A quick, simple demonstration to distinguish between HD and LD polyethylene. Kenneth E. Kolb, and Doris K. Kolb. J. Chem. Educ. , 1986, 63 (5), p 417...
Since its accidental discovery in 1933, polyethylene (PE) has become the world's ... and 200 °C. Since the 1960's a linear, high-density (HD), more crystalline PE ...
May 31, 2001 - Simple Gel Swelling Experiments Distinguish between Associating and Nonassociating PolymerâSurfactant Pairs ... We also study how the swelling equilibria are affected by added salt and demonstrate that valuable information may be gai
Alkyl sulfate surfactants are shown to bind to HEC, but only for tail lengths longer ... modified HEC, but the extent of gel swelling (and, presumably, surfactant ...
Jul 23, 2009 - The basic requirement for reliable accelerated ageing is that the course of degradation is identical at the service and test conditions. Surprisingly enough, in spite of the many studies and the great technical and economical importanc
Jul 23, 2009 - The search for accelerated testing procedures to predict the useful service life for polyethylene (PE) compositions has been the main incentive for numerous studies on the thermo-oxidative degradation of PE in oxygen-rich atmospheres b
A quick and effective demonstration of anti-Markovnikov addition to alkenes. Trevor M. Brown, Alan T. Dronsfield, and Ian Hitchcock. J. Chem. Educ. , 1991, 68 ...
Stopper and shake briefly to extract the ethanoic acid and unreacted HBr. Transfer the lower CCh solution (Pasteur pipet) to a second tube and shake with ...
get as far awayfrom one another as they can without stretching the latextubing.It may be convenient to have a large cardboard compass so that the approximate ...
cardboard compass so that the approximate angle can be read. When four snaps are ... A very tall student or a stepstool is helpful at this point. They also need ...
Rh(I)-Catalyzed Transformation of Propargyl Vinyl Ethers into (E,Z)-Dienals: Stereoelectronic Role of trans Effect in a Metal-Mediated Pericyclic Process and a Shift from Homogeneous to Heterogeneous Catalysis During a One-Pot Reaction. Dinesh V. Vid
