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Degree of Branching in Polymeric Chains
Russian Chemical Reviews, 1969The degree of branching of polymeric chains is one of the most important molecular parameters which determine the physicomechanical and technological properties of the polymers. The results of theoretical calculations of the influence of the degree of branching on the dimensions and nydrodynamic properties of the macromolecules are surveyed.
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Anion Template Effect and the Polymerization Degree – Diversity through Flexibility
European Journal of Inorganic Chemistry, 2005AbstractTwo 2D (M1 and M2) and one 1D (M3) metal‐organic frameworks (MOFs) have been prepared from pyridine functionalized tetradentate ligand tetrakis(nicotinoxymethyl)methane TNM with silver tetrafluoroborate, nickel chloride, and copper hexafluorophosphate.
de Bairos, Paulo E.N. +4 more
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Quantitative Fractionation of Grape Proanthocyanidins According to Their Degree of Polymerization
Journal of Agricultural and Food Chemistry, 1999A method was developed for the fractionation of grape (seed or skin) proanthocyanidins according to their degree of polymerization. After precipitation in chloroform/methanol (75:25, v/v), the grape proanthocyanidins were deposited onto an inert glass powder column and sequentially dissolved in several fractions by increasing proportions of methanol in
Labarbe, B. +4 more
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Determination of the degree of polymerization of leucoanthocyanidins
Phytochemistry, 1968Abstract From studying a series of hawthron condensed tannins, it has been found that the colorimetric method for determining the degree of polymerization of flavans based on the transformation of leucoanthocyanidins into anthocyanidins (V/LA coefficient) gives much less reliable results than molecular sieving and the colorimetric method based on the
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The calculation of degrees of polymerization of fractionated polymers
Die Makromolekulare Chemie, 1963AbstractEquations are derived which permit the calculation of number and weight average degrees of polymerization for the low and high molecular weight fractions obtained by dichotomy of the molecular weight distribution, at any chosen molecular size, of a polymer having the “most probable” type of distribution.
A. D. Jenkins, Joan Pumfrey
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Degree of polymerization in two-dimensional assemblies
Macromolecules, 1991Etude de l'influence des concentrations en amorceur et en monomere sur le degre de polymerisation des polymeres obtenus par polymerisation radicalaire d'une couche bimoleculaire d'acryloylphosphatidylcholine. Les resultats suggerent que la terminaison des polymerisations de couches bimoleculaires de lipides a lieu surtout par reaction avec des ...
Todd D. Sells, David F. O'Brien
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Inulin enriched wheat bread: interaction of polymerization degree and fermentation type
Journal of Food Measurement & Characterization, 2021F. Mohammadi +4 more
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Methods for Determining the Degree of Polymerization of Flavans
Nature, 1963Freudenberg1, Hergert2 and Hathway3 have each suggested several ways in which catechins and related compounds might polymerize to yield condensed tannins. Of these, oxidative condensation3, either with or without enzyme catalysis, appears to be the most likely way in which polymerization occurs in vivo; for example, in plum leaves during the course of ...
JUDITH L. GOLDSTEIN, T. SWAIN
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Effect of acid-chlorite delignification on cellulose degree of polymerization
Bioresource Technology, 2010Two types of pure cellulose, Avicel PH-101 and Whatman filter paper, were treated with an acid-chlorite delignification procedure in the presence of varying amounts of incorporated lignin, and the molecular weight distributions and degrees of polymerization (DP) of derivatized cellulose were determined by gel permeation chromatography (GPC).
Christopher A, Hubbell +1 more
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