Data for polymers

Thermogravimetric Data For Polymers Modified Through Condensation With Group IV A and B Reactants... 

Zoller, P. and Walsh, D.]., Standard Pressure-Volume-Temperature Data for Polymers, Technomic Publishing Co., Inc., Lancaster, PA, 1995... 

Nardone J (1979) Computerized numeric data for polymers. J Chem Inf Comp Sci 19 71-73... 

No thermodynamic signature at Tg is evident in specific heat data at equilibrium, but a peak is observed under nonequilibrium conditions and is often taken as the definition of the glass transition. Unfortunately, this nonequilibrium peak cannot be addressed within the LCT of glass formation. We strictly avoid a discussion of the specific heat, given the complications of interpreting these data for polymer materials and the omission of the important vibrational component in the LCT treatment. 

TABLE 13. Emission Data for Polymers 77—78 and the Model Compound 80, in Solid State at 298 K... 

The quantum yield data for polymer 5 in Figure 3 has an exponential dependence on the inverse temperature, and activation parameters were... 

Cone Calorimeter Data for Polymers and Pre-Ceramic Polymer-Polymer Blends... 

The method works extremely well for calculations within the temperature and pressure range used to determine the equation constants. The average error in such a case is less than the experimental error of approximately 0.1% reported for volumetric measurements. The accuracy of this method for extrapolations is not known due to the lack of sufficient P-V-T data for polymers. 

In Table 6, we can see the average thermophysical properties of kerogenes as compared to the values of the same characteristics of thermoplasts. Thermophysical properties of processed compositions in the area of phase transitions are of prime importance. In Table 6, we can see the avera values of the corresponding thermal co-efficients at 100-150 °C. The data for polymers are cited from [69,70]. Assuming that there are no local thermal tensions in the melt, we can calculate the composition s thermal linear expansion coefficient by the additive equation [69,70] ... 

Secondly, the fact that polymers are emchored to the surface by many points of attachment severely reduces their mobility. Very slow surface processes can occur, as has been demonstrated by means of competitive adsorption studles -S). Polyelectrolytes, which can form very strong ionic bonds with solid substrates, are also found to relax very slowly, or not at all. Addition of small ions (salt) can facilitate relaxation somewhat. All this Implies that in Judging adsorption data for polymers, one should be aware of the possibility that off-equillbrlum states may persist over longer periods of time. 

The results from the 6-3IG basis set are close to what is observed experimentally. Calculations like these are valuable for molecular mechanics simulations because they provide high quality input data for polymer fragments. In addition, rotational isomeric state and atomistic Monte Carlo simulations of single isolated chains benefit greatly from accurate data derived from quantum mechanical calculations. 

Main data for polymers (0298 < 10 ) from other monomers are available on tetracyanoethylene ... 

A computer simulation of size-exclusion chromatography-viscom-etry-light scattering is described. Data for polymers with a Flory-Schulz molecular weight distribution (MWD) are simulated, and the features of the different detector signals are related to the molecular weight and polydispersity of the distribution. The results are compared with previously reported simulated results using a Wesslau MWD. 

Amino- and amido-functionalized monomers can also be polymerized directly with metal catalysts. Living radical polymerization of 2-(dimethylamino)-ethyl methacrylate (FM-5) was achieved with 1-31 (X = Br)/CuBr/L-29 in dichlorobenzene at 50 °C.314 Its ammonium salt (FM-6) was polymerized from the surface of a cross-linked polystyrene latex with CuBr/ L-l in water at 80 °C to generate hydrophilic shells, although there were no data for polymer molecular weight.248 As described above (section II.C.6), (methacrylamides with at least their amido protons unprotected (FM-7, FM-8, and FM-9) can be polymerized with copper-based systems,117168,217,218 but a further optimization seems to be necessary. 

Table 1 Pulsed combustion flow calorimetry (PCFC) data for the polycarbonates Comparison of PCFC data for polymer 6 to that for BPA polycarbonate...

Table 2 PCFC results for the polyarylethers (comparison of PCFC HR capacity, total heat, and char data for polymers 7, 8, and 10 to polyethylene and polystyrene)...

As shown earlier in Section 3.2.2, scanning temperamre DSC provides a mpid method for measuring the total heat of reaction for network polymerization, and there are many such applications to provide baseline data for polymer chemorheoiogy. For example, in the... 

Some recent data for polymers of and are shown in Table... 

Figure 2.18 Test of Bemoullian model. Data for polymer 1 of Problem 2.14.

Several comments can be made about the nature of these approximate results. Note that Eqs. (6.23) and (6.24) give power-law region for both viscosity and normal stresses most experimental data for polymer solutions and melts do in fact exhibit a prominent power law region which extends over about three decades of shear rates. The values of the exponents — 2/3 for viscosity and 4/3 for the normal stress function - are not unreasonable values. In the power-law region it is often observed that the exponent for 6 is about twice that for tj. We must, however, note that comparison of Eqs. (6.21) and (6.22) with Eqs. (6.8) and (6.9) and a similar comparison of the power-law results shown in Table 2 indicate that the approximate procedure does not agree very well with the exact calculations. 

Experimental data for polymer solutions have been reported by Osaki, Tamura, Kurata, and Kotaka (60), by Booij (12), and by Macdonald (50). Osaki et al. used polystyrene in toluene, polymethylmethacrylate in diethylphthalate, and poly-n-butylmethacrylate in diethylphthalate. Booij s data were for aluminum dilaurate in decalin and a rubbery ethylene-propylene copolymer in decalin. Macdonald s experiments were performed on several polystyrenes in several Aroclors and on polyisobutylene in Primol. Shortly after the original publication of the Japanese group, Macdonald and Bird (51) showed that a nonlinear viscoelastic constitutive equation was capable of describing quantitatively their data on both the non-Newtonian viscosity and the superposed-flow material functions. Other measurements and continuum model calculations have been described by Booij (12 a). 

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