東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Dynamic properties in miscible polym...

He, Yiyong.

FindBook

Google Book

Amazon

博客來

Dynamic properties in miscible polymer blends and copolymers.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Dynamic properties in miscible polymer blends and copolymers./
作者:	He, Yiyong.
面頁冊數:	336 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-08, Section: B, page: 4247.
Contained By:	Dissertation Abstracts International66-08B.
標題:	Chemistry, Polymer. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3186129
ISBN:	9780542275142

Dynamic properties in miscible polymer blends and copolymers.
He, Yiyong.

Dynamic properties in miscible polymer blends and copolymers. - 336 p.

Source: Dissertation Abstracts International, Volume: 66-08, Section: B, page: 4247.

Thesis (Ph.D.)--The University of Wisconsin - Madison, 2005.

We have investigated the component segmental and terminal dynamics in a variety of miscible polymer mixtures through a combination of different techniques. The unambiguous results, supplemented with molecular dynamics (MD) simulations and literature data, help us to understand the molecular mechanism of dynamic properties of miscible polymer mixtures and develop predictive models.

ISBN: 9780542275142Subjects--Topical Terms:

1018428
Chemistry, Polymer.

Dynamic properties in miscible polymer blends and copolymers.
LDR:03383nmm 2200313 4500 001 1826724
005 20061215124246.5
008 130610s2005 eng d
020 $a 9780542275142
035 $a (UnM)AAI3186129
035 $a AAI3186129
040 $a UnM $c UnM
100 1 $a He, Yiyong. $3 1915679
245 1 0 $a Dynamic properties in miscible polymer blends and copolymers.
300 $a 336 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-08, Section: B, page: 4247.
500 $a Supervisor: Mark D. Ediger.
502 $a Thesis (Ph.D.)--The University of Wisconsin - Madison, 2005.
520 $a We have investigated the component segmental and terminal dynamics in a variety of miscible polymer mixtures through a combination of different techniques. The unambiguous results, supplemented with molecular dynamics (MD) simulations and literature data, help us to understand the molecular mechanism of dynamic properties of miscible polymer mixtures and develop predictive models.
520 $a Distinct segmental dynamics were observed for the two components in all systems studied. The molecular origin of this local dynamic heterogeneity is a contribution of two factors: (1) Intrinsic mobility difference ---The two types of chains in a polymer mixture have different intrinsic mobility due to the difference in their molecular structure and intramolecular potentials; (2) Effective local concentration ---Each component in a polymer mixture effectively experiences its own local composition which is quite different than the bulk composition. In the framework of the Lodge/McLeish model, the enhanced local concentration is explained by self-concentration originating from chain connectivity of polymers. Our implementation of the Lodge/McLeish model incorporates both intrinsic mobility and self-concentration effects. It has been shown to account for most experimental results (including literature data) in a qualitative manner, and in several cases, it is able to provide quantitative descriptions.
520 $a Terminal dynamics in miscible polymer mixtures show more complexity than the segmental dynamics. For both components in polyisoprene/poly(vinyl ethylene) (PI/PVE) blends, the terminal and segmental dynamics exhibit equivalent dependences on temperature and composition. In polybutadiene/poly(vinyl ethylene) (PB/PVE) blends, distinct dynamics were also observed at the terminal level. In contrast to PI/PVE, the terminal dynamics have a somewhat stronger composition dependence than the segmental dynamics in PB/PVE. For either polyisoprene/polystyrene (PI/PS) blends or styrene-isoprene tetrablock (SISI) copolymers, the terminal dynamics of the two components in a given mixture are essentially identical, even though their segmental dynamics are different by orders of magnitude. Some tentative explanations have been proposed for these observations.
520 $a MD simulations were performed by collaborators on PS homopolymer melts. MD simulations reproduce both the shape of the P 2(t) orientation auto-correlation function and its temperature dependence.
590 $a School code: 0262.
650 4 $a Chemistry, Polymer. $3 1018428
650 4 $a Chemistry, Physical. $3 560527
690 $a 0495
690 $a 0494
710 2 0 $a The University of Wisconsin - Madison. $3 626640
773 0 $t Dissertation Abstracts International $g 66-08B.
790 1 0 $a Ediger, Mark D., $e advisor
790 $a 0262
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3186129