Synthesis and properties of comb-shaped liquid-crystalline poly(phenylbenzoate methylsiloxane)s

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Synthesis and properties of comb-shaped liquid-crystalline poly(phenylbenzoate methylsiloxane)s. / Olbrich, M.; Lavrenko, P. N.; Evlampieva, N. P.; Kolbina, G. F.

In: Polymer Science - Series A, Vol. 38, No. 11, 01.11.1996, p. 1222-1227.

Research output: Contribution to journal › Article › peer-review

Author

Olbrich, M. ; Lavrenko, P. N. ; Evlampieva, N. P. ; Kolbina, G. F. / Synthesis and properties of comb-shaped liquid-crystalline poly(phenylbenzoate methylsiloxane)s. In: Polymer Science - Series A. 1996 ; Vol. 38, No. 11. pp. 1222-1227.

BibTeX

@article{3ffd3abb86d34d6e81d1fd25367f1ece,

title = "Synthesis and properties of comb-shaped liquid-crystalline poly(phenylbenzoate methylsiloxane)s",

abstract = "Poly(phenylbenzoate methylsiloxane)s with alkyl spacer groups of different length (4, 6, and 11 carbon atoms) were synthesized, studied, and the results of the study were compared with the behavior of the corresponding low-molecular-mass compounds that model the side chains of macromolecules. The temperatures of phase transitions to the LC state were determined. It was shown that in a dilute solution under an applied sinusoidal electric field, the polymers behave as flexible-chain polymers with each mesogenic unit oriented independently of the other units. In a mechanical shear field, the Maxwell constant changes its sign from positive in the monomer solution to negative for the polymer. This evidences that the entire macromolecule orients in the hydrodynamic field so that the main axes of mesogens are predominantly oriented normal to the axis of the macromolecule.",

author = "M. Olbrich and Lavrenko, {P. N.} and Evlampieva, {N. P.} and Kolbina, {G. F.}",

year = "1996",

month = nov,

day = "1",

language = "English",

volume = "38",

pages = "1222--1227",

journal = "Polymer Science - Series A",

issn = "0965-545X",

publisher = "МАИК {"}Наука/Интерпериодика{"}",

number = "11",

}

RIS

TY - JOUR

T1 - Synthesis and properties of comb-shaped liquid-crystalline poly(phenylbenzoate methylsiloxane)s

AU - Olbrich, M.

AU - Lavrenko, P. N.

AU - Evlampieva, N. P.

AU - Kolbina, G. F.

PY - 1996/11/1

Y1 - 1996/11/1

N2 - Poly(phenylbenzoate methylsiloxane)s with alkyl spacer groups of different length (4, 6, and 11 carbon atoms) were synthesized, studied, and the results of the study were compared with the behavior of the corresponding low-molecular-mass compounds that model the side chains of macromolecules. The temperatures of phase transitions to the LC state were determined. It was shown that in a dilute solution under an applied sinusoidal electric field, the polymers behave as flexible-chain polymers with each mesogenic unit oriented independently of the other units. In a mechanical shear field, the Maxwell constant changes its sign from positive in the monomer solution to negative for the polymer. This evidences that the entire macromolecule orients in the hydrodynamic field so that the main axes of mesogens are predominantly oriented normal to the axis of the macromolecule.

AB - Poly(phenylbenzoate methylsiloxane)s with alkyl spacer groups of different length (4, 6, and 11 carbon atoms) were synthesized, studied, and the results of the study were compared with the behavior of the corresponding low-molecular-mass compounds that model the side chains of macromolecules. The temperatures of phase transitions to the LC state were determined. It was shown that in a dilute solution under an applied sinusoidal electric field, the polymers behave as flexible-chain polymers with each mesogenic unit oriented independently of the other units. In a mechanical shear field, the Maxwell constant changes its sign from positive in the monomer solution to negative for the polymer. This evidences that the entire macromolecule orients in the hydrodynamic field so that the main axes of mesogens are predominantly oriented normal to the axis of the macromolecule.

UR - http://www.scopus.com/inward/record.url?scp=0030273952&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0030273952

VL - 38

SP - 1222

EP - 1227

JO - Polymer Science - Series A

JF - Polymer Science - Series A

SN - 0965-545X

IS - 11

ER -

ID: 142923610