We have studied the nonisothermal and isothermal crystallization kinetics of an aromatic thermotropic liquid crystalline polyimide synthesized from 1,2,4,5-benzenetetracarboxylic dianhydride (PMDA) and 1,3-bis[4-(4-aminophenoxy) cumyl] benzene (BACB) by means of differential scanning calorimetry (DS
Thermotropic Liquid-Crystalline Polymer Derived from Natural Cinnamoyl Biomonomers
✍ Scribed by Tatsuo Kaneko; Michiya Matsusaki; Tran Thi Hang; Mitsuru Akashi
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 252 KB
- Volume
- 25
- Category
- Article
- ISSN
- 1022-1336
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✦ Synopsis
Abstract
Summary: The compound 4‐hydroxycinnamic acid (4HCA), a natural biomonomer, is polymerized by melt polycondensation to yield a liquid‐crystalline biopolymer (P4HCA) with UV reactivity. L929 cells were successfully incubated on P4HCA films at 37 °C.
Structure of poly(4‐hydroxycinnamic acid) (P4HCA) and its crossed‐polarizing optical micrograph in the nematic state. Inset image: optical micrograph of L929 mouse fibroblasts adhered on P4HCA film after 24 h incubation at 37 °C.
imageStructure of poly(4‐hydroxycinnamic acid) (P4HCA) and its crossed‐polarizing optical micrograph in the nematic state. Inset image: optical micrograph of L929 mouse fibroblasts adhered on P4HCA film after 24 h incubation at 37 °C.
📜 SIMILAR VOLUMES
Three series of thermotropic liquid crystalline polycarbonates and poly(ester-carbonate)s were prepared by solution polycondensation of 4,4Ј-biphenyldiol (BP), 4Ј-hydroxybiphenyl-4-hydroxybenzoate (HHB), or 4-hydroxyphenyl-4Љ-hydroxybiphenyl-4Ј-carboxylate (HHBP), as mesogenic unit, with 1,10-bis(p-
Diacid Monomer. The diacid monomer with the nonamethylene spacer was prepared using the method reported in a previous a r t i ~l e . ~ ## Polymerization Polyester 1 was obtained by melt-polycondensation of the corresponding monomers, the dicarboxylic acid, and the hydroquinone diacetate using zin