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22 relations: Anhydroglucose unit, Carothers equation, Chain termination, Chain transfer, Chain-growth polymerization, Copolymer, Harry R. Allcock, International Union of Pure and Applied Chemistry, IUPAC books, Kinetic chain length, Macromolecule, Nylon 66, Oligomer, Osmotic pressure, Paul Flory, Polymer, Pure and Applied Chemistry, Rayleigh scattering, Repeat unit, Step-growth polymerization, Structural unit, Weighted arithmetic mean.
Anhydroglucose unit
The anhydroglucose unit (AGU) refers to a single sugar molecule in a polymer.
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Carothers equation
In step-growth polymerization, the Carothers equation (or Carothers' equation) gives the degree of polymerization, Xn, for a given fractional monomer conversion, p. There are several versions of this equation, proposed by Wallace Carothers who invented nylon in 1935.
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Chain termination
Chain termination is any chemical reaction that ceases the formation of reactive intermediates in a chain propagation step in the course of a polymerization, effectively bringing it to a halt.
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Chain transfer
Chain transfer is a polymerization reaction by which the activity of a growing polymer chain is transferred to another molecule.
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Chain-growth polymerization
Chain-growth polymerization or chain polymerization (IUPAC recommended term) is a polymerization mechanism in which monomer molecules add onto the active site of a growing polymer chain one at a time.
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Copolymer
When two or more different monomers unite together to polymerize, the product is called a copolymer and the process is called copolymerization.
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Harry R. Allcock
Harry R. Allcock (born April 8, 1932, Loughborough, England) is Evan Pugh Professor of chemistry at Pennsylvania State University.
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International Union of Pure and Applied Chemistry
The International Union of Pure and Applied Chemistry (IUPAC) is an international federation of National Adhering Organizations that represents chemists in individual countries.
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IUPAC books
The International Union of Pure and Applied Chemistry publishes many books, which contain its complete list of definitions.
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Kinetic chain length
In polymer chemistry the kinetic chain length of a polymer, ν, is the average number of units called monomers added to a growing chain during chain-growth polymerization.
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Macromolecule
A macromolecule is a very large molecule, such as protein, commonly created by the polymerization of smaller subunits (monomers).
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Nylon 66
Nylon 66 (nylon 6-6, nylon 6/6 or nylon 6,6) is a type of polyamide or nylon.
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Oligomer
An oligomer (oligo-, "a few" + -mer, "parts") is a molecular complex of chemicals that consists of a few monomer units, in contrast to a polymer, where the number of monomers is, in principle, infinite.
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Osmotic pressure
Osmotic pressure is the minimum pressure which needs to be applied to a solution to prevent the inward flow of its pure solvent across a semipermeable membrane.
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Paul Flory
Paul John Flory (June 19, 1910 – September 9, 1985) was an American chemist and Nobel laureate who was known for his work in the field of polymers, or macromolecules.
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Polymer
A polymer (Greek poly-, "many" + -mer, "part") is a large molecule, or macromolecule, composed of many repeated subunits.
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Pure and Applied Chemistry
Pure and Applied Chemistry (abbreviated Pure Appl. Chem.) is the official journal for the International Union of Pure and Applied Chemistry (IUPAC).
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Rayleigh scattering
Rayleigh scattering (pronounced), named after the British physicist Lord Rayleigh (John William Strutt), is the (dominantly) elastic scattering of light or other electromagnetic radiation by particles much smaller than the wavelength of the radiation.
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Repeat unit
A repeat unit or repeating unit is a part of a polymer whose repetition would produce the complete polymer chain (except for the end-groups) by linking the repeat units together successively along the chain, like the beads of a necklace.
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Step-growth polymerization
Step-growth polymerization refers to a type of polymerization mechanism in which bi-functional or multifunctional monomers react to form first dimers, then trimers, longer oligomers and eventually long chain polymers.
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Structural unit
In polymer chemistry, a structural unit is a building block of a polymer chain.
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Weighted arithmetic mean
The weighted arithmetic mean is similar to an ordinary arithmetic mean (the most common type of average), except that instead of each of the data points contributing equally to the final average, some data points contribute more than others.
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Average degree of polymerisation, Average degree of polymerization, Degree of polymerisation.
References
[1] https://en.wikipedia.org/wiki/Degree_of_polymerization
