What Polymer Do The Monomers Makeup

Molecule which reacts with other monomers to form a polymer

In chemical science, a monomer ( Monday-ə-mər; mono-, "one" + -mer, "part") is a molecule that can react together with other monomer molecules to form a larger polymer chain or 3-dimensional network in a process called polymerization.^{[one] [two] [3]}

Monomer molecule: A molecule which can undergo polymerization, thereby contributing constitutional units to the essential structure of a macromolecule.^[4]

Classification [edit]

Monomers can be classified in many ways. They can be subdivided into two broad classes, depending on the kind of the polymer that they form. Monomers that participate in condensation polymerization have a different stoichiometry than monomers that participate in improver polymerization:^[five]

This nylon is formed by condensation polymerization of 2 monomers, yielding water.

Other classifications include:

• natural vs constructed monomers, eastward.g. glycine vs caprolactam, respectively
• polar vs nonpolar monomers, due east.grand. vinyl acetate vs ethylene, respectively
• circadian vs linear, eastward.grand. ethylene oxide vs ethylene glycol, respectively

The polymerization of one kind of monomer gives a homopolymer. Many polymers are copolymers, meaning that they are derived from ii different monomers. In the case of condensation polymerizations, the ratio of comonomers is ordinarily 1:i. For instance, the formation of many nylons requires equal amounts of a dicarboxylic acrid and diamine. In the case of addition polymerizations, the comonomer content is oft only a few percent. For instance, small amounts of 1-octene monomer are copolymerized with ethylene to give specialized polyethylene.

Synthetic monomers [edit]

• Ethylene gas (H₂C=CH₂) is the monomer for polyethylene.
• Other modified ethylene derivatives include:
  • tetrafluoroethylene (F₂C=CF_ii) which leads to Teflon
  • vinyl chloride (H₂C=CHCl) which leads to PVC
  • styrene (C₆H₅CH=CH₂) which leads to polystyrene
• Epoxide monomers may exist cross linked with themselves, or with the addition of a co-reactant, to form epoxy
• BPA is the monomer precursor for polycarbonate
• Terephthalic acid is a comonomer that, with ethylene glycol, forms polyethylene terephthalate.
• Dimethylsilicon dichloride is a monomer that, upon hydrolysis, gives polydimethylsiloxane.
• Ethyl methacrylate is an acrylic monomer that, when combined with an acrylic polymer, catalyzes and forms an acrylate plastic used to create artificial boom extensions

Biopolymers [edit]

The term "monomeric protein" may also be used to draw one of the proteins making up a multiprotein circuitous.^[6]

Natural monomers [edit]

Some of the main biopolymers are listed beneath:

Amino acids [edit]

For proteins, the monomers are amino acids. Polymerization occurs at ribosomes. Ordinarily nigh 20 types of amino acid monomers are used to produce proteins. Hence proteins are not homopolymers.

Nucleotides [edit]

For polynucleic acids (DNA/RNA), the monomers are nucleotides, each of which is fabricated of a pentose saccharide, a nitrogenous base and a phosphate group. Nucleotide monomers are establish in the cell nucleus. Four types of nucleotide monomers are precursors to DNA and four different nucleotide monomers are precursors to RNA.

Glucose and related sugars [edit]

For carbohydrates, the monomers are monosaccharides. The nigh abundant natural monomer is glucose, which is linked past glycosidic bonds into the polymers cellulose, starch, and glycogen.^[seven]

Isoprene [edit]

Isoprene is a natural monomer that polymerizes to form natural condom, most frequently cis-1,4-polyisoprene, but besides trans-1,4-polymer. Synthetic rubbers are often based on butadiene, which is structurally related to isoprene.

See too [edit]

• Protein subunit
• List of publications in polymer chemistry
• Prepolymer

Notes [edit]

1. ^ Young, R. J. (1987) Introduction to Polymers, Chapman & Hall ISBN 0-412-22170-5
2. ^ International Union of Pure and Applied Chemistry, et al. (2000) IUPAC Gold Book, Polymerization
3. ^ Clayden, Jonathan; Greeves, Nick; Warren, Stuart; Wothers, Peter (2001). Organic Chemistry (1st ed.). Oxford University Press. pp. 1450–1466. ISBN978-0-19-850346-0.
4. ^ Jenkins, A. D.; Kratochvíl, P.; Stepto, R. F. T.; Suter, U. Westward. (1996). "Glossary of bones terms in polymer science (IUPAC Recommendations 1996)". Pure and Applied Chemical science. 68 (12): 2287–2311. doi:ten.1351/pac199668122287.
5. ^ D. Margerison, G. C. East, J. East. Spice (1967). An Introduction to Polymer Chemical science. Pergamon Printing. ISBN978-0-08-011891-eight. {{cite book}}: CS1 maint: uses authors parameter (link)
6. ^ Bruce Alberts, Alexander Johnson, Julian Lewis,Otin Raff, Keith Roberts, and Peter Walter, Molecular Biology of the Cell, 2008, Garland Science, ISBN 978-0-8153-4105-5.
7. ^ Ebuengan, Kaye. "Biomolecules: Nomenclature and structural properties of carbohydrates". Academia.edu.

Source: https://en.wikipedia.org/wiki/Monomer

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