Kevlar
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Kevlar - Polyaramide
 

NAMES AND IDENTIFIERS OF POLYMER

POLYMER CLASS Polyamide
COMMON NAMESKevlar, Twaron, Polyaramide, Aramide, Poly(p-phenylene terephthalamide), Poly[(p-phenylenediamine)-alt-(terephthalic acid)]
STRUCTURE BASED NAME Poly(imino-1,4-phenyleneiminoterephthaloyl)
ACRONYMS PPTA
CAS # 24938-64-5
CurlySMILES N{-}c1ccc(cc1)NC(=O)c1ccc(cc1)C{n+}(=O)
 

IDENTIFIERS OF MONOMER(S)

CAS # 106-50-3.100-20-9
COMMON NAMESp-Phenylenediamine & Terephthalic acid
SMILES Nc1ccc(cc1)N.ClC(=O)c1ccc(cc1)C(=O)Cl
Std. InChI 1S/C6H8N2/c7-5-1-2-6(8)4-3-5/h1-4H,7-8H2.1S/C8H4Cl2O2/c9-7(11)5-1-2-6(4-3-5)8(10)12/h1-4H
Std. InChIKey CBCKQZAAMUWICA-UHFFFAOYSA-N.LXEJRKJRKIFVNY-UHFFFAOYSA-N
STRUCTURE
Kevlar
 

Thermo-Physical Properties: Experimental / Literature Data

PROPERTYUNITVALUE / RANGEPREFERRED
Molar Volume VmmL mol-1 164.3 - 165.6a> 165.6
Density ρg mL-1 1.44 - 1.45a< 1.44
Solubility Parameter δMPa1/2 23.0 - 29.026.0
Molar Cohesive Energy EcohJ mol-1 98600 - 156800127700
Glass Transition Temperature TgK 580 - 620600
Molar Heat Capacity CpJ (mol K)-1
Entanglement Molecular Weight Me g mol-1
Index of Refraction nnone
aKevlar and Twaron Fibers
 

Thermo-Physical Properties: Calculated Data

PROPERTYUNITVALUE / RANGEPREFERRED
Molecular Weight of Repeat unitg mol-1 238.25
Van-der-Waals Volume VvWmL mol-1 126.01
Molar Volume VmmL mol-1180.8 - 193.6186.5
Density ρg mL-1 1.23 - 1.321.28
Solubility Parameter δMPa1/2 25.8 - 30.128.6
Molar Cohesive Energy EcohJ mol-1 128700 - 167300152800
Glass Transition Temperature TgK 588 - 601
677
595
Molar Heat Capacity CpJ (mol K)-1249 - 275257
Entanglement Molecular Weight Meg mol-11900 - 38002900
Index of Refraction nnone1.60 - 1.761.65

  Last updated: January 8, 2016

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