Results 211 to 220 of about 104,176 (263)
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Degree of polymerization of a vesicle membrane
Macromolecules, 1984the chains. This is not the reason for the low anisotropy of poly(4BCMU) single crystal, since we adopted evaporated-gold electrodes cov- ering the edges of the specimen completely. Then, the difference in the anisotropy between poly(4BCMU) and PDA-TS single crystals might have resulted from the difference in their crystal forms.
Durgadas Bolikal, Steven L. Regen
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Degree of Polymerization of Deoxyribonucleic Acid
Nature, 1953THE improvement of methods for isolating cell nuclei requires the establishment of suitable criteria of nuclear intactness which may be used to evaluate changes in technique1. The following experiments were performed in the course of an effort to devise methods for following changes in the degree of polymerization of deoxyribonucleic acid during ...
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Two-dimensional polymerization of lipid bilayers: degree of polymerization of acryloyl lipids
Macromolecules, 1994The reactivity of polymerizable amphiphiles in the two-dimensional matrix of supramolecular assemblies, such as lipid bilayers, is dependent on the monomer structure, the mode of initiation, the monomer to initiator ratio, and the lateral diffusion of the monomer within the assembly.
Todd D. Sells, David F. O'Brien
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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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Journal of Polymer Science Part C: Polymer Symposia, 1967
AbstractThe lowering of degree of polymerization in cationic copolymerization was investigated for the isobutene–styrene copolymerizations in particular. In this system the simultaneous presence of a reactive isobutene cation and reactive styrene monomer acting as a chain transfer agent, a situation which cannot be visualized in homopolymerization, was
Seizo Okamura +4 more
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AbstractThe lowering of degree of polymerization in cationic copolymerization was investigated for the isobutene–styrene copolymerizations in particular. In this system the simultaneous presence of a reactive isobutene cation and reactive styrene monomer acting as a chain transfer agent, a situation which cannot be visualized in homopolymerization, was
Seizo Okamura +4 more
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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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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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AERATION EFFECT ON BACTERIAL NANOCELLULOSE DEGREE OF POLYMERIZATION
BIOTECHNOLOGY: STATE OF THE ART AND PERSPECTIVES, 2020The forced aeration at flow rates of 3.3, 6.3, 9.2,12.3 and 16.7 L/min was found to have an ambiguous effect on the degree of polymerization of bacterial nanocellulose.
N. Shavyrkina, V. Budaeva
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Retrogradation behavior of debranched starch with different degrees of polymerization
Food Chemistry, 2019Retrogradation is inevitable during the storage of starchy products. Retrogradation behavior of starches (e.g., amylopectin and amylose) has been widely investigated. We firstly studied the retrogradation behavior of short linear glucan debranched from amylopectin with different degrees of polymerization (DP).
Ranran Chang +9 more
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Degree of polymerization of resin composites by different light sources
Journal of Oral Rehabilitation, 2002summary  The purpose of this study was to determine the effectiveness of polymerization in the newly introduced blue light emitting diode (LED) (Experimental, SNU, Korea), and plasma arc curing (PAC) (Apollo 95E, Elite, DMD, USA) compared with conventional halogen lamp (Spectrum 800, Dentsply, USA).
T-H, Yoon, Y-K, Lee, B-S, Lim, C-W, Kim
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