Thermal and biphasic behaviour of a side-chain smectic polyacrylate

M. Laus; A. S. Angeloni; G. Galli; E. Chiellini

doi:10.1016/0040-6031(93)80248-9

Thermal and biphasic behaviour of a side-chain smectic polyacrylate

M. Laus, A. S. Angeloni, G. Galli, E. Chiellini

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

The thermal and biphasic behaviour is reported for a side-chain smectic polyacrylate having a number average molecular weight of 59 000 g mol^-1 and a first polydispersity index of 1.9. Evidence is provided for the existence of smectic Ad and smectic A1 mesophases, the former being enantiotropic and the latter monotropic. The biphasic behaviour was studied by DSC by annealing the polymer inside the apparent biphasic gap associated with the smectic Ad-isotropic transition. A biphasic temperature range in which isotropic and smectic Ad phases coexist at equilibrium was revealed, and the thermodynamic width of this biphasic region was estimated to be about 2.0 K.

Lingua originale	Inglese
pagine (da-a)	49-57
Numero di pagine	9
Rivista	Thermochimica Acta
Volume	227
Numero di pubblicazione	C
DOI	https://doi.org/10.1016/0040-6031(93)80248-9
Stato di pubblicazione	Pubblicato - 10 nov 1993
Pubblicato esternamente	Sì

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10.1016/0040-6031(93)80248-9

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title = "Thermal and biphasic behaviour of a side-chain smectic polyacrylate",

abstract = "The thermal and biphasic behaviour is reported for a side-chain smectic polyacrylate having a number average molecular weight of 59 000 g mol-1 and a first polydispersity index of 1.9. Evidence is provided for the existence of smectic Ad and smectic A1 mesophases, the former being enantiotropic and the latter monotropic. The biphasic behaviour was studied by DSC by annealing the polymer inside the apparent biphasic gap associated with the smectic Ad-isotropic transition. A biphasic temperature range in which isotropic and smectic Ad phases coexist at equilibrium was revealed, and the thermodynamic width of this biphasic region was estimated to be about 2.0 K.",

author = "M. Laus and Angeloni, {A. S.} and G. Galli and E. Chiellini",

note = "Funding Information: Financial support from the Minister0 dell{\textquoteright}Universit8 e della Ricerca Scientificae Tecnologica of Italy (MURST 40%) is acknowledged.",

year = "1993",

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doi = "10.1016/0040-6031(93)80248-9",

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T1 - Thermal and biphasic behaviour of a side-chain smectic polyacrylate

AU - Laus, M.

AU - Angeloni, A. S.

AU - Galli, G.

AU - Chiellini, E.

N1 - Funding Information: Financial support from the Minister0 dell’Universit8 e della Ricerca Scientificae Tecnologica of Italy (MURST 40%) is acknowledged.

PY - 1993/11/10

Y1 - 1993/11/10

N2 - The thermal and biphasic behaviour is reported for a side-chain smectic polyacrylate having a number average molecular weight of 59 000 g mol-1 and a first polydispersity index of 1.9. Evidence is provided for the existence of smectic Ad and smectic A1 mesophases, the former being enantiotropic and the latter monotropic. The biphasic behaviour was studied by DSC by annealing the polymer inside the apparent biphasic gap associated with the smectic Ad-isotropic transition. A biphasic temperature range in which isotropic and smectic Ad phases coexist at equilibrium was revealed, and the thermodynamic width of this biphasic region was estimated to be about 2.0 K.

AB - The thermal and biphasic behaviour is reported for a side-chain smectic polyacrylate having a number average molecular weight of 59 000 g mol-1 and a first polydispersity index of 1.9. Evidence is provided for the existence of smectic Ad and smectic A1 mesophases, the former being enantiotropic and the latter monotropic. The biphasic behaviour was studied by DSC by annealing the polymer inside the apparent biphasic gap associated with the smectic Ad-isotropic transition. A biphasic temperature range in which isotropic and smectic Ad phases coexist at equilibrium was revealed, and the thermodynamic width of this biphasic region was estimated to be about 2.0 K.

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U2 - 10.1016/0040-6031(93)80248-9

DO - 10.1016/0040-6031(93)80248-9

M3 - Article

SN - 0040-6031

VL - 227

SP - 49

EP - 57

JO - Thermochimica Acta

JF - Thermochimica Acta

IS - C

ER -

Thermal and biphasic behaviour of a side-chain smectic polyacrylate

Abstract

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