نتایج جستجو برای: فرآیند peo

تعداد نتایج: 33892  

Journal: :Journal of colloid and interface science 2005
Paul-Cheng Yuang Yun-Hwei Shen

This study investigates the feasibility of using ethylene oxide (EO) chain adsorption to determine the surface area of smectite in water. Experimental results indicate that high-molecular-weight poly(ethylene oxide) (PEO) should be used to provide reasonable estimations for monolayer capacity of PEO on smectite. The surface areas of smectites in water are calculated from the monolayer capacity ...

2014
J. G. Fernandes D. M. Correia G. Botelho J. Padrão F. Dourado C. Ribeiro S. Lanceros-Méndez V. Sencadas

Fiber meshes of poly(hydroxybutyrate) (PHB) and poly(hydroxybutyrate)/ poly(ethylene oxide) (PHB/PEO) with different concentrations of chlorhexidine (CHX) were prepared by electrospinning, for assessment as a polymer based drug delivery system. The electrospun fibers were characterized at morphological, molecular and mechanical levels. The bactericidal potential of PHB and PHB/PEO electrospun f...

2006
Byoung-Suhk Kim Patrick T. Mather

Amphiphilic telechelics incorporating polyhedral oligosilsesquioxane (POSS) end-caps were synthesized and studied as a novel building block for the construction of inorganic-organic hybrid materials. Their micron-scale morphologies were investigated using hot-stage polarizing optical microscopy (POM), revealing a dramatic influence of POSS macromer incorporation. The molecular-scale crystalline...

Journal: :The Journal of chemical physics 2013
I Garcia-Yoldi F Álvarez J Colmenero

The aim of this work is to investigate polymer[middle dot][middle dot][middle dot]substrate interactions for a polymer nanocomposite material: poly(ethylene oxide) (PEO) confined in graphite oxide (GO). Six discrete and simplified models (one for PEO and five for GO) have been chosen in order to reproduce the most likely PEO···GO interactions. Twelve potential interaction energy curves have bee...

2018
Anthony M. Maher Chloé E. Ward Steven Glassman Ivan V. Litvinov

Papuloerythroderma of Ofuji (PEO) is an erythroderma-like eruption with flat-topped papules that spare the skin folds (a "deck-chair sign" finding). Many infections, medications, and systemic diseases have been associated with PEO, including cutaneous T-cell lymphomas (CTCL). The relationship between the clinical presentation of PEO and CTCL remains poorly elucidated. Clinical, laboratory, and ...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2008
Myunghwan Byun Suck Won Hong Lei Zhu Zhiqun Lin

A drop of semicrystalline polymer, poly(ethylene oxide) (PEO), solution was placed in a restricted geometry consisting of a sphere on a flat substrate (i.e., sphere-on-flat geometry). Upon solvent evaporation from the sphere-on-flat geometry, microscopic concentric rings of PEO with appropriate high molecular weight were produced via controlled, repetitive pinning ("stick") and depinning ("slip...

Journal: :iranian journal of pharmaceutical research 0
shailesh prajapati department of pharmaceutics, shri sarvajanik pharmacy college, mehsana, gujarat, india. laxmanbhai. patel department of pharmaceutics, c. u. shah college institute of pharmacy and research wadhwan, gujarat, india. chhaganbhai patel department of pharmaceutics, c. u. shah college institute of pharmacy and research wadhwan, gujarat, india.

the purpose of this research was to prepare a floating matrix tablet containing domperidone as a model drug. polyethylene oxide (peo) and hydroxypropyl methylcellulose (hpmc) were evaluated for matrix-forming properties. a simplex lattice design was applied to systemically optimize the drug release profile. the amounts of peo wsr 303, hpmc k15m and sodium bicarbonate were selected as independen...

Journal: :Macromolecular rapid communications 2011
Xiaoshuang Feng Elliot L Chaikof Christelle Absalon Carlos Drummond Daniel Taton Yves Gnanou

Degradable dendrimer-like PEOs were designed using an original ABC-type branching agent featuring a cleavable ketal group, following an iterative divergent approach based on the anionic ring opening polymerization (AROP) of ethylene oxide and arborization of PEO chain ends. A seventh generation dendrimer-like PEO carrying 192 peripheral hydroxyls and exhibiting a molar mass of 446 kg · mol(-1) ...

Journal: :Molecular Simulation 2023

Understanding the transport mechanism of Li+ in solid polymer electrolytes is beneficial for improving safety and energy density lithium-ion batteries. In this work, we investigate effects chain length poly (ethylene oxide) (PEO) anions (TfO-, TFSI-, PFSI-) on ion properties PEO-lithium salt systems using all-atom molecular dynamics simulations. We found that PEO monomers are co-diffusion, rega...

Recently, PEO process of tantalum has been developed as a method of producing corrosion-resistant, hard, wear-resistant, and biocompatible as well as having good adhesion coatings. In this review, we present the results of PEO process of tantalum in three main electrolytes. This review tries to measure the effect of electrolyte composition and voltage that were used within PEO procedure on the ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید