Synthesis, characterization, and evaluation of a heat stabilizing siloxane

<p>Siloxanes, renowned for their heat resistance and release properties, are prone to oxidize above 200°C. The goal herein is to increase siloxane bath life used in fuser roll applications at temperatures above 200°C, yielding faster production, less waste, and cost savings by keeping the bath viscosity stable through prevention of thermal degradation.</p> <p>The methods detailed herein react a hydrosiloxane with an amino functional alcohol (4-(phenylamino)-phenol). The alcoholysis (or dehydrogenative coupling) moves forward with the removal of hydrogen and formation of the desired product (Scheme 1). Reactions were conducted on both NMR scale and lab scale.</p> <p>The results of the synthesis were characterized via NMR spectroscopy and evaluated via heat age studies. The material, confirmed via ²⁹Si NMR, was proven effective through heat age testing in both fluid and elastomer formulations.</p>

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Open Access Thesis

Discipline thesis:degree_discipline

Chemistry

Year dc:date.available

2012

Author dc:creator

• Kennard, Joel D.

Contributors dc:contributor

• Donald Snyder, PhD, Chair
• Cory Emal, PhD
• Gregg Wilmes, PhD

• alcoholysis
• hydrogen
• heat
• siloxanes
• Chemistry

Repository record dc:identifier

https://commons.emich.edu/theses/407

OAI identifier oai:identifier

oai:commons.emich.edu:theses-1776