27 research outputs found
On the helical form in syndiotactic poly(methyl methacrylate) thermoreversible gels as revealed by small-angle neutron scattering
No full textEffect of a Miscible Polymeric Diluent on Complex Formation between Isotactic and Syndiotactic Poly(methyl methacrylate)
No full textNMR Study of Thermoresponsive Hyperbranched Polymer in Aqueous Solution with Implication on the Phase Transition
No full textStudy of Poly(methyl methacrylate) Stereocomplexes by Size Exclusion Chromatography and Dynamic Light Scattering
No full textPerpendicularly Oriented Block Copolymer Thin Films Induced by Neutral Star Copolymer Nanoparticles
No full textTemperature Dependence of Hydrophobically End-Capped Poly(ethylene oxide): End Chain Effect using 13C MAS NMR
No full textStereocomplexation and monolayer morphologies of a stereoregular poly(methylmethacrylate) mixture formed at the air/water surface
Full text linkThe stereocomplexation of stereoregular PMMA at the air/water interface was proved by structure determination using reflection-absorption IR and grazing incidence X-ray diffraction. Morphological studies on LB films of i- and s-PMMA blends with different ratios help to disclose the stereocomplexation process of stereoregular PMMA at the air/water interface. It was found that the stereocomplexes exist in particle aggregates randomly dispersed at the air/water interface. In the systems with the i:s ratio deviated from 1:2, the molecules, either i-PMMA or s-PMMA, that do not participate in the stereocomplexation build separate layer surrounding the stereocomplexes. This layer is much thinner than the particle aggregates of the stereocomplexes. If the i-PMMA molecules are rich in this thinner layer, crystallization of i-PMMA takes place, which generates lamellar structure besides the stereocomplexes.<br /
Study of Phase Separation of Poly(vinyl methyl ether) Aqueous Solutions with Rayleigh Scattering Technique
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