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Phase equilibrium and phase separati...

Shen, Chungsea.

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Phase equilibrium and phase separation dynamics in polymer dispersed liquid crystals.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Phase equilibrium and phase separation dynamics in polymer dispersed liquid crystals./
作者:	Shen, Chungsea.
面頁冊數:	245 p.
附註:	Source: Dissertation Abstracts International, Volume: 56-04, Section: B, page: 2182.
Contained By:	Dissertation Abstracts International56-04B.
標題:	Engineering, Chemical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9528465

Phase equilibrium and phase separation dynamics in polymer dispersed liquid crystals.
Shen, Chungsea.

Phase equilibrium and phase separation dynamics in polymer dispersed liquid crystals. - 245 p.

Source: Dissertation Abstracts International, Volume: 56-04, Section: B, page: 2182.

Thesis (Ph.D.)--The University of Akron, 1995.

Thermodynamic phase equilibrium of a polymer dispersed liquid crystal (PDLC) consisting of monomeric liquid crystals and a polymer have been investigated theoretically and experimentally. The equilibrium limits of phase separation as well as phase transition of a PDLC system were calculated by taking into consideration the Flory-Huggins (FH) theory for the free energy of mixing of isotropic phases in conjunction with the Maier-Saupe (MS) theory for phase transition of a nematic liquid crystal. The effects of molecular weight and molecular weight distribution on the phase equilibrium of the polymer dispersed liquid crystal (PDLC) system were investigated. Time resolved light scattering and microscopy studies were undertaken to investigate the phase transition of a polymer dispersed liquid crystal. The simulation of the phase separation process was performed by solving the diffusion equation in the two dimensional square lattice. A modification of the coefficient of the free energy gradient term was proposed to avoid singularity in calculation. The time resolved concentration, structure factor, and autocorrelation functions were calculated and shown in the two dimensional images. The calculated patterns were compared to the results obtained from the optical microscopy and the small angle light scattering.Subjects--Topical Terms:

1018531
Engineering, Chemical.

Phase equilibrium and phase separation dynamics in polymer dispersed liquid crystals.
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100 1 $a Shen, Chungsea. $3 1927651
245 1 0 $a Phase equilibrium and phase separation dynamics in polymer dispersed liquid crystals.
300 $a 245 p.
500 $a Source: Dissertation Abstracts International, Volume: 56-04, Section: B, page: 2182.
500 $a Adviser: Thein Kyu.
502 $a Thesis (Ph.D.)--The University of Akron, 1995.
520 $a Thermodynamic phase equilibrium of a polymer dispersed liquid crystal (PDLC) consisting of monomeric liquid crystals and a polymer have been investigated theoretically and experimentally. The equilibrium limits of phase separation as well as phase transition of a PDLC system were calculated by taking into consideration the Flory-Huggins (FH) theory for the free energy of mixing of isotropic phases in conjunction with the Maier-Saupe (MS) theory for phase transition of a nematic liquid crystal. The effects of molecular weight and molecular weight distribution on the phase equilibrium of the polymer dispersed liquid crystal (PDLC) system were investigated. Time resolved light scattering and microscopy studies were undertaken to investigate the phase transition of a polymer dispersed liquid crystal. The simulation of the phase separation process was performed by solving the diffusion equation in the two dimensional square lattice. A modification of the coefficient of the free energy gradient term was proposed to avoid singularity in calculation. The time resolved concentration, structure factor, and autocorrelation functions were calculated and shown in the two dimensional images. The calculated patterns were compared to the results obtained from the optical microscopy and the small angle light scattering.
590 $a School code: 0003.
650 4 $a Engineering, Chemical. $3 1018531
650 4 $a Plastics Technology. $3 1023683
650 4 $a Physics, Optics. $3 1018756
690 $a 0542
690 $a 0795
690 $a 0752
710 2 0 $a The University of Akron. $3 1018399
773 0 $t Dissertation Abstracts International $g 56-04B.
790 1 0 $a Kyu, Thein, $e advisor
790 $a 0003
791 $a Ph.D.
792 $a 1995
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9528465