In Figure 12c, it is shown that the hardness increases when the higher functionality and low equivalent weight RD is used, but is not changed by the EG--DEM based RD; the former contributes more crosslink density than the latter.
The high functionality/low equivalent weight RD is used as part of the donor.
We selected the IGG III as the Gaussian distribution function to construct the equivalent weight matrix, as follows (Yang, 2002):
where [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] represents the equivalent weight matrix of the (i,i) element, and [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] is the weight matrix of the original observation noise i .
A representative procedure for the synthesis of a PDMS copolymer containing pendant trimethoxysilane groups and tertian/ amino groups (PMHS-PbMS-7)\vas as follows: to a 100 mL round-bottom flask equipped with a nitrogen inlet, condenser, and temperature controller, 20.00 g of a PMHS-PDMS copolyrner possessing a hydride equivalent weight
245 g/mol (0.082 mof of hydride) and 3.37 g of allyl-dimethylamine (0.041 mol) were dissolved in 30.00 g of toluene.
The polymer composition is expressed in terms of the equivalent weight
defined as the weight in grams of polymer containing one equivalent of acid or, alternatively, the comonomer molecular weight plus 100n.
In all three cases, very good to excellent correlations were found between continuous real-time DES output and the values of characteristic QC parameters (viscosity, acid number, epoxy equivalent weight
, % NCO, ATR-FTIR peak heights for reactants and products, and GPC data) determined by off-line analysis of samples taken periodically during the reactions.