Results 91 to 100 of about 426,028 (222)
Cellulose swelling and dissolution as a tool to study the fiber structure
, 2006 International audienceThe swelling and dissolution mechanisms of cotton or wood fibers cellulose fibers in aqueous (as N - methylmorpholine N-oxide and water mixtures, or soda solutions) or in ionic liquids are studied.
Cuissinat, Céline, Navard, Patrick
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Water-accelerated organic transformations [PDF]
, 2001 Rather than quenching all reactive intermediates and arresting the reaction, the addition of catalytic or stoichiometric (1-10 equiv.) quantities of H2O to organic and organometallic processes can lead to surprisingly beneficial effects on reaction rate,
Ribe, S, Wipf, P
core +2 more sources
Cellulose dissolution in an alkali based solvent: influence of additives and pretreatments [PDF]
, 2013 The distinction between thermodynamic and kinetics in cellulose dissolution is seldom considered in the literature. Therefore, herein an attempt to discuss this topic and illustrate our hypotheses on the basis of simple experiments was made.
Germgard, Ulf +5 more
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Industrial Crops and ProductsAlthough the fabrication of regenerated cellulose (RC) films from highly purified cellulose has been extensively studied, few efforts have explored their direct production from chemically pretreated biomass with varying lignin and xylan contents.
Juping Yuan +5 more
doaj +1 more source
Generation of Molecular Complexity from Cyclooctatetraene: Preparation of Optically Active Protected Aminocycloheptitols and Bicyclo[4.4.1]undecatriene [PDF]
, 1999 The racemic (6-cyclo-heptadienyl)Fe(CO)3+ cation ((±)-7), prepared from cyclooctatetraene, was treated with a variety of carbon and heteroatom nucleophiles.
El-Mansy, Mohamed F. +3 more
core +1 more source
Dissolution mechanisms of wood cellulose fibres in NaOH-water
, 2010 The authors are grateful to the publisher, Springer, for letting the manuscript being archived in this Open Access repository. The final publication is available at http://www.springerlink.comInternational audienceFour wood pulps and a microcrystalline ...
Le Moigne, Nicolas, Navard, Patrick
core +3 more sources
抗結核作用を有するベルチヘミプテリドA の合成研究：ビス-α-スルフェニルジケトピペラジン誘導体の合成 [PDF]
, 2013 Bis-α-sulfenylated diketopiperazine derivative corresponding to the monomer of vertihemiptellide A, a potential antituberculosis agent from the insect pathogenic fungus Verticillium hemipterigenum BCC 1499, was synthesized.
加藤 正, 成田 紘一, 熱海 秀
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Synthesis of several bisabolane sesquiterpenoids from xanthorrhizol isolated from C. Xanthorrhiza [PDF]
, 2005 Xanthorrhizol was isolated from the essential oil of fresh rhizomes of C. xanthorrhiza in 20.2% yield by fractionation using vacuum liquid chromatography. Several bisabolane-type sesquiterpenoids have been synthesised from this xanthorrhizol.
Ngai, Mun Hong
core
Method of solution preparation of polyolefin class polymers for electrospinning processing included [PDF]
, 2011 A process to make a polyolefin fiber which has the following steps: mixing at least one polyolefin into a solution at room temperature or a slightly elevated temperature to form a polymer solution and electrospinning at room temperature said polymer ...
Givens, Steven R. +2 more
core +1 more source