measurement of number average molecular weight of styrene oligomer by 13c-nmr method,measurement of number average molecular weight of styrene oligomer b..
Song Wang;Xiao-hu Yan;Rong-shi Cheng Department of Polymer Science and Engineering, Nanjing University, Nanjing 210093, China.  MEASUREMENT OF NUMBER AVERAGE MOLECULAR WEIGHT OF STYRENE OLIGOMER BY 13C-NMR METHOD[J]. Chinese Journal of Polymer Science. 1999(02)...
elastomer of a number-average molecular weight Mn of less than 2000 g/mol which has a glass transition temperature Tg of greater than −25° C., and it is such that said elastomer comprises one or more units resulting from the polymerisation of a vinylaromatic monomer, such as styrene. ...
The equations for predicting the number-average molecular weight are derived on the basis of the three stage polymerization model (TSPM) in this paper. By applying the equations, a plotting approach is proposed to determine the apparent initiator efficiency defined as f[([alpha]td+1)/2] and ...
A“macromolecule” is an organic compound having a number average molecular weight of greater than 1500 Daltons and may be reactive or non-reactive. A“macromonomer” or “macromer” is a macromolecule that has one group that can undergo chain growth polymerization, and in particular, free radic...
where [M]psat and [M]wsat are the saturation values of the monomer concentration within the particles and in the aqueous phase, respectively, n¯ the average number of radicals per particle, NA Avogadro's number, kl the mass transfer rate coefficient, ad the surface area of a monomer drop...
b) bis-structure succinimide dispersant (nitrogen content 0.018 wt %, prepared by reaction between polyalkylene polyamine (containing nitrogen atoms of 5.0 (mean number) in a molecule) and a product produced by thermal reaction of polybutene (number average molecular weight: approx. 1,000, having...
Mass Average Melting Point Element Name Series Symbol Thermal Conductivity Year of Discovery HazMat Household Guide to Handling Household Chemicals The Dangers of Lawn Chemicals at Home Industry Emergency Response Guidebook (ERG) List materials by UN Number Material Name Guide Pages Table of...
The average functionality of the second polyol component is at least 2, preferably from at least 2 to 6 and more preferably from at least 2 to 4. As mentioned above, the second polyol component (2) may comprise a polymer polyol. Thus, the suitable % by weight of solids this second ...
In the present case, the average molecular weight is ~ 105 and the molecular weight of a monomer is 57; therefore, the polymerization number, n is 1.75 × 103. To calculate lk and N in an individual PAAm chain, we assume that the angle and distance between C–C bonds are 109.5° and...