ISSN

0974-4150 (Online)
0974-4169 (Print)


Author(s): S. Vasanthi, J. Arul Moli, D. Roop Singh

Email(s): roopsingh@hotmail.com

DOI: Not Available

Address: S. Vasanthi, J. Arul Moli and D. Roop Singh*
PG and Research Department of Chemistry, Presidency College, Chennai 600 005, Tamil Nadu, India
*Corresponding Author

Published In:   Volume - 4,      Issue - 8,     Year - 2011


ABSTRACT:
A new series of photocrosslinkable thermotropic liquid crystalline polyesters were synthesized by polycondensation with diphenylchlorophosphate, employing three dicarboxylic acids namely terephthalic acid, isophthalic acid and 4,4?-oxybis(benzoic acid). Four different arylidene mesogenic diols and 2-hydroxyethyl-4-hydroxybenzoate were used as comonomers. The structural features were investigated by viscosity measurements, FT-IR, 1H and 13C NMR spectral studies. The thermal phase transitions and thermotropic liquid crystalline behaviour of these polyesters were studied by differential scanning calorimetry and hot stage optical polarized microscopy. The polyesters exhibited nematic or grainy texture on melting. The photocrosslinkability of the polyesters were established by scanning electron microscopy coupled with UV irradiation/UV spectroscopy. X-ray diffraction studies showed that 4-hydroxy(3-methoxybenzylidene) based polyesters have lesser degree of crystallinity than 4-hydroxy(benzylidene) based polyesters.


Cite this article:
S. Vasanthi, J. Arul Moli, D. Roop Singh. Synthesis and Characterization of Certain Photocrosslinkablethermotropic Liquid Crystalline Random Copolyesters Containing Arylidene Moiety in the Main Chain. Asian J. Research Chem. 4(8): August, 2011; Page 1343-1349.


Recomonded Articles:

Author(s): Jeevan Dontulwar, Manjiri Nagmote, Rajesh Singru

DOI: 10.5958/0974-4150.2017.00139.0         Access: Open Access Read More

Author(s): J. Margaret Marie, S. Santhi, R. Puvanakrishnan, R. Nanthini

DOI:         Access: Open Access Read More

Author(s): Indira R., Harihara Priya G., Tamizharuvi T., Jaisankar V.

DOI:         Access: Open Access Read More

Author(s): Tamizharuvi T, Indira R, Jaisankar V

DOI:         Access: Open Access Read More

Author(s): T. Sivaramakrishnan, G. Annamalai, G. Elango

DOI: 10.5958/0974-4150.2020.00021.8         Access: Closed Access Read More

Asian Journal of Research in Chemistry (AJRC) is an international, peer-reviewed journal devoted to pure and applied chemistry..... Read more >>>

RNI: Not Available                     
DOI: 10.5958/0974-4150 

Popular Articles


Recent Articles




Tags