全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:Frédéric Pignon , Joana L. M. Silveira ...
来源:[J].Polymers(IF 1.687), 2015, Vol.7 (5), pp.777-803DOAJ
摘要:This review covers the preparation, characterization, properties, and applications of methylcelluloses (MC). In particular, the influence of different chemical modifications of cellulose (under both heterogeneous and homogeneous conditions) is discussed in relation to the physica...
作者:Frédéric Pignon , Félix Armando Soltero Martínez
来源:[J].Polymers(IF 1.687), 2016, Vol.8 (8)DOAJ
摘要:Molecular weight, stiffness, temperature, and polymer and ionic concentrations are known to widely influence the viscosity of polymer solutions. Additionally, polymer molecular weight—which is related to its dimensions in solution—is one of its most important characteristics...
作者:Frédéric Pignon , Joana L. M. Silveira ...
来源:[J].Polymers(IF 1.687), 2014, Vol.6 (12), pp.2961-2973DOAJ
摘要:The interfacial interactions of four methylcelluloses having the same average degree of substitution and distribution of methyl groups, but different molar masses, are studied at ambient temperature and at very low polymer concentrations. Firstly, the surface tension σ at th...
作者:Frédéric Pignon , Marianne Impéror-Clerc
来源:[J].Ultrasonics - Sonochemistry(IF 3.516), 2018, Vol.41, pp.327-336Elsevier
摘要:Abstract(#br)In this paper, the disintegration of starch (waxy and standard starch) granules into nanosized particles under the sole effect of high power ultrasonication treatment in water/isopropanol is investigated, by using wide methods of analysis. The present work aims at a ...
作者:Frédéric Pignon , Bruno Jean
来源:[J].Cellulose(IF 3.476), 2019, Vol.26 (13-14), pp.7619-7634Springer
摘要:Abstract(#br)The effect of sonication on a highly concentrated commercial suspension of cellulose nanocrystals (CNCs) and the resulting rheological properties have been investigated. Rheology and structural analysis techniques (atomic force microscopy, small-angle X-ray scat...
作者:Frédéric Pignon , Joana L. M. Silveira ...
来源:[J].International Journal of Polymer Analysis and Characterization(IF 1.233), 2015, Vol.20 (2), pp.110-118Taylor & Francis
摘要:In this study, thermogelation of methylcelluloses is investigated in relation to the molar mass and concentration in aqueous medium. A large hysteresis between heating and cooling ramps was observed whatever the conditions. The heating process in particular was studied to an...
作者:Frédéric Pignon , Nicolas Gondrexon ...
来源:[J].Journal of Membrane Science(IF 4.093), 2014, Vol.453, pp.624-635Elsevier
摘要:Abstract(#br)Effects of ultrasound (US) on the structural organization within concentrated particle layers during cross-flow ultrafiltration of Laponite dispersions have been characterized for the first time by in-situ time-resolved small-angle X-ray scattering (SAXS). A nov...
作者:Frédéric Pignon , Ana Maria Botelho Do Rego
来源:[J].Composites Part B(IF 2.143), 2016, Vol.85, pp.188-195Elsevier
摘要:Abstract(#br)The hydrophilic nature of nanofibrillated cellulose (NFC) impedes its easy incorporation in hydrophobic thermoplastic matrices. This introduces difficulties in composites compounding and achieving the sufficient NFC dispersion within the matrix. The use of matrix in ...
作者:Oleksandr Nechyporchuk , Mohamed Naceur Belgacem , Frédéric Pignon
来源:[J].Carbohydrate Polymers(IF 3.479), 2014, Vol.112, pp.432-439Elsevier
摘要:Abstract(#br)The rheological properties of enzymatically hydrolyzed and TEMPO-oxidized microfibrillated/nanofibrillated cellulose (MFC/NFC) aqueous suspensions were investigated in oscillation and steady-flow modes and were compared with the morphology of the studied materials. T...
作者:Frédéric Pignon , Albert Magnin ...
来源:[J].Rheologica Acta(IF 1.626), 2009, Vol.48 (5), pp.563-578Springer
摘要:Abstract(#br)The structure and orientation dynamics of sepiolite clay fibers about 1,000 nm long and 10 nm thick, suspended in an aqueous poly(ehtylene oxide) matrix of 10 5 g/mol molecular mass, have been studied under control extensional and shear flow. A new extensional f...

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