponsive behaviors are generally based on photoisomerization, photocrosslinking, photoalignment and photoinduced cooperative motions. When the photoactive block forms mesogenic phases upon microphase separation of PRBCs, supramolecular cooperat...
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In this communication, the synthesis and characterization of thermo- and light responsive block copolymers is reported. PEO-b-PNIPAM polymers with azobenzene moieties were prepared and analyzed by turbidimetry, fluorescence, NMR and DLS measurements. A temperature controlled reversible formation as well as a light induced disruption and reformation of micellar structures in water was found.
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ژورنال
عنوان ژورنال: Polymer
سال: 1990
ISSN: 0032-3861
DOI: 10.1016/0032-3861(90)90153-p