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Kato T.,University of Minnesota | Kato T.,Kuraray Co. | Kato T.,Kuraray America Inc. | Hillmyer M.A.,University of Minnesota
ACS Applied Materials and Interfaces | Year: 2013

Functionalized nanoporous polyethylene (PE) was prepared through controlled introduction of thermo-responsive poly[2-(2-methoxyethoxy)ethyl methacrylate] (PMe(OE)2MA), or poly{2-[2-(2-methoxyethoxy)ethoxy]ethyl methacrylate} (PMe(OE)3MA) onto the pore walls. The compatibility of polylactide (PLA) and PMe(OE)xMA (x = 2, 3) was investigated by blending the corresponding homopolymers. The blends showed only one glass transition when the molar masses of both components were relatively low, whereas two glass transitions were observed in case of higher molar mass samples. PMe(OE)xMA-b-PE-b-PMe(OE)xMA (x = 2, 3) block polymers were synthesized by a combination of ring-opening metathesis polymerization, atom transfer radical polymerization, and hydrogenation. Those block polymer blends formed a disordered bicontinuous structure consisting of a mixed PLA/PMe(OE)xMA domain and a semicrystalline PE domain. The PLA component was selectively removed from those blends by mild base treatment. The resulting nanoporous polyethylene showed an improved water uptake as a result of the hydrophilic PMe(OE)xMA on the pore walls. © 2012 American Chemical Society.

Kerschbaum A.,Kuraray America Inc.
Society of Plastics Engineers - 27th Annual Blow Molding Conference, ABC 2011 | Year: 2011

The presentation will cover: • Properties and applications of EVAL • Advances in the retort capabilities of EVAL • High impact EVAL The high barrier properties and versatility of EVAL will be presented with examples of new and existing applications, including advances in EVAL for retort applications and new resin grades for chemicals.

Kato T.,Kuraray America Inc.
Kobunshi | Year: 2015

I have been in the United States since 2010. For the first two years, I was a visiting scholar under Prof. Hillmyer at the University of Minnesota. I have worked for Kuraray America, Inc. as a technology scout since I came to Houston in 2012. While living in other cultures for four years is not enough to understand everything, the one thing I can say is that help from friends and colleagues is essential for surviving in a different culture. © 2015 The Society of Polymer Science, Japan.

Shitanoki Y.,Keio University | Shitanoki Y.,DuPont Company | Bennison S.J.,Kuraray America Inc. | Koike Y.,Keio University
Journal of Applied Mechanics, Transactions ASME | Year: 2014

Analytic models that describe the mechanical behavior of thin glass-polymer laminate structures have been investigated experimentally and via finite-element analysis (FEA). Standard laminate effective thickness models were shown to be applicable to a wide range of glass/interlayer thickness ratios and to a wide range of interlayer shear moduli, covering most currently existing glass laminates. In addition, an analytic comparison of the effective thickness model with the traditional composite beam model clarified the applicable limits of the former model in the range of the interlayer/glass thickness ratio and interlayer shear modulus. These modeling approaches enable a rational engineering design approach for structurally efficient, lightweight, and safe glazing laminates. Copyright © 2014 by ASME.

The inclusion of ethylene vinyl alcohol (EVOH) copolymer by coextrusion into geosynthetic liners would greatly reduce diffusive migration of volatile organic compounds (VOC's). The primary function of a geosynthetic liner system in a geoenvironmental application is containment of liquids and vapor that should not migrate into the surrounding environment. Existing monolithic geomembranes comprised of polypropylene, polyethylene and polyvinylchloride are excellent hydraulic and heavy metal barriers, but are not good barriers to volatile organic compounds that pose a threat to soil, water and air quality. In a composite with polyethylene or polypropylene, EVOH would dramatically improve the capability of geosynthetics to control the diffusion of gases, hydrocarbons and solvents in applications ranging from waste landfills, secondary containment, radon and vapor intrusion barriers and brown field remediation. A comparison of the properties and performance of model geosynthetics incorporating EVOH showed that EVOH improves VOC barrier properties by several orders of magnitude without substantially affecting key form and functionality of existing geomembranes. © 2011 ASCE.

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