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Polylactide (PLA): Complete Guide to Accelerate your 'Green' Approach

Polylactide (PLA): Complete Guide on Bio-based & Biodegradable PolymerRapidly growing concerns related to environmental and health safety, limiting dependence on petrochemical raw materials, reducing carbon footprint ... are among the few factors driving inclination towards use of biopolymers.

There exist several biopolymers today and thanks to the excellent degradation behavior and versatility of PLA:

   » It is now widely used in packaging sector right from a niche product in organic trade to premium packaging for branded goods
   » High-performance grades, that are an excellent replacement for PS, PP, and ABS, are gaining traction in more demanding applications


What makes PLA a very versatile polymer and material of choice in several applications today? Let’s check out in detail...

Properties of Various PLA Grades


We have already discussed several Polylactide properties in the earlier section. There are other significant Polylactide properties that can be of importance before selecting it for a typical application. Check out a detailed view of Polylactide properties and their related attributes.

  Polylactide PLA Melt Spinning PLA-Heat Seal Layer PLA High heat films Injection molded Polylactide Spunbond Polylactide
 Property Values
 Physical Properties
 Density g/cm3 1.23 - 1.25 1.23 - 1.25 1.23 - 1.25 1.23 - 1.25 1.24 - 1.26 1.23 - 1.25
 Glass  Transition  Temperature 55 - 65 °C 52 - 58°C 55 - 60°C 55 - 60 °C
 Sustainability
 Biobased  Content   100 % 100 % 100 % 100 % 100 %
 Biodegradable   Yes Yes Yes Yes Yes
 Mechanical Properties
 Elongation at  Break - 7 %     179 - 181 % - 3 %  
 Strength at  Break (Tensile) 52 - 54 MPa     102.2 - 104.2 MPa    
 Strength at  Yield (Tensile) 59 - 61 MPa       48 - 52 MPa  
 Young  Modulus 3.4 - 3.6 GPa     3.3 - 3.5 GPa 3.5 - 3.6 GPa  
 Flexibility  (Flexural  Modulus)         3.8 GPa
 
 Stiffness  (Flexural  Modulus)          
 Dimensional Stability
 Coefficient of  Linear
 Thermal  Expansion
        8.5 10-5 /°C  
 Shrinkage         0.3 - 0.5 %  
 Service Temperature
 HDT @0.46  Mpa (67 psi)         53 - 56 °C  
 Optical Properties
 Gloss     89 - 91 % 89 - 91 %    
 Haze     2 % - 2.2 %    
 Others
 Thermal  Insulation
 (Thermal  Conductivity)
        0.11 - 0.195 W/m.K  

Commercially Available Polylactide Bioplastic Grades





This plastic database is available to all, free of charge. You can filter down your options by property (mechanical, electrical…), applications, conversion mode and many more dimensions.



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