Zobrazeno 1 - 10
of 242
pro vyhledávání: '"Tadao Kotaka"'
Autor:
Tadao Kotaka, Kunihiro Osaki
Publikováno v:
Journal of Polymer Science Part C: Polymer Symposia. 15:453-479
Complex dynamic shear moduli, shear and normal stresses in steady shearing flow, and complex moduli with superposed steady shear are investigated in both theoretical and experimental aspects. Firs) it summary of phenomenological and molecular theorie
Publikováno v:
Macromolecules. 36:1656-1664
The elongational flow-induced morphological change of a triblock copolymer melt of polystyrene-b-poly(ethylene butylene)-b-polystyrene (SEBS) with polystyrene (PS) weight fraction of 30% has been i...
Autor:
Pralay Maiti, Hirotaka Okamoto, Arimitsu Usuki, Naoki Hasegawa, Tadao Kotaka, Mitsuko Takada, Masami Okamoto, Pham Hoai Nam, Takashi Nakayama, Masahiro Ohshima
Publikováno v:
Polymer Engineering & Science. 42:1907-1918
Polypropylene (PP)/clay nanocomposites (PPCNs) were autoclave-foamed in a batch process. Foaming was performed using supercritical CO 2 at 10 MPa, within the temperature range from 130.6°C to 143.4°C, i.e., below the melting temperature of either P
Publikováno v:
Polymer Engineering & Science. 42:1864-1871
The effect of crystallization on the structure and morphology of maleic anhydride grafted polypropylene (PP-MA)/clay (montmorillonite) nanocomposites (PPCNs) is presented. Wide-angle X-ray diffraction (WAXD) measurements of PPCNs crystallized at diff
Publikováno v:
Polymer. 42:9827-9835
Strain-induced hardening behavior and flow birefringence were studied on copolymers of ethylene–tetracyclododecene (E–TD) and ethylene–norbornene (E–NB) of various compositions subjected to uniaxial elongation with constant Hencky strain rate
Publikováno v:
Polymer. 42:9633-9640
We have prepared the intercalated nanocomposites of polypropylene (PP)/clay (PPCNs) successfully using maleic anhydride modified PP (PP-MA) and organophilic clay via melt extrusion process. The hierarchical structure of the PPCNs from the structure o
Publikováno v:
Nano Letters. 1:295-298
This Letter describes the first real space observation for the formation of a house of cards structure in polypropylene/clay nanocomposite melt under elongational flow by TEM analysis. Both strong strain-induced hardening and rheopexy features are or
Publikováno v:
Polymer. 42:3939-3942
Simultaneous measurements of transient tensile stress σ( ϵ 0 ;t) and birefringence Δ n( ϵ 0 ;t) were conducted under uniaxial elongation with constant Hencky strain rate ϵ 0 on new olefin-copolymer of ethylene (E) and tetracyclododecene (TD) of
Publikováno v:
Polymer. 42:3223-3231
Elongational flow behavior of a polystyrene-block-poly(ethylene butylene)-block-polystyrene (SEBS) triblock copolymer melt with cylindrical morphology is investigated by elongational flow opto-rheometry (EFOR), transmission electron microscopy (TEM)
Publikováno v:
Polymer. 42:2685-2688
We examined the correlation between the internal structure and the ionic conductivity behavior of lipophilized smectic clay (SPN)/polymer nanocomposites having various dispersed morphology of the clay layers. Both polystyrene (PS)/SPN and poly(methyl