Typher Yom

(Advisor: Mark Losego)

Will propose a doctoral thesis entitled,

Understanding Precursor-Polymer Couples for Vapor Phase Infiltration

On

Monday, August 18, at 2:00 pm

Love Room 210

And

virtually via MS Teams

https://teams.microsoft.com/l/meetup-join/19%3ameeting_NTg0OTczODAtZjhlYy00ZTEwLTkwM2ItOTAxNzBmYWQ0YTgz%40thread.v2/0?context=%7b%22Tid%22%3a%22482198bb-ae7b-4b25-8b7a-6d7f32faa083%22%2c%22Oid%22%3a%220cd80a83-685c-4d53-9138-13e56774a9b6%22%7d

Meeting ID: 261 024 762 146 2

Password: Vj79kY39

Abstract

Vapor phase infiltration (VPI) is a process by which hybrid organic-inorganic materials can be produced by infiltrating polymers with vapor phase inorganic precursor. However, compared to atomic layer deposition (ALD), its parent process, VPI does not have a thorough list of available precursor-polymer combinations, nor are there standardized practices to test the success of these processes in the literature nor a good understanding of how to predict which precursor-polymer couples will work well for VPI. This work will fill in the gaps in information first by performing over 45 different precursor-polymer VPI combinations and assessing the degree to which these polymers are infiltrated.

            The second part of this thesis research will go into a deep dive of a few of these processes, investigating any apparent incongruencies within and between systems. Two systems will be studied: the first system is the infiltration of diethylzinc (DEZ), a zinc oxide precursor, in polymethylmethacrylate (PMMA), which was claimed to be unsuccessful in the literature. The second system to be studied will be the infiltration of titanium tetrachloride (TiCl4), a titanium oxide precursor, in poly-2-vinylpyridine (P2VP) and poly-4-vinylpyridine (P4VP) as well as DEZ in P2VP and P4VP, as the infiltration success varies between these two precursors. The greater goal of this proposal is to provide a resource which VPI researchers can rely on to further understand the fundamentals of VPI and predict the behavior of other precursor-polymer systems.

Committee:

Dr. Mark Losego - School of Materials Science and Engineering (advisor)

Dr. Antonio Facchetti - School of Materials Science and Engineering

Dr. Shucong Li - School of Materials Science and Engineering

Dr. Seung Soon Jang - School of Materials Science and Engineering

Dr. Ryan Lively – School of Chemical and Biomolecular Engineering