Results 1 to 10 of about 326,825 (346)

The significance of sample preparation of historical and contemporary poly(vinyl chloride) objects to investigate the distribution and changes of molar mass by SEC-MALS-dRI [PDF]

Heritage Science, 2023
The distribution of molar mass of historical and contemporary poly(vinyl chloride) objects was determined using size exclusion chromatography with multi-angle light scattering detection. The weight average molar mass was determined for a collection of 57
Tjaša Rijavec, Dominika Pawcenis, Krzysztof Kruczała, Matija Strlič, Irena Kralj Cigić   +4 more
doaj   +2 more sources

Influence of the Molar Mass Distribution on the Elongational Behaviour of Polymer Solutions in Capillary Breakup

Applied Rheology, 2005
Commercially available, blended methylhydroxyethyl celluloses with similar weight-average molar masses but varying molar mass distributions were characterized by different techniques like steady shear flow and uniaxial elongation in capillary breakup ...
Plog J. P., Kulicke W.-M., Clasen C.
doaj   +3 more sources

Heterogeneous molar mass distribution of chromophores in milled wood lignins isolated from four lignocellulosic species [PDF]

Journal of Wood Science
Lignin, a major component of lignocellulosic cell walls, is an aromatic polymer known to exhibit a high molar absorption coefficient and fluorescence properties in various solvents and polymeric environments.
Masatsugu Takada, Shota Horinouchi, Yuki Yamamoto, Kei Fujimaki, Shinya Kajita   +4 more
doaj   +2 more sources

Dispersity-controlled ring-opening polymerization of epoxide [PDF]

Nature Communications
Dispersity or molar mass distribution (Ð M) profoundly influences polymer properties, but its control remains a challenge, especially for ring-opening polymerization (ROP).
Yubo Zhou, Junpeng Zhao, Guangzhao Zhang
doaj   +2 more sources

A New Route for Evaluating Short Chain Branching Distribution of High Density Polyethylene by Measuring Crystallizability of Molar Mass Fractions

Medžiagotyra, 2011
A bimodal high density polyethylene (HDPE) has been successfully fractionated by analytical size exclusion chromatography into molar mass fractions with Mw's ranging from 3.6 kg/mol to 8 000 kg/mol, and subsequently deposited on germanium ...
Andres KRUMME, Monika BASIURA, Thijs PIJPERS, Geert VANDEN POEL, Lars Christian HEINZ, Robert BRÜLL, Vincent B. F. MATHOT   +6 more
doaj   +3 more sources

Enhancing the Self-Assembly of Step-Growth Polymers by Narrowing Their Molar Mass Distribution: A Dynamic Bond-Mediated Approach. [PDF]

Angew Chem Int Ed Engl
Polo Fonseca L, Hamzehlou S, Garagarza O, Mantione D, Lamas A, de Pariza XL, Elizalde F, Campins MX, Agirre A, Perli G, Sardon H.   +10 more
europepmc   +3 more sources

Degradation of PET – Quantitative estimation of changes in molar mass using mechanical and thermal characterization methods

Polymer Testing, 2023
Polyethylene terephthalate (PET) films are used when mechanical strength, thermal and chemical stability, and barrier properties to atmospheric gases are required in combination with good processability.
Gernot Oreski, Bettina Ottersböck, Chiara Barretta, Petra Christöfl, Simone Radl, Gerald Pinter   +5 more
doaj   +1 more source

Influence of humic substances on the landfill leachate biodegradability with a focus on temporal seasonality

Water Science and Technology, 2021
The high resilience to biological treatments from the landfill leachate is generally associated with the presence of humic substances (HS). The brown color characteristic of this effluent is also related to these substances.
Wagner Guadagnin Moravia, Victor Rezende Moreira, Yuri Abner Rocha Lebron, Liséte Celina Lange, Míriam Cristina Santos Amaral   +4 more
doaj   +1 more source

Physicochemical characterization and study of molar mass of industrial gelatins by AsFlFFF-UV/MALS and chemometric approach. [PDF]

PLoS ONE, 2018
Industrial gelatins have different physicochemical properties that mainly depend of the raw materials origin and the extraction conditions. These properties are closely related to the molar mass distribution of these gelatins.
Simon Duthen, Chloé Rochat, Didier Kleiber, Frederic Violleau, Jean Daydé, Christine Raynaud, Cecile Levasseur-Garcia   +6 more
doaj   +1 more source

Degradation of regenerated cellulose filaments by hydrogen chloride under aqueous and non-aqueous conditions

Carbohydrate Polymer Technologies and Applications, 2022
Cellulose (rayon) filaments were exposed to various concentrations of hydrochloric acid under aqueous and non-aqueous conditions in order to study differences in degradation.
Bernhard Ungerer, Irina Sulaeva, Sabine Bodner, Antje Potthast, Jozef Keckes, Ulrich Müller, Stefan Veigel   +6 more
doaj   +1 more source