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http://dx.doi.org/10.12772/TSE.2015.52.143

Synthesis of High Molecular Weight Poly(m-phenylene terephthalamide) in NMP/CaCl2 Solvents  

Lee, Woo-Seung (Department of Advanced Organic Materials, Yeungnam University)
Yim, Jong-Ha (Department of Advanced Organic Materials, Yeungnam University)
Ahn, Ji-Hoon (Department of Advanced Organic Materials, Yeungnam University)
Son, Tae-Won (Department of Chemical Engineering, Yeungnam University)
Publication Information
Textile Science and Engineering / v.52, no.3, 2015 , pp. 143-150 More about this Journal
Abstract
A new solvent was developed for the synthesis of a high-molecular-weight aramid polymer, PMTA, which is a low-weight form of poly(m-phenylene terephthalamide). The condensation method was optimized to obtain the best-grade polymer. HCl liberated from the optimized polymer was neutralized with CaO and the polymer was characterized. A series of neutralization experiments were performed to determine the relationships between the viscosity properties and the experimental conditions. The PMTA properties were characterized by instrumental analysis.
Keywords
aramid; PMTA; high molecular weight; polymerization; neutralization;
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