naturally occurring polymers that are found in all living
organisms. The use of biopolymers has less adverse impact
on our environment compared to using fossil fuel based
commodity plastics [4]. During the last two decades,
considerable attempts have been made to develop biodegradable
polymers and composites [3]. Aliphatic polyesters
such as polylactic acid (PLA), polycaprolactone (PCL), poly
(3-hydroxybutyrate) (PHB) and polyglycolic acid (PGA)
represent important biodegradable polymers, which are
now finding commercial applications in combination with
bio-based materials [5]. PLA, is a linear aliphatic thermoplastic
polyester, produced from renewable resources,
which has gained much attention in both research and
applications [6,7]. This polymer is produced either by ring