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Effect of Agricultural Beneficial Microbes on the Degradability of Polylactic Acid Film in the Farmland Environment. [PDF]

Polymers (Basel)
He Y, Dan Y, Jiang L, Huang Y, Zhang H, Qi Y.   +5 more
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Molecular Weight Distribution of Elastomers

Kobunshi Kagaku, 1961
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Molecular Weight Distributions

1989
Scientific study of the chemistry of small molecules is dominated by the law of constant composition and the axiom that all molecules of any pure compound have the same molecular weight; measurement of molecular weight (usually by mass spectrometry) is one of the standard starting points in structure determination in organic chemistry.
Andrea Munari, Piero Manaresi
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POLYMER MOLECULAR WEIGHT DISTRIBUTIONS

Journal of Macromolecular Science, Part C: Polymer Reviews, 1968
Abstract The problem of the calculation of the molecular weight distribution for a polymer is an important one for the chemical engineer, since any rational attempt to tailor the properties of a polymer must eventually depend on how the various polymers are distributed in the mixture.
Neal R. Amundson, Dan Luss
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Molecular Weight and Molecular Weight Distribution of Kraft Lignins

MRS Proceedings, 1990
ABSTRACTKraft lignins are the lignin degradation products from kraft pulping. They are complex, heterogeneous polymers with some polar character. The molecular weight of kraft lignins greatly affect the physical properties of black liquors, and are of primary importance in separation from black liquor and in evaluating potential uses.Several purified ...
Wolfgang Schmidl, Daojie Dong, Arthur L. Fricke   +2 more
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Molecular weights and molecular-weight distributions from ultracentrifugation of nonideal solutions

Biophysical Chemistry, 1976
Ultracentrifugation, membrane osmometry and capillary viscometry experiments have been performed on two dextran samples, which have molecular-weight distributions (MWDs) similar to those of dextrans used as blood plasma extenders. The manufacturer reported values of Mn and MW, determined by end group analysis and by light scattering, respectively.
P J, Wan, E T, Adams
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Molecular Weights and Molecular-Weight Distributions

1977
In synthesizing macromolecules in vitro and in vivo, monodisperse macromolecules (i.e., those in which every molecule has the same molecular weight) only occur under specific mechanistic conditions. The overwhelming majority of reactions proceed more or less randomly, and the resulting macromolecular substance shows a more or less broad molecular ...
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Molecular weights and molecular weight distribution of polymers by equilibrium ultracentrifugation. Part II. Molecular weight distribution

Journal of Polymer Science Part A-2: Polymer Physics, 1968
AbstractA method has been developed for determining the molecular weight distribution of a polymer sample from the sedimentation–diffusion equilibrium data for a solution under pseudo‐ideal conditions. From some theoretical examples it appears that the method works well and that the molecular weight distribution can be determined with a reasonable ...
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