نتایج جستجو برای: polymeric substrate

تعداد نتایج: 163438  

Journal: :Journal of Polymer Science Part A: Polymer Chemistry 2012

Journal: :Bioresource technology 2009
Jae-Jung Ko Yoshihisa Shimizu Kazuhiro Ikeda Seog-Ku Kim Chul-Hwi Park Saburo Matsui

This study is designed to investigate the biodegradation of high molecular weight (HMW) lignin under sulfate reducing conditions. With a continuously mesophilic operated reactor in the presence of co-substrates of cellulose, the changes in HMW lignin concentration and chemical structure were analyzed. The acid precipitable polymeric lignin (APPL) and lignin monomers, which are known as degradat...

2008
Maria Giovanna Buonomenna Enrico Drioli

In this work, we report a novel method for selective oxidation of benzyl alcohols to benzaldehydes. Neither solvent nor promoters are needed: a polymeric microporous membrane acts as a barrier to “keep in contact” the two phases: the organic phase containing the substrate, benzyl alcohols and the products, benzaldehydes and the aqueous phase with the catalyst and the oxidant, hydrogen peroxide....

Journal: :Optics express 2013
Hongwen Ren Su Xu Yifan Liu Shin-Tson Wu

An optically anisotropic microlens array film directly formed on a single substrate is demonstrated. UV curable diacrylate monomers are coated as a film on the substrate. Under the action of fringing field, not only the film surface is flattened by the generated dielectric force but also the monomers are reoriented to form a gradient refractive index (GRIN) distribution in the film. Via UV expo...

ژورنال: مجله طب نظامی 2019

Background and Aim: Electrospun nanofibers can be used to produce filter media in personal protective equipment for the military. The present study aimed to optimize the electrospinning process used to create polyurethane nanofiber substrates and compare the optimum substrate filtration performance with a typical commercial substrate used in the structure of N95 respirators. Methods: In this ex...

2015
Adam D. Celiz James G. W. Smith Asha K. Patel Andrew L. Hook Divya Rajamohan Vinoj T. George Luke Flatt Minal J. Patel Vidana C. Epa Taranjit Singh Robert Langer Daniel G. Anderson Nicholas D. Allen David C. Hay David A. Winkler David A. Barrett Martyn C. Davies Lorraine E. Young Chris Denning Morgan R. Alexander

A scalable and cost-effective synthetic polymer substrate that supports robust expansion and subsequent multilineage differentiation of human pluripotent stem cells (hPSCs) with defined commercial media is presented. This substrate can be applied to common cultureware and used off-the-shelf after long-term storage. Expansion and differentiation of hPSCs are performed entirely on the polymeric s...

2010
H. HOSSEINI A. MEHRABANI-ZEINABAD

This article presents results of a study on coating of a polymeric substrate catalyst on metallic surface. Stability of coating on metallic surfaces is a proper specification. Sol-gel technology was used to synthesize adhesion promoters of polysilane compounds that act as a mediator. The intermediate layer was coated by synthesized sulfonated polystyrene-divinylbenzene as a catalyst for product...

2016
Eliana Aparecida de Rezende Vinicius André Morais Rocha Melo Daniel Vinicius Mistura Adriana Christina Motta Avetik Kocharyan Ilona S. Skerjanc Eliana Aparecida de Rezende Duek

Among the current biomaterial applications, the use of biopolymers as cell scaffolds could aid the development of stem cell-based therapies aimed at replacing tissue loss due to injuries or diseases, such as during myocardial infarction. Embryonic stem cells (ESC) provide a great therapeutic potential for cardiac tissue. In this study, the interaction of mouse embryonic stem cells (mESC) with p...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2004
Kenichi Morigaki Kazuyuki Kiyosue Takahisa Taguchi

Micropatterned composite membranes of polymerized and fluid lipid bilayers were constructed on solid substrates. Lithographic photopolymerization of a diacetylene-containing phospholipid, 1,2-bis(10,12-tricosadiynoyl)-sn-glycero-3-phosphocholine (DiynePC), and subsequent removal of nonreacted monomers by a detergent solution (0.1 M sodium dodecyl sulfate (SDS)) yielded a patterned polymeric bil...

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