Polylactic acid
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Polylactic acid
 

NAMES AND IDENTIFIERS OF POLYMER

POLYMER CLASS Polyesters
COMMON NAMESPolylactic acid, Poly(L-lactide), Poly(D,L-lactide)
STRUCTURE BASED NAME Poly(2-hydroxypropionic acid)
ACRONYMS PLA
CAS # 33135-50-1
CurlySMILES C{-}(C)C(=O)O{n+}
 

IDENTIFIERS OF MONOMER(S)

CAS # 26100-51-6
COMMON NAMESLactic acid
SMILES OC(=O)C(O)C
Std. InChI 1S/C3H6O3/c1-2(4)3(5)6/h2,4H,1H3,(H,5,6)
Std. InChIKey JVTAAEKCZFNVCJ-UHFFFAOYSA-N
STRUCTURE
Lactic acid
 

Thermo-Physical Properties: Experimental / Literature Data

PROPERTYUNITVALUE / RANGEPREFERRED
Molar Volume VmmL mol-156.7 - 57.757.2
Density ρg mL-1 1.25 - 1.271.26
Solubility Parameter δMPa1/2 19.2 - 21.120.2
Molar Cohesive Energy EcohJ mol-1 21100 - 2520023300
Glass Transition Temperature TgK 326 - 337332
Molar Heat Capacity CpJ (mol K)-1~ 99
Entanglement Molecular Weight Meg mol-1 5700 - 144008700
Index of Refraction nnone 1.44 - 1.501.47
 

Thermo-Physical Properties: Calculated Data

PROPERTYUNITVALUE / RANGEPREFERRED
Molecular Weight of Repeat unitg mol-1 72.06
Van-der-Waals Volume VvWmL mol-1 35.64
Molar Volume VmmL mol-151.7 - 54.954.9
Density ρg mL-1 1.31 - 1.391.31
Solubility Parameter δMPa1/2 20.0 - 20.920.3
Molar Cohesive Energy Ecoh J mol-1 20800 - 24000 22600
Glass Transition Temperature TgK 285 - 342312
Molar Heat Capacity CpJ (mol K)-186 - 10093
Entanglement Molecular Weight Meg mol-1 3900 - 49004300
Index of Refraction n none 1.47 - 1.49 1.48

  Last updated: December 31, 2015

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