
17: LIQUID CRYSTAL POLYMERS 383
4-Aminophenol
OHHO
OH
HOOC
2-Hydroxy-6-naphthoic acid
COOHHO
4-Hydroxybenzoic acid
COOH
HOOC
2,6-Naphthalenedicarboxylic acid
OH
HO
2,6-Dihydroxynaphthalene
OHHO
Hydroquinone 4,4′-Biphenol
HO OH
COOHHOOC
Terephthalic acid
COOH
HOOC
Isophthalic acid
CHO C COOH
4-Hydroxycinnamic acid
HO
CH
3
CH
3
CH
3
COOH
Lithocholic acid
Figure 17.2 Monomers used for liquid crystal
polymers.
O(CH
2
)
4
OOCHC CH
2
NC
COO
COO
OCO
R
R
R=
O(CH
2
)
5
OOCHC CH
2
Figure 17.3 Photopolymer izable liquid crystalline
monomers [33].
moieties of different size which disturbs intermolecu-
lar aggregation. The introduction of naphthoic groups
introduces kinks in the backbone which leads to a loss