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  • ...tage polyoxyethylene content (e.g., L61 = Pluronic with a polyoxypropylene molecular mass of 1,800 g/mol and a 10% [[polyoxyethylene]] content). In the example Because of their [[amphiphilic]] structure, the polymers have [[surfactant]] properties that make them useful in indus
    5 KB (782 words) - 10:09, 20 September 2010
  • ...8</sub>)<sub>n</sub>. It should not be confused with [[polybutene]], a low molecular weight [[oligomer]] with a different [[repeat unit]]. ...f [[1-butene]] using supported [[Ziegler-Natta catalyst]]s. PB-1 is a high molecular weight, linear, [[Tacticity#Isotactic_polymers|isotactic]], and [[Crystalli
    12 KB (1,699 words) - 10:09, 20 September 2010
  • ...valent netpoints which prevent the polymer from reforming its usual coiled structure. The hard to soft segment ratio is often between 5/95 and 95/5, but ideally Polymers in this elastic state with [[number average molecular weight]] greater than 20,000 stretch in the direction of an applied externa
    21 KB (2,974 words) - 10:09, 20 September 2010
  • ...lymers [[crystallinity]], melt and [[glass transition]] temperatures and [[molecular weight]]. Each of these factors needs to be assessed on how they affect the ...er chains into shorter water-soluble fragments. This causes a reduction in molecular weight without the loss of physical properties as the polymer is still held
    8 KB (1,069 words) - 10:09, 20 September 2010
  • Meyers, M.A., et al., "Biological Materials: Structure & Mechanical Properties", Progress in Materials Science, Vol. 53, p. 1 (200 ...epetitive units called [[monomer]]s. Biopolymers often have a well defined structure, though this is not a defining characteristic (example:ligno-cellulose):
    68 KB (9,959 words) - 10:10, 20 September 2010
  • ...]]s, such as [[polyethylene]]. They are not to be confused with the high [[molecular weight]] polymer [[polybutene-1]]. ...The grades are determined mainly by [[molecular weight]], with the higher molecular weight grades having increasing [[viscosity]]. The [[oligomer]] degrades at
    4 KB (554 words) - 10:10, 20 September 2010
  • ==Chemical structure== ...s can reveal how the short chain branches are distributed over the various molecular weights.
    4 KB (482 words) - 10:10, 20 September 2010
  • The melt flow rate (MFR) or [[melt flow index]] (MFI) is a measure of molecular weight of polypropylene. The measure helps to determine how easily the molt An important concept in understanding the link between the structure of polypropylene and its properties is [[tacticity]]. The relative orientat
    25 KB (3,657 words) - 10:10, 20 September 2010
  • [[File:Polyethylenimin.svg|thumb|right|The structure of linear polyethylenimine.]] ...are solids at [[room temperature]] where branched PEIs are liquids at all molecular weights. Linear polyethyleneimines are soluble in hot water, at low pH, in
    4 KB (606 words) - 10:10, 20 September 2010
  • ...''' is a [[homopolymer]] of diallyldimethylammonium chloride (DADMAC). The molecular weight of polyDADMAC is typically in the range of hundreds of thousands of ...John | first = Wilson | last2 = et al. | publication-date = 2002 | title = Structure and Properties of PolyDADMAC for Water Purification| url = http://academic.
    4 KB (452 words) - 10:10, 20 September 2010
  • <tr><td>[[Molecular mass]]</td><td>200,000 to 100 million Daltons</td></tr> <tr><td>[[Simplified molecular input line entry specification|SMILES]]</td><td>???????</td></tr>
    4 KB (523 words) - 10:10, 20 September 2010
  • ...polystyrene blocks in the main picture is 102,000; the inset picture has a molecular weight of 91,000, producing slightly smaller domains. The spacing between d
    11 KB (1,609 words) - 10:10, 20 September 2010
  • ...the reflectance ([[gloss]]), as well as forming a protective coating. The structure of paint consists of [[pigments]] in a matrix of [[resin]]. ...ww.univ-bpclermont.fr/LABOS/lpmm],[http://www.cnep-ubp.com] specialists of molecular photochemistry, to provoke in accelerated controlled conditions the same ch
    12 KB (1,780 words) - 10:10, 20 September 2010
  • | ImageFile = SBR.svg|right|243px|thumb|Chemical structure of styrene-butadiene | Section3 = {{Chembox Structure
    5 KB (640 words) - 10:10, 20 September 2010
  • ==Correlation of chemical structure and electrical conductivity== ...Å, respectively.<ref>{{cite journal|doi=10.1103/PhysRevLett.51.1191|title=Molecular Geometry of cis- and trans-Polyacetylene by Nutation NMR Spectroscopy|year=
    22 KB (3,022 words) - 10:10, 20 September 2010
  • ...que and white (particle size up to a few microns) depending on its crystal structure and particle size. Its monomer (bis-β-hydroxyterephthalate) can be synthes ...several things happen: discoloration, chain scissions resulting in reduced molecular weight, formation of [[acetaldehyde]] and [[cross-link]]s ("gel" or "fish-e
    43 KB (6,272 words) - 10:11, 20 September 2010
  • ...e dendrons like cake slices in green. It also provides a concrete chemical structure showing a [[polymethylmethacrylate]] ([[Poly(methyl methacrylate)|PMMA]]) b | [[Image:Baozhongdenpol2.JPG|upright|alt=chemical structure of a third generation dendronized polymer]]
    5 KB (724 words) - 10:11, 20 September 2010
  • ...s were clusters of small molecules (called [[colloid]]s), without definite molecular weights, held together by an unknown force, a concept known as [[associatio ...n|modified further]] following translation in order to provide appropriate structure and functioning.
    45 KB (6,501 words) - 10:11, 20 September 2010
  • ...molecule antimicrobial agents excel at the diffusion step due to their low molecular weight, while adsorption is better achieved by antimicrobial polymers. The ===Molecular Weight===
    26 KB (3,675 words) - 10:11, 20 September 2010
  • ...last=Chen|first=X|coauthors=Ye, B., Tong, M.|year=2005|title=Metal-organic molecular architectures with 2,2′-bipyridyl-like and carboxylate ligands|journal=Co ...techniques. The mechanisms of [[Molecular self-assembly]] processes on a molecular level are currently being investigated, however it is accepted that coordin
    23 KB (3,302 words) - 10:11, 20 September 2010

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