Results 251 to 260 of about 774,640 (308)

ON THE MOLECULAR WEIGHT DISTRIBUTION OF CELLULOSE

Sen'i Gakkaishi, 1959
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Calcium chloride induces dose-dependent architectural, mechanical, and transcriptional remodeling in <i>Pseudomonas putida</i> biofilms: an exploratory multi-scale study. [PDF]

Front Microbiol
Yao Z, Wang Y, Yu H, Liu H, Guo K, Habimana O.   +5 more
europepmc   +1 more source

Cross-Linked Versus Linear Hyaluronic Acid for Cartilage Repair in Rat Post-Traumatic Osteoarthritis. [PDF]

J Orthop Res
Lee TC, Kao CM, Lin YW, Lin YS, Wang YH, Chen HF, Fu YC.   +6 more
europepmc   +1 more source

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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Effect of polymerization time on the molecular weight and molecular weight distribution of polypropylene [PDF]

Journal of Applied Polymer Science, 2006
AbstractThe influence of the polymerization time on the molecular weight (Mw, Mn, Mp, and Mz), molecular weight distribution (MWD) and relative MWD of polypropylene (PP) in the propylene polymerization with a Mg(OEt)2/DIBP/TiCl4/PTES/AlEt3 catalyst system in the slurry phase has been studied by using gel permeation chromatography (GPC), where Mg(OEt)2,
Abedi, S., Hosseinzadeh, M., Kazemzadeh, M.A., Daftaribesheli, Majid   +3 more
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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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Molecular weight distribution in random crosslinking of polymers: Modality of the molecular weight distribution

Macromolecular Theory and Simulations, 1994
AbstractThe molecular weight distribution (MWD), formed during random crosslinking of polymers whose initial molecular weight distribution is given by the Schulz‐Zimm distribution, is proposed. The obtained equation can be considered as a good approximation even for nonrandom crosslinking reactions such as free‐radical and living crosslinking ...
Hidetaka Tobita, Yoshiyasu Yamamoto, Kenji Ito   +2 more
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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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Distribution of molecular weights of pectin propionates

Journal of Colloid Science, 1948
Abstract A number of pectins have been esterified to form the corresponding propionates. These compounds are readily fractionated according to molecular weights by formation of a saturated solution in a suitable solvent system at a high temperature followed by reduction of the temperature and repetition of the operation several times.
H S, OWENS, J C, MIERS, W D, MACLAY
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