Effect of shape of mesogenic group on the formation of liquid crystalline phase in polymers

Struktur-Eigenschafts-Beziehungen kristallin-fldssiger Seitenkettenpolymere werden untersucht. Die Anderung der mcsomorphen Eigenscliaften bei gezielten Strukturvariationen werden dabei mit den entsprechcnden Resultaten an den Monomercn verglichen. Variicrt werden starrer mesogener Grundkorper, Spacer und Flugelgruppe. Tep.nzompon-Mudtco-tcpucmannuuecme noauaepbi. B n u n u e omaenbnb6x cmpytcmypicbrx ane~enmoe Ha acuaicoxpucmannuuecicue csoiicmsa n o m x u o m a n o s c a e 3 0 z e i t~b~~u 60li-osbk~u zpynnawuBCCJIeAOBaHa CBH3b MelK,Q' CTPYKTYPOP II CBOPCTBBMIZ lKllAKO-KpMCTaJIJIBqeCKIIX nOJIMMepOB C 6OKOBbIMM rpynnaMM. CPaBHABBIOTCR I13MeHeHHR Me30MOPl#IHbIX CBOPCTB B 3aBBCHMOCTH OT BapHaqllll CTPYKTYPbI C COOTBeTCTByIO~IZMH pe3yJIbTaTaMM AJIH MOHOMepOB. Id3MeHRIOTCR XeCTKlle Me30lXHHbIe 4parMeHTb1, Cn3CephI M r n 6~~e 60KOBbIe I'pJ'nIIbI.Therntotrop liquid crystalline polymers. The effect of the structure units on the liquid crystalline properties of polysiloxanes with mesogenic side groups T h e structure-property relationships of liquid crystalline comb-like polymers are discussed. The changes of mesomorphic properties a t specific structure variations are correlated with results from the monomers. The rigid mesogenic core, the spacer and the wing group are variated.

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Thermotrop kristallin‐flüssige Polymere. Der Einfluß einzelner Strukturelemente auf die kristallin‐flüssigen Eigenschaften von Polysiloxanen mit mesogenen Seitengruppen

Krücke¹,

Schlossarek²,

Zaschke³

1988

Acta Polymerica

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The recent developments of thermotropic liquid crystalline polymers

Chung

1986

Polymer Engineering & Sci

203

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The historical development of both main‐chain (M.C.) and side‐chain (S.C.) liquid crystalline polymers (LCPs) is presented. Synthetic routes and characterization techniques for LCPs are introduced. Various approaches to reduce the melting points of M.C. LCPs and to increase the mesogenic order of S.C. LCPs are reviewed and evaluated. The criteria to form a liquid crystalline phase are then discussed. Comparisons among thermotropic, lyotropic, and low‐molecular‐weight liquid crystals are also made. It is concluded that the preparation of LCPs has been well developed by the industry, but that the understanding of the formation of LC domains has not been completely understood. The theoretical explanations for some unexpected results are still not available. These anomalies are detailed in this work. Future research activity en LCPs for plastics engineers is also mentioned in this article.

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Effect of the chemical constitution of the side-chain on the formation and the structure of mesophases in some polysiloxanes

Mauzac

Hardouin

Richard

et al. 1986

European Polymer Journal

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Effect of shape of mesogenic group on the formation of liquid crystalline phase in polymers

Cited by 4 publications

References 2 publications

Thermotrop kristallin‐flüssige Polymere. Der Einfluß einzelner Strukturelemente auf die kristallin‐flüssigen Eigenschaften von Polysiloxanen mit mesogenen Seitengruppen

Thermotrop kristallin‐flüssige Polymere. Der Einfluß einzelner Strukturelemente auf die kristallin‐flüssigen Eigenschaften von Polysiloxanen mit mesogenen Seitengruppen

The recent developments of thermotropic liquid crystalline polymers

Effect of the chemical constitution of the side-chain on the formation and the structure of mesophases in some polysiloxanes

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