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Updated: Jul 23, 2025

Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper
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奇托:在分子重量背景下在农业中的特性和应用

Ramón Román-Doval1, Sandra P Torres-Arellanes1, Aldo Y Tenorio-Barajas2

  • 1Tecnológico Nacional de México, Instituto Tecnológico del Valle de Etla, Oaxaca 68230, Mexico.

Polymers
|July 14, 2023
PubMed
概括

基从基中衍生而来的基,提供了有价值的农业应用,如增强植物生长和提供抗菌益处. 它在可持续农业中的有效性取决于分子量和乙化程度.

关键词:
基托桑是一种酸盐.抗微生物药物是一种抗菌药物.甲类的甲类动物.可持续农业 可持续农业

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Polymers: Molecular Weight Distribution01:10

Polymers: Molecular Weight Distribution

For any given polymer, the weight average molecular weight (Mw) is higher than, if not equal to, the number average molecular weight (Mn). The only situation in which the weight average molecular weight and the number average molecular weight are equal is when a polymer consists only of chains with equal molecular weight. However, this never happens in a synthetic polymer, since it is difficult to control the polymerization process up to a molecular level with accuracy to a hundred percent.
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Molecular Weight of Step-Growth Polymers

Step growth polymerization involves bi or multifunctional monomers. Bifunctional monomers react to form linear step growth polymers, whereas multifunctional monomers react to form non-linear or branched polymers.
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The extent of the...
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Polymers: Defining Molecular Weight

Unlike small molecules with definite molecular weights, polymers are a mixture of individual polymer chains of varying lengths, each with a unique molecular weight.  So, the molecular weight of a polymer is expressed as an average value based on the average size of the polymer chains. The two most common forms of averages used for polymers are the number average molecular weight and weight average molecular weight.
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