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Summary In this study, organic-inorganic hybrid monomer, poly silicic acid urethane methacrylate (PSUMA), was prepared by reaction of poly silicic acid extracted from sodium silicate aqueous solution with THF and 2-(methacryloyloxy)ethyl isocyanate. The PSUMA was copolymerized with methyl methacrylate to obtain hybrid copolymers. The material properties such as mechanical properties, thermal properties,...
Association behavior and physical gelation mechanism of ABA triblock copolymer dissolved in B-selective solvent have been studied systematically from dilute to moderately concentrated solutions. Static and dynamic light scattering and nuclear magnetic resonance measurements for dilute solutions of poly(methyl methacrylate)-block-poly(tert-butyl acrylate)-block-poly(methyl methacrylate) (PMMA-PtBuA-PMMA)...
Aggregation behavior of hydrophobically modified ethyleneglycol oligomer, poly(ethylene glycol) monododecyl ether (C12E25), in aqueous solution has been studied in wide ranges of concentration and temperature by means of light scattering, X-ray scattering, and linear-viscoelastic measurements. C12E25 forms stable micelles in dilute solution. It is found that the micellar solution exhibits the sol–gel...
Phase behaviour is investigated for ternary solutions composed of rodlike α-helical poly(α,l-glutamate) having triethylene glycol monomethyl ether at the end of the side chains (P3EGLG), randomly-coiled poly(ethylene glycol), and N,N-dimethylformamide (DMF) as solvent. The solution containing lower molecular weight poly(ethylene glycol) (PEG10) separates into an isotropic phase, which is rich in...
Compatibility was investigated for blends of one-end-aminated polystyrene (APS) and one-end-sulfonated poly(ethylene glycol) (SPEG) in toluene with changing the association strength and the segment interaction by varying the total polymer concentration. Weight-average molecular weight of APS and SPEG were 5600 and 5700, respectively. Cloud-point concentrations at fixed temperature were measured...
Small-angle X-ray scattering (SAXS) profiles have been measured for blends of one-end-aminated polystyrene (APS) and one-end-car☐ylated or -sulfonated poly(ethylene glycol) (CPEG or SPEG) with weight fraction of 50/50 per cent. In the profiles of blend solutions in toluene (TL), PS/CPEG/TL and APS/SPEG/TL with solvent weight fraction of 0.2 at 80°C, there exists a scattering maximum around a Bragg...
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