Self-assembly of poly(caprolactone-b-ethylene oxide-b-caprolactone) via a microphase inversion in water

Article Abstract:

The self-assembly of triblock copolymer poly(caprolactone-b-ethylene oxide-b-caprolactone) (PCL-PEO-PCL) chains can be induced by adding its THF solution dropwise into an excess of water through a microphase inversion. The PEO shell shrinks as the temperature increases and the micelles are stable at body temperature, which is an important parameter for their biomedical applications.

Copolymers

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Structure evolution in amylopectin/ethylene glycol mixtures by H-bond formation and phase separation studied with dielectric relaxation spectroscopy

Article Abstract:

A study was conducted, by using the broad-band dielectric relaxation spectroscopy, to investigate the interaction between amylopectin, a starch polysaccharide, and ethylene glycol (EG). The result shows that EG binds preferentially to water-free amylopectin (AP) and forms intrachain H-bridges leading to increased chain stiffness and thus an increased glass transition temperature.

Wet corn milling, Starch and Vegetable Fats and Oils Manufacturing, Starch & Natural Chemicals, Starch ex Corn Starch, Electric properties, Starch, Dielectric relaxation

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Water-based latex dispersions. 3. Exchange dynamics of nonionic surfactants and poly(ethylene glycol) on colloidal particles with different interfacial properties

Article Abstract:

The residence times at equilibrium of nonylphenol ethoxylate or of poly(ethylene glycol) (PEG) in silica and in latex dispersions (polystyrene and poly(methyl methacrylate-co-ethyl acrylate) is determined. PEGs of molecular weights comparable to that of the PEG chains in the surfactants are used to investigate the importance of the PEG chain on the residence times.

Molecular dynamics, Atomic properties

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