LA) is a biodegradable and biocompatible thermoplastics, and can be produced from renewable resources. Due to
its high mechanical properties, thermal plasticity and commercial
availability, PLA has been used in the biomedical, pharmaceutical
applications, agricultural areas, etc. However, PLA displays some
unsatisfactory characteristics such as brittleness, low glass transition temperature (Tg) and poor thermal stability, which significantly
limit its expansion into new commercial application areas. Blending
with plasticizers is the most common and efficient method to increase the toughness of polymers. Many plasticizers (such as either
glycerol[1,2]and its ester derivatives[3], citrate derivatives[4]and
so on) have been demonstrated to be available for improving the
brittleness of PLA while deteriorating seriously theTgand modulus
of PLA. To modulate the toughness and stiffness of PLA, many works
have been performed on blending PLA with various miscible or
immiscible polymers. Hassan et al.[5]prepared a novel linear low
density polyethylene (LLDPE) toughened PLA nanocomposite. Iida’s
group[6]demonstrated that the tensile strain was increased considerably using a reactive processing at 20 wt.% poly(e-caprolactone)
(PCL). Another flexible and biodegradable poly(butylene succinate)
(PBS) was also used to improve the elongation at break of PLA even
LA) is a biodegradable and biocompatible thermoplastics, and can be produced from renewable resources. Due to
its high mechanical properties, thermal plasticity and commercial
availability, PLA has been used in the biomedical, pharmaceutical
applications, agricultural areas, etc. However, PLA displays some
unsatisfactory characteristics such as brittleness, low glass transition temperature (Tg) and poor thermal stability, which significantly
limit its expansion into new commercial application areas. Blending
with plasticizers is the most common and efficient method to increase the toughness of polymers. Many plasticizers (such as either
glycerol[1,2]and its ester derivatives[3], citrate derivatives[4]and
so on) have been demonstrated to be available for improving the
brittleness of PLA while deteriorating seriously theTgand modulus
of PLA. To modulate the toughness and stiffness of PLA, many works
have been performed on blending PLA with various miscible or
immiscible polymers. Hassan et al.[5]prepared a novel linear low
density polyethylene (LLDPE) toughened PLA nanocomposite. Iida’s
group[6]demonstrated that the tensile strain was increased considerably using a reactive processing at 20 wt.% poly(e-caprolactone)
(PCL). Another flexible and biodegradable poly(butylene succinate)
(PBS) was also used to improve the elongation at break of PLA even
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