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Dokument Nr.	200301302 (klicken Sie bitte auf die Dokumentnummer um dieses Dokument anzuzeigen)
Titel	Synthesis and characterization of chiral smectic side-chain liquid crystalline polysiloxanes and ionomers containing sulfonic acid groups
Abstract	The synthesis of new chiral smectic A (S(A)) side-chain liquid crystalline polysiloxanes (LCPs) and ionomers (LCIs) containing 4-allyloxy-benzoyl-4-(S-2-ethylhexanoyl) p-benzenediol bisate (ABB) as mesogenic units and 4-[[4-(2-propenyloxy)phenyl]azo]benzenesulfonic acid (AABS) as nonmesogenic units is presented. The chemical structures of the monomers and polymers are confirmed by FTIR spectroscopy or (1)H-NMR. Differential scanning calorimetry (DSC), optical polarizing microscopy, and X-ray diffraction measurements reveal that all the polymers P(I)-P(IV) and ionomers P(V)-P(VI) exhibit S(A) texture. The results seem to demonstrate that the tendency toward the S(A)-phase region increases with increasing sulfonic acid concentration, and the thermal stability of the S(A) phase is determined by the flexibility of the polymer backbones and the interactions of sulfonic acid groups. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 2335-2340, 2001 (orig.)
Control terms engl.	CONCENTRATION; DSC; FLEXIBILITY; IONOMERS; IR SPECTROSCOPY; LIQUID CRYSTALS; MAIN CHAIN; MICROSCOPY; MONOMERS; NMR; POLYSILOXANES; SCATTERING; SIDE GROUPS; STABILITY, THERMAL; SULFONIC ACIDS; SYNTHESIS; X-RAYS
Control terms german	KONZENTRATION; DSC; FLEXIBILITAET; IONOMERE; IR-SPEKTROSKOPIE; FLUESSIGKRISTALLE; HAUPTKETTE; MIKROSKOPIE; MONOMERE; NMR; POLYSILOXANE; STREUUNG; SEITENGRUPPEN; STABILITAET, THERMISCHE; SULFONSAEUREN; SYNTHESE; ROENTGENSTRAHLEN