Stability Studies On Polymer Dispersed Liquid Crystal Films

A. M. Lackner; E. Ramos; J. D. Margerum

doi:10.1117/12.976428

25 July 1989 Stability Studies On Polymer Dispersed Liquid Crystal Films

A. M. Lackner, E. Ramos, J. D. Margerum

Proceedings Volume 1080, Liquid Crystal Chemistry, Physics, and Applications; (1989) https://doi.org/10.1117/12.976428
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

Stability factors were studied for polymer dispersed liquid crystal (PDLC) films which had been formed by ultraviolet (UV) initiated photopolymerization and liquid crystal phase separation. These stability studies emphasized long term exposures to high intensity light as a function of UV protection filters, and to high humidity (95% relative humidity (R.H.)) at an elevated temperature of 70Â°C. Various liquid crystal compositions were evaluated in PDLC films formed between conductive glass electrodes. The UWVIS exposure lifetime depended strongly on the wavelength cutoff of the protection filters. With coatings which had a 1% T cutoff at 394 nm, lifetimes greater than 2,200 h were obtained in a 1.1 kW Heraeus Suntest exposure system. Samples also showed greater than 1,000 h of stability, without degradation of properties, in the 95% R.H./70Â°C lifetime test.

Citation Download Citation

A. M. Lackner, E. Ramos, and J. D. Margerum "Stability Studies On Polymer Dispersed Liquid Crystal Films", Proc. SPIE 1080, Liquid Crystal Chemistry, Physics, and Applications, (25 July 1989); https://doi.org/10.1117/12.976428

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available