Lamellar spacing, comparison

Fig. 35 Temperature dependence of lamellar spacing (upper half) and angle of chain tiltwith respect to the lamellar normal (lower half) for extended-chain crystals of end-deuterated alkane C216H385D49 grown from toluene solution at 70 °C. SAXS spectra were recorded during heating from 60 °C to the melting point. Data for heating at 1 °C/min (solid diamonds) and 6 °C/min (open squares) are shown for comparison (from [84] by permission of American Chemical Society)...

INVESTIGATION OF LAMELLAR SPACING AND INTERFACIAL THICKNESS OF STYRENE-ISOPRENE BLOCK COPOLYMER FILMS CAST FROM SOLUTIONS AND ITS COMPARISON WITH CURENT THEORIES... 

Figs. 3 and 4 show comparison of the domain properties, the lamellar spacing D and the interfacial thickness At,... 

Fig. 3. Comparison of observed lamellar spacing with calculated ones...

Measurements of the lamellar domain spacing by a number of groups (Douzinas et al. 1991 Nojima et al. 1995 Rangarajan et al. 1993 Unger et al. 1991) as a function of Nc yielded exponents consistent with eqn 5.24. However, this comparison assumes that d = 4 which is not usually even a good approximation, thus the agreement seems fortuitous. 

Figure 2.13 is obviously the one encountered in the liquid crystal. As a comparison, the addition of oleic acid with one polar group located at the interface gives the expected increase in interlayer spacing, as shown in Figure 2.14. Destabilization of the lamellar liquid crystal is not only affected by the diacid it appears to be a general property shared by other hydrotropes, such as alkanols, short-chain...

Figure 4.12 Comparison of the SAXS profiles for the quenched and isothermally crystallized samples (PE-Z)-PP diblock copolymer). The arrows indicate the diffraction peak positions (1st and 3rd peaks) due to the lamellar microdomains. The inset shows the q I vs q plot to evaluate the long spacing of the crystalline lamellae [144].

Figure 4 (a) Interfacial area A and (b) interdomain spacing D as functions of composition for different levels of segregation. The inserts show the corresponding values for the double diamond (D) and hexagonally perforated lamellar (PL) structures (dashed lines) in comparison to the double gyroid (solid line). Reprinted with permission from Matsen, M. W. Bates, F. S. J. Chem. Phys. 1997, 106 6), 2436-2448. ... 

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