The University of Osaka · Chemical Engineering
Professor Tadashi Inoue's research lab specializes in the molecular dynamics and viscoelastic behavior of amorphous polymers, particularly around the glass transition temperature (Tg). The lab employs advanced techniques such as dynamic birefringence and stress-optical measurements to investigate structure-property relationships, focusing on segmental motions, Rouse dynamics, and the influence of chemical structure on mechanical response. Their work also extends into materials chemistry, including stereoselective organic synthesis and nuclear waste partitioning via pyrometallurgical processes.
Figures are computed from collected data and may differ slightly.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBirefringence of amorphous polymers. 1. Dynamic measurement on polystyreneTadashi Inoue, Hirotaka Okamoto, and Kunihiro OsakiCite this: Macromolecules 1991, 24, 20, 5670–5675Publication Date (Print):September 1, 1991Publication History Published online1 May 2002Published inissue 1 September 1991https://pubs.acs.org/doi/10.1021/ma00020a029https://doi.org/10.1021/ma00020a029research-articleACS PublicationsRequest reuse permissionsArticle Views1553Altmetr
The author considers two basic problems with repetitive control: the tight stability condition and the poor noise characteristics. He presents three techniques for a practical repetitive controller design: stabilizing compensation by an inverse phase system, band limitation of the control, and smoothing of the control signal over periods of repetitive operation.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
The boron-mediated aldol reaction of carboxylic esters is described in detail. Contrary to the general belief that carboxylic esters are inert under the condition of the boron enolate formation, propionate esters are enolized with certain combinations of a boron triflate and an amine. More importantly, the stereochemical course of the aldol reaction can be controlled by the judicious selection of the enolization reagents. Treatment of propionate esters with c-Hex2BOTf and triethylamine produces
Young's modulus of amorphous polymers around the glass-to-rubber transition zone can be separated into two component functions (R and G) through a modified stress-optical rule (Inoue et al. Macromolecules 1991, 24, 5670) with the simultaneous measurements of the strain-induced birefringence and the stress. In the present study, the two component functions are compared among more than ten polymers, and their relation to chemical structure is investigated. The Rouse segment size is estimated from
High-level radioactive wastes from the Purex process contain long-lived nuclides, which mainly consist of transuranic elements (TRUs). A partitioning and transmutation method that consists of pyrometallurgical partitioning of TRUs from Purex waste from light water reactor fuel and transmutation using a metal-fueled fast breeder reactor (FBR) is evaluated. The results indicate that the concept is feasible and has many advantages over conventional concepts based on wet processes and that transmuta
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Motions and Viscoelasticity of Amorphous Polymers near TgTadashi Inoue, Marcus T. Cicerone, and M. D. EdigerCite this: Macromolecules 1995, 28, 9, 3425–3433Publication Date (Print):April 1, 1995Publication History Published online1 May 2002Published inissue 1 April 1995https://pubs.acs.org/doi/10.1021/ma00113a049https://doi.org/10.1021/ma00113a049research-articleACS PublicationsRequest reuse permissionsArticle Views738Altmetric-Citations90LEA
Latent TGF-β-binding protein-2 (LTBP-2) is an extracellular matrix protein associated with microfibrils. Homozygous mutations in LTBP2 have been found in humans with genetic eye diseases such as congenital glaucoma and microspherophakia, indicating a critical role of the protein in eye development, although the function of LTBP-2 in vivo has not been well understood. In this study, we explore the in vivo function of LTBP-2 by generating Ltbp2(-/-) mice. Ltbp2(-/-) mice survived to adulthood but
The iodocarbocyclization reaction of 4-alkenylmalonate derivatives proceeded with excellent enantioselectivity (>/=95% ee) in the presence of 10-40 mol % of Ti(TADDOLate)(2). The Ti(TADDOLate)(2)-mediated catalytic asymmetric reaction was extended to the enantiotopic group selective reaction of bisalkenylated malonates, giving rise to trisubstituted cyclopentanoid compounds with both high diastereoselectivity (86-94% de) and excellent enantioselectivity (>/=95% ee). An efficient synthesis of (+)
The nonlinear rheology of aqueous solutions of cetyltrimethylammonium bromide (CTAB) and sodium salicylate (NaSal) was investigated. The concentration of CTAB was fixed at 0.1 mol L(-1), and the concentration of NaSal was varied from 0.07 to 0.4 mol L(-1). For all test solutions, dynamic moduli were described with the Maxwell model having a single relaxation time, tau. Time evolutions of the shear stress, sigma, and the first normal stress difference, N(1), after inception of the steady shear fl
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