Alexandria Digital Research Library

Computational Design and Morphology Engineering of Multiblock Polymer Films

Author:
Paradiso, Sean Phillip
Degree Grantor:
University of California, Santa Barbara. Chemical Engineering
Degree Supervisor:
Glenn H. Fredrickson
Place of Publication:
[Santa Barbara, Calif.]
Publisher:
University of California, Santa Barbara
Creation Date:
2015
Issued Date:
2015
Topics:
Materials science, Applied mathematics, and Polymer chemistry
Keywords:
Polymer dynamics
Self-consistent field theory
Inverse design
Global optimization
Self assembly
SCFT
Genres:
Online resources and Dissertations, Academic
Dissertation:
Ph.D.--University of California, Santa Barbara, 2015
Description:

In recent years, block copolymers have grown in popularity as a platform for building functional, nanostructured materials. The innate ability of inhomogeneous block copolymers to self assemble into a broad array of highly ordered mesostructures has generated interest for applications in advanced membranes, electronic materials, and nanostructured resist masks for lithography, among others. As the design requirements of these applications mature and more ambitious projects are imagined, the ability to intuitively design complex formulations of multiblock polymers will quickly saturate. Here, we study multiblock polymer self assembly to better understand, and therefore enhance our ability to engineer, the process to producing nanostructured polymer materials.

The primary drive of our investigation is to understand pattern selection during solvent evaporation, a method for producing block copolymer materials that is gaining popularity due to the control it offers over the self assembly process. To this end, we describe a field-based dynamics method for simulating the microphase separation process during solvent evaporation and offer insights into the physical parameters that appear to govern the process.

In the final chapter, we zoom out and approach the general problem of multiblock polymer design as a global optimization problem. The combinatoric explosion of choices for multiblock polymer architectures (arrangement, chemistry, connectivity) and blends threatens to curtail future development if robust automation procedures are not identified to aid in the molecular discovery process. We describe a swarm intelligence platform here that offers an efficient and highly flexible interface to screening on any computable equilibrium property of interest, using morphology as a motivating example.

Physical Description:
1 online resource (132 pages)
Format:
Text
Collection(s):
UCSB electronic theses and dissertations
ARK:
ark:/48907/f3w37vv3
ISBN:
9781339471921
Catalog System Number:
990046180040203776
Rights:
Inc.icon only.dark In Copyright
Copyright Holder:
Sean Paradiso
File Description
Access: Public access
Paradiso_ucsb_0035D_12816.pdf pdf (Portable Document Format)