1484277 Molecular weight regulated ethylene copolymerization UNIROYAL Inc 23 Aug 1974 [27 Aug 1973] 37103/74 Heading C3P Ethylene is copolymerized with an alphamonoolefin, and optionally with a non-conjugated polyene, in solution, in the presence of a catalyst comprising a vanadium compound and an...
Chemical, physical and thermal properties of carbon dioxide. Phase diagram included. Compression and Expansion of Gases Isothermal and isentropic gas compression and expansion processes. Ethylene - Thermophysical Properties Chemical, physical and thermal properties of ethylene, also called ethene, acetene...
molec′ular weight′ n. the average weight of a molecule of an element or compound measured in units based on 1/12 the weight of the carbon-12 atom; the sum of the atomic weights of all the atoms in a molecule.Abbr.:mol. wt. ...
Polymers are made up of many molecular weights or a distribution of chain lengths. The polymer is comprised of a bag of worms of the same repeating unit, ethylene (C2H4), with different lengths, some longer than others. For example, polyethylene, -(C2H4)-1000, has some chains (worms) wit...
Viscosity–molecular weight characterization of poly(ethylene terephthalate) (PET) in hexafluoroisopropanol (HFIP), pentafluorophenol (PFP), and HFIP/PFP is reported for the first time using size exclusion chromatography-low angle laser light scattering (SEC–LALLS) measurements. These stron...
(Tm) of the ultra-high-molecular-weight ethylene/polyene copolymer determined as the main fusion endothermic peak at the time of the second elevation of the temperature, and the quantity of heat based on said crystal fusion endothermic peak (Tp) is at least 15% based on the total fusion ...
Figure 1.15. Water permeation of ethylene–vinyl alcohol copolymer vs polymer molecular weight.6 Show moreView chapterExplore book Introduction to Plastics and Polymers Laurence W. McKeen, in Fatigue and Tribological Properties of Plastics and Elastomers, 2010 3.4 Molecular Weight A polymer’s molecular...
polymer structure/ molecular weightmicrohardnesspoly(ethylene terephthalate)different temperaturesPoly(ethylene terephthalate) (PET) was annealed in vacuum at different temperatures (190–260°C) for different times (10min–24h) in order to examine the mechanical properties (microhardness) of PET samples ...
Development of sterically stabilized poly(isobutyl 2-cyanoacrylate) nanoparticles by chemical coupling of poly(ethylene glycol) To develop rapidly biodegradable "stealth" nanoparticles, a physicochemical investigation was done on the formation of PEG-coated poly(isobutyl 2-cyanoacry......
of ethylene and 3-20C alpha- olefin, having (B) a density of 0.880-0.930g/cm<2>, preferably 0.880-0.925g/cm<2>, (C) crystallinity of <=65%, preferably 25-65%, (C) a modulus in flexure of 500-4,000, preferably 1,000-4,000 and (E) an average particle diameter of 1-50mu ...