The structure of copoly(4-hydroxybenzoic acid/2-hydroxy-6-naphthoic acid): 2. An atomic model for the copolyester chain

Diffraction from thermotropic copolyester molecules

“…There is reasonable agreement and it is probable that the minor differences are within the experimental error of the data. As the intense peak at s = 3 A -1 is not a true invariant peak its breadth is dependent upon both the spatial correlation along the chain and the mismatch between: 2) A recent publication by Chivers, Blackwell and Gutierrez [14] also lists the results of calculations based on an autocorrelation function related to the probability of particular neighbours in a random chain. These new data also agree well with experiment.…”

Effects of monomer structures on the evolution of liquid-crystal texture and crystallization during thin-film polymerization

“…The lengths of the ANA and ABA units in the polymer chains are 8.37 and 6.35 Å, respectively. 19 IA is a kind of modifying monomer for LCPs that introduces the kink into a molecular chain to reduce the T m . However, the drawback of metalinkage is that it will disturb the liquid crystallinity if its content is too high.…”

X‐ray Analysis of Transesterification in Blends of Thermotropic Copolyesters

“…Simulated X-ray scattering for idmite (slightly sinuous) chains of copoly(HBA/HNA) with the same monomer ratios as in the observed data in Figure 1 The actual d-spacings agree well within the experimental uncertainty, and the small differences in intensity are probably due to packing effects that are not considered in Eq. (1). When one changes the statistics to consider blocky structures, then the peaks shift and split, and the good agreement is lost, so that all but minimal non-randomness can be ruled out [6-81.…”