東華大學圖書館 |

語系: 繁體中文

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Intermolecular interactions and solv...

Gu, Zhiyong.

Linked to FindBook

Google Book

Amazon

博客來

Intermolecular interactions and solvent diffusion in ordered nanostructures formed by self-assembly of block copolymers.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Intermolecular interactions and solvent diffusion in ordered nanostructures formed by self-assembly of block copolymers./
Author:	Gu, Zhiyong.
Description:	285 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-03, Section: B, page: 1432.
Contained By:	Dissertation Abstracts International65-03B.
Subject:	Engineering, Chemical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3125707
ISBN:	0496729969

Intermolecular interactions and solvent diffusion in ordered nanostructures formed by self-assembly of block copolymers.
Gu, Zhiyong.

Intermolecular interactions and solvent diffusion in ordered nanostructures formed by self-assembly of block copolymers. - 285 p.

Source: Dissertation Abstracts International, Volume: 65-03, Section: B, page: 1432.

Thesis (Ph.D.)--State University of New York at Buffalo, 2004.

Hydrogels formed by Poloxamer poly(ethylene oxide)-poly(propylene oxide) (PEO-PPO) block copolymers find various pharmaceutical and biomedical applications. A variety of ordered structures can be exhibited by Poloxamer block copolymers in selective solvents such as water, for example, micellar cubic phase, hexagonal phase, lamellar phase, etc. We are interested in the thermodynamic and transport properties of water in such hydrogels that have an ordered (lyotropic liquid crystalline) structure. We have investigated the time evolution of water loss from Poloxamer gel films under a driving force of known water vapor pressure in the air in contact with the film. The experimental data on the drying process have been fitted to the diffusion equation for water in the film, under a boundary condition that includes the water concentration in the gel at infinite time; the water diffusion coefficient and other parameters have thus been obtained. The water chemical potential and osmotic pressure in the gel have been obtained from osmotic stress measurements. The osmotic pressure (force), together with data on the corresponding lyotropic liquid crystal spacing (distance) that we obtained from Small Angle X-Ray Scattering (SAXS) measurements, have been analyzed to provide information on the prevailing intermolecular (inter-assembly) forces in the gel. The forces in the gel reveal interactions that occur at two levels, that of the PEO coil and that of the PEO segment.

ISBN: 0496729969Subjects--Topical Terms:

1018531
Engineering, Chemical.

Intermolecular interactions and solvent diffusion in ordered nanostructures formed by self-assembly of block copolymers.
LDR:02468nmm 2200289 4500 001 1847395
005 20051108094520.5
008 130614s2004 eng d
020 $a 0496729969
035 $a (UnM)AAI3125707
035 $a AAI3125707
040 $a UnM $c UnM
100 1 $a Gu, Zhiyong. $3 1935444
245 1 0 $a Intermolecular interactions and solvent diffusion in ordered nanostructures formed by self-assembly of block copolymers.
300 $a 285 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-03, Section: B, page: 1432.
500 $a Major Professor: Paschalis Alexandridis.
502 $a Thesis (Ph.D.)--State University of New York at Buffalo, 2004.
520 $a Hydrogels formed by Poloxamer poly(ethylene oxide)-poly(propylene oxide) (PEO-PPO) block copolymers find various pharmaceutical and biomedical applications. A variety of ordered structures can be exhibited by Poloxamer block copolymers in selective solvents such as water, for example, micellar cubic phase, hexagonal phase, lamellar phase, etc. We are interested in the thermodynamic and transport properties of water in such hydrogels that have an ordered (lyotropic liquid crystalline) structure. We have investigated the time evolution of water loss from Poloxamer gel films under a driving force of known water vapor pressure in the air in contact with the film. The experimental data on the drying process have been fitted to the diffusion equation for water in the film, under a boundary condition that includes the water concentration in the gel at infinite time; the water diffusion coefficient and other parameters have thus been obtained. The water chemical potential and osmotic pressure in the gel have been obtained from osmotic stress measurements. The osmotic pressure (force), together with data on the corresponding lyotropic liquid crystal spacing (distance) that we obtained from Small Angle X-Ray Scattering (SAXS) measurements, have been analyzed to provide information on the prevailing intermolecular (inter-assembly) forces in the gel. The forces in the gel reveal interactions that occur at two levels, that of the PEO coil and that of the PEO segment.
590 $a School code: 0656.
650 4 $a Engineering, Chemical. $3 1018531
650 4 $a Chemistry, Polymer. $3 1018428
650 4 $a Engineering, Materials Science. $3 1017759
690 $a 0542
690 $a 0495
690 $a 0794
710 2 0 $a State University of New York at Buffalo. $3 1017814
773 0 $t Dissertation Abstracts International $g 65-03B.
790 1 0 $a Alexandridis, Paschalis, $e advisor
790 $a 0656
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3125707