Evaluation of the performance of azobenzene liquid-crystal shape memory polyurethanes with photo-thermo-synergy responses
This study is aimed at investigating the photo-response performance of a polymeric material using a series of azobenzene liquid-crystal shape memory polyurethanes ( DB-SMPn ) with azobenzene-4,4′-dicarboxylic acid (ADA), N , N -bis(2-hydroxyethyl)isonicotinamine (BINA), and hexamethylene diisocyanat...
Saved in:
Published in | New journal of chemistry Vol. 46; no. 26; pp. 1288 - 12813 |
---|---|
Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Cambridge
Royal Society of Chemistry
05.07.2022
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | This study is aimed at investigating the photo-response performance of a polymeric material using a series of azobenzene liquid-crystal shape memory polyurethanes (
DB-SMPn
) with azobenzene-4,4′-dicarboxylic acid (ADA),
N
,
N
-bis(2-hydroxyethyl)isonicotinamine (BINA), and hexamethylene diisocyanate (HDI) as the main raw materials. The mole ratios of
BINA
and
ADA
were varied during the preparation of the different hard segment contents of
DB-SMPn
. The structure, thermal performance, and liquid-crystal properties of
DB-SMPn
were investigated, and the thermo- and photo-response shape memory performances of
DB-SMPn
were directly characterized
via
heating and ultraviolet light. The results indicated that the polymer exhibited excellent triple-shape memory and unique photo-thermo-synergy response shape memory characteristics. These characteristics provided a theoretical basis for the azobenzene liquid-crystal shape memory polyurethane materials, which are expected to have several new potential applications in robotics and smart devices.
Azobenzene liquid-crystal shape memory polyurethanes with photo-thermo-synergy responses. |
---|---|
ISSN: | 1144-0546 1369-9261 |
DOI: | 10.1039/d2nj02062a |