Table 1.

Compositions, melting temperatures, and average molar masses of tested polymers

PolymeraDiolAromatic compound (mol%) Aliphatic compound(s) (mol%)Tm (°C)bMw (g/mol)c
BTA 40:601,4-ButanediolTerephthalic acid (40)Adipic acid (60)9947,600
BTA 60:401,4-ButanediolTerephthalic acid (60)Adipic acid (40)14745,000
SP3131,3-PropanediolBrassylic acid7241,500
Bayer Tir 18741,4-ButanediolAdipic acid (40), caprolactam (60)125NDd
PHB3-Hydroxybutyrate175>800,000
Bionolle1,4-ButanediolSuccinic acid11366,000
  • a Polymer sources: BTA 40:60 and BTA 60:40, Hüls AG, Marl, Germany; SP313, GBF, Braunschweig, Germany; Bayer Tir 1874, Bayer AG, Leverkusen, Germany; PHB, ICI, Billingham, United Kingdom; Bionolle, Showa Highpolymer, Tokyo, Japan.

  • b Tm , melting temperature.

  • c Mw , weight average molar mass (determined by gel permeation chromatography, based on polystyrene calibration).

  • d ND, not determined.