Results 21 to 30 of about 326,825 (346)

Characteristics of transitional multicomponent gaseous and drop-laden mixing layers from direct numerical simulation: Composition effects [PDF]

open access: yes, 2007
Transitional states are obtained by exercising a model of multicomponent-liquid (MC-liquid) drop evaporation in a three-dimensional mixing layer at larger Reynolds numbers, Re, than in a previous study.
Bellan, J., Selle, L. C.
core   +1 more source

A synthetic approach to a fullerene-rich dendron and its linear polymer via ring-opening metathesis polymerization [PDF]

open access: yes, 2014
Through the esterification of an acyl chloride functionalized fullerene precursor with dendritic alcohol, a fullerene-rich dendron containing a norbornene unit at the focal point is prepared for ring-opening metathesis polymerization to obtain its linear
Kim, Jin Young   +5 more
core   +1 more source

Terpene polyacrylate TPA5 shows favorable molecular hydrodynamic properties as a potential bioinspired archaeological wood consolidant

open access: yesScientific Reports, 2021
There is currently a pressing need for the development of novel bioinspired consolidants for waterlogged, archaeological wood. Bioinspired materials possess many advantages, such as biocompatibility and sustainability, which makes them ideal to use in ...
Michelle Cutajar   +7 more
doaj   +1 more source

Overview of Methods for the Direct Molar Mass Determination of Cellulose

open access: yesMolecules, 2015
The purpose of this article is to provide the reader with an overview of the methods used to determine the molecular weights of cellulose. Methods that employ direct dissolution of the cellulose polymer are described; hence methods for investigating the ...
Josua Timotheus Oberlerchner   +2 more
doaj   +1 more source

Impact of Hemorrhagic Stroke on Molar Bite Force: A Prospective Study

open access: yesPrague Medical Report, 2022
Stroke is a neurological deficit of cerebrovascular origin that promotes physical impairments of adult individuals. The present study is aimed to demonstrate whether hemorrhagic stroke affects the maximum molar bite force.
Gabriel Pádua da Silva   +9 more
doaj   +1 more source

Well-defined side-chain liquid-crystalline polysiloxanes [PDF]

open access: yes, 1996
A route to well-defined side-chain liquid-crystalline polysiloxanes (ratio of weight-to number-average molar masses Mw/Mn < 1.2 is reported. Anionic ring-opening polymerization of pentamethylvinylcyclotrisiloxane yielded a poly(dimethylsiloxane-co ...
Hempenius, Mark A.   +2 more
core   +2 more sources

Control of Molar Mass Distribution by Polymerization in the Analytical Ultracentrifuge [PDF]

open access: yesAngewandte Chemie International Edition, 2018
AbstractMolar mass distributions are of high interest in macromolecular chemistry because they directly determine the physical and chemical properties of polymers. A principal approach to obtain and control the shape of broad molar mass distributions is adjusting the initiator concentration in free radical polymerizations.
Andreas Spinnrock, Helmut Cölfen
openaire   +3 more sources

Chemometric Study on Alkaline Pre-treatments of Wood Chips Prior to Pulping

open access: yesBioResources, 2016
Alkaline pre-treatments were performed for the production of organics-containing effluents from silver/white birch (Betula pendula/pubescens) and Scots pine (Pinus sylvestris) chips prior to chemical pulping.
Joni Tapani Lehto   +6 more
doaj   +1 more source

Polyethylene loss of ductility during oxidation: Effect of initial molar mass distribution [PDF]

open access: greenPolymer Degradation and Stability, 2018
This paper reports a study of thermal oxidation induced embrittlement in several polyethylene grades differing mainly by the broadness of the molar mass distribution (ranging for lower than 3 to more than 30). Thermal oxidation was monitored at macromolecular scale (Gel Permeation Chromatography, Differential Scanning Calorimetry) and macroscopic scale
Armando F. Reano   +3 more
openalex   +3 more sources

Molecular and macromolecular structure changes in polyamide 11 during thermal oxidation [PDF]

open access: yes, 2014
The present article reports a study of thermal oxidation of unstabilized polyamide 11 films at several temperatures (90–165 °C) under atmospheric pressure and under various oxygen pressures (up to 1.6 MPa) at 110 °C.
FAYOLLE, Bruno   +5 more
core   +7 more sources

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