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Simulation studies of diblock-copoly...

Estridge, Carla E.

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Simulation studies of diblock-copolymer grafted nanoparticle assembly in solvent and polymer matrix.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Simulation studies of diblock-copolymer grafted nanoparticle assembly in solvent and polymer matrix./
作者:	Estridge, Carla E.
面頁冊數:	195 p.
附註:	Source: Dissertation Abstracts International, Volume: 76-10(E), Section: B.
Contained By:	Dissertation Abstracts International76-10B(E).
標題:	Physical chemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3704688
ISBN:	9781321772784

Simulation studies of diblock-copolymer grafted nanoparticle assembly in solvent and polymer matrix.
Estridge, Carla E.

Simulation studies of diblock-copolymer grafted nanoparticle assembly in solvent and polymer matrix. - 195 p.

Source: Dissertation Abstracts International, Volume: 76-10(E), Section: B.

Thesis (Ph.D.)--University of Colorado at Boulder, 2015.

Macroscopic properties of polymer nanocomposites are fundamentally linked to the morphology (or assembled structure) of its constituents. In order to design composites to have specific macroscopic properties it is important to be able to control the assembly of the constituents in the composite. In this thesis we use molecular simulations to study the molecular-level interactions and assembly of one class of polymer nanocomposites, namely diblock-copolymer grafted nanoparticles in solvent and in polymer matrix.

ISBN: 9781321772784Subjects--Topical Terms:

1981412
Physical chemistry.

Simulation studies of diblock-copolymer grafted nanoparticle assembly in solvent and polymer matrix.
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245 1 0 $a Simulation studies of diblock-copolymer grafted nanoparticle assembly in solvent and polymer matrix.
300 $a 195 p.
500 $a Source: Dissertation Abstracts International, Volume: 76-10(E), Section: B.
500 $a Advisers: Arthi Jayaraman; Robert Parson.
502 $a Thesis (Ph.D.)--University of Colorado at Boulder, 2015.
520 $a Macroscopic properties of polymer nanocomposites are fundamentally linked to the morphology (or assembled structure) of its constituents. In order to design composites to have specific macroscopic properties it is important to be able to control the assembly of the constituents in the composite. In this thesis we use molecular simulations to study the molecular-level interactions and assembly of one class of polymer nanocomposites, namely diblock-copolymer grafted nanoparticles in solvent and in polymer matrix.
520 $a First, we study how the molecular features of the diblock-copolymer grafts affect the assembly of grafted nanoparticles in a (implicit) small molecule solvent. Using coarse-grained molecular dynamics simulations we study the effects of graft length, particle size, solvent selectivity, and copolymer composition on the particle assembly. This knowledge informs experiments on what diblock copolymer grafted nanoparticles properties to synthesize to achieve a target assembled structure.
520 $a Second, we elucidate how the chemistry of a homopolymer matrix affects the graft and matrix polymer conformations and the interactions between diblock copolymer grafted particles in the homopolymer matrix. Using coarse-grained simulations and umbrella sampling technique we calculate the potential of mean force between two grafted particles within polymer matrix. We vary the chemistry of the homopolymer matrix and the copolymer grafts through systematic variations in the monomer interaction potentials. This gives insight into how the diblock copolymer grafted layer and the matrix environment influence the effective interactions between the particles in a polymer matrix.
520 $a Third, we investigate diblock copolymer grafted particles as compatibilizing agents in a polymer matrix consisting of an immiscible homopolymer blend. The phase separation of homopolymers within the blend leads to formation of domains and interfaces that weaken the composite materials' mechanical properties. There is a need optimal compatibilizers that stabilize these polymer interfaces in the blend, and as a result strengthen the composite material. Using simulations we compare the compatibilizing properties of diblock copolymer grafted particles to those of other compatibilizers, such as free diblock copolymers and Janus nanoparticles. Beyond their role as superior compatibilizers, we also find that diblock copolymer grafted nanoparticles provide control over the glass transition temperature of the polymer nanocomposite.
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650 4 $a Polymer chemistry. $3 3173488
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773 0 $t Dissertation Abstracts International $g 76-10B(E).
790 $a 0051
791 $a Ph.D.
792 $a 2015
793 $a English
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