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Title: Polymerization under magnetic field (Part 7)-Synthesis—and characterization of a liquid crystal polymer
Authors: Bag, Dibyendu S
Mandal, Rabindranath
Maiti, Sukumar
Issue Date: Mar-1998
Publisher: NISCAIR-CSIR, India
Abstract: A lyotropic liquid crystal (LC) poly (amide hydrazide) was synthesized from a diamine, N,N'bis(4-aminobenzoyl) hydrazine (BABH) and terephthaloyl chloride (TC) in presence and absence of magnetic field (MF) of 4 kg. The polymer prepared with and without MF was characterized by viscosity and density measurements, IR spectroscopy, X-ray diffractometry, and TGA and DSC analysis. The polymer prepared under MF was of higher inherent viscosity. The molecular weight (MW) of the polymer determined by IR spectroscopy was also higher when prepared under MF. The polymer prepared under MF was more thermostable than that obtained without MF.
Page(s): 81-86
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.05(2) [March 1998]

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