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Modes of Absorption of Macromolecular Substances
1995When we speak about absorption of macromolecular substances we must take into consideration the barriers of the gastrointestinal tract which hinder their uptake and transportation into the lymphatics and the blood. These barriers can be differentiated into morphological and functional barriers.
G. Gebert
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On the mechanism of collapse of monolayers of macromolecular substances. I. Polymethylmethacrylate
Journal of Colloid and Interface Science, 1978Gabriella Gabrielli
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Modification of Macromolecular Substances
2012The term “modification of macromolecular substances” is used for chemical and physical processes that are carried out after the actual synthesis, i.e., on the finished macromolecule. Chemical modifications are, for example, the conversion of ester side groups to hydroxy groups, chemical degradation and crosslinking reactions. Physical modifications are
Dietrich Braun +4 more
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MACROMOLECULAR STRUCTURES OF HUMIC SUBSTANCES
Soil Science, 1980ABSTRACTWe investigated humic substances by surface pressure and viscosity measurements at different pHs and neutral salt concentrations to elucidate their macromolecular configurations. We observed that such configurations were not unique; they varied with the changes in the medium.
Kunal Ghosh
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Pharmacological Research Communications, 1975
Summary Some principles at the basis of the potential interest of macromolecular drugs are defined. The main lines of a research on purposely tailored synthetic high polymers acting as precursors of non-macromolecular active substances are given. The chemical aspects of proper design of these polymers are discussed in detail.
Paolo Ferruti
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Summary Some principles at the basis of the potential interest of macromolecular drugs are defined. The main lines of a research on purposely tailored synthetic high polymers acting as precursors of non-macromolecular active substances are given. The chemical aspects of proper design of these polymers are discussed in detail.
Paolo Ferruti
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SORPTION AND CHROMATOGRAPHY OF MACROMOLECULAR SUBSTANCES
Russian Chemical Reviews, 1961 CONTENTS I. Introduction 612 II. Elution chromatography 613 III. Frontal chromatography 614 IV. New chromatographic methods 615 V. Polyelectrolytes 616 VI.
G V Samsonov
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Chapter 49 Macromolecular substances and plastics
1975Publisher Summary This chapter discusses macromolecular substances and plastics. In industry, gel permeation chromatography (GPC) serves as a method for characterizing and analyzing new polymeric products and for controlling the quality of standard products (Harmon).
M. Kubín, J. Čoupek
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The Crystalline State of Macromolecular Substances
Angewandte Chemie International Edition in English, 1974AbstractUnlike low molecular weight substances, high polymers do not crystallize completely. However long the crystallization process is continued, they still consist of a mixture of crystalline and non crystalline regions. In the undrawn material, these regions form larger units which are known as spherulites.
H. G. Zachmann
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On the mechanism of collapse of monolayers of macromolecular substances II. Cellulose acetate
Journal of Colloid and Interface Science, 1980Abstract The phenomenon of collapse of monolayers of cellulose acetate, describable according to the Prout-Tompkins law, that is as a phenomenon of nucleation and growth with interference during growth, was studied. Ellipsometric measurements and measurements made by optical and electronic microscopy confirm the above mechanism.
Piero Baglioni +2 more
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Affinity Chromatography of Macromolecular Substances on Adsorbents Bearing Carbohydrate Ligands
Advances in Carbohydrate Chemistry and Biochemistry, 1981Publisher Summary This chapter provides information on the methods for preparing affinity adsorbents having carbohydrate ligands and illustrates the use of these adsorbents for the purification of representative, macromolecular substances. Affinity chromatography is possible because of the stereospecific interactions that can occur between the ...
J. Pazur
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