Poly(lactic acid) (PLA) Based Tear Resistant and Biodegradable Flexible Films by Blown Film Extrusion

Poly(lactic acid) (PLA) was melt mixed in a laboratory extruder with poly(butylene adipate-co-terephthalate) (PBAT) and poly(butylene succinate) (PBS) in the presence of polypropylene glycol di glycidyl ether (EJ400) that acted as both plasticizer and compatibilizer. The process was then scaled up in a semi-industrial extruder preparing pellets having different content of a nucleating agent (LAK). All of the formulations could be processed by blowing extrusion and the obtained films showed mechanical properties dependent on the LAK content. In particular the tearing strength showed a maximum like trend in the investigated composition range. The films prepared with both kinds of blends showed a tensile strength in the range 12–24 MPa, an elongation at break in the range 150–260% and a significant crystallinity.

[1]  Q. Lin,et al.  In situ compatibilization of polylactide/thermoplastic polyester elastomer blends using a multifunctional epoxide compound as a processing agent , 2016 .

[2]  Simona Bronco,et al.  Thermal degradation of poly(lactic acid) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) and their blends upon melt processing , 2009 .

[3]  S. Chirachanchai,et al.  Random poly(butylene succinate-co-lactic acid) as a multi-functional additive for miscibility, toughness, and clarity of PLA/PBS blends , 2016 .

[4]  Chul B. Park,et al.  Poly(lactic acid) crystallization , 2012 .

[5]  T. Masuko,et al.  Crystallization behaviour of poly(l-lactide) , 1998 .

[6]  Andrea Lazzeri,et al.  Effect of nucleating agents on crystallinity and properties of poly (lactic acid) (PLA) , 2017 .

[7]  P. Cinelli,et al.  Composition dependence of the synergistic effect of nucleating agent and plasticizer in poly(lactic acid): A Mixture Design study , 2016 .

[8]  Sati N. Bhattacharya,et al.  Compatibility of biodegradable poly (lactic acid) (PLA) and poly (butylene succinate) (PBS) blends for packaging application , 2007 .

[9]  C. Migliaresi,et al.  The effect of thermal history on the crystallinity of different molecular weight PLLA biodegradable polymers , 1991 .

[10]  N. L. Thomas,et al.  Talc as a nucleating agent and reinforcing filler in poly(lactic acid) composites , 2014 .

[11]  V. Vittoria,et al.  Potential perspectives of bio-nanocomposites for food packaging applications , 2007 .

[12]  Jianguo Mi,et al.  Crystallization-induced microcellular foaming of poly (lactic acid) with high volume expansion ratio , 2017 .

[13]  F. Ciardelli,et al.  Poly(lactic acid) properties as a consequence of poly(butylene adipate-co-terephthalate) blending and acetyl tributyl citrate plasticization , 2008 .

[14]  Valentina Siracusa,et al.  Biodegradable polymers for food packaging: a review , 2008 .

[15]  Susan Selke,et al.  An overview of polylactides as packaging materials. , 2004, Macromolecular bioscience.

[16]  M. M. Ueki,et al.  Influence of chain extender on mechanical, thermal and morphological properties of blown films of PLA/PBAT blends , 2015 .

[17]  Sabrina Bianchi,et al.  Chain extension and branching of poly(ethylene terephthalate) (PET) with di- and multifunctional epoxy or isocyanate additives: An experimental and modelling study , 2012 .

[18]  S. Chirachanchai,et al.  Isotropically small crystalline lamellae induced by high biaxial-stretching rate as a key microstructure for super-tough polylactide film , 2015 .

[19]  Simona Bronco,et al.  Compatible blends of biorelated polyesters through catalytic transesterification in the melt , 2011 .

[20]  Maria Beatrice Coltelli,et al.  Biodegradable and Compostable PLA-based formulations to replace plastic disposable commodities , 2007 .

[21]  P.F.H. Harmsen,et al.  Green building blocks for biobased plastics: biobased processes and market development , 2013 .

[22]  E. Pollet,et al.  Tailoring the Structure, Morphology, and Crystallization of Isodimorphic Poly(butylene succinate-ran-butylene adipate) Random Copolymers by Changing Composition and Thermal History , 2017 .

[23]  A. Maazouz,et al.  Improvement of blown film extrusion of poly(Lactic Acid): Structure–Processing–Properties relationships , 2014 .

[24]  T. Jin,et al.  Biodegradable polylactic acid polymer with nisin for use in antimicrobial food packaging. , 2008, Journal of food science.

[25]  M. Yamaguchi,et al.  Structure and Properties for Biomass-Based Polyester Blends of PLA and PBS , 2008 .

[26]  A. Lazzeri,et al.  Physico-Mechanical Properties of Biodegradable Rubber Toughened Polymers , 2011 .

[27]  A. Maazouz,et al.  Improvement of thermal stability, rheological and mechanical properties of PLA, PBAT and their blends by reactive extrusion with functionalized epoxy , 2012 .

[28]  J. Bautista,et al.  Preparation of crayfish chitin by in situ lactic acid production , 2001 .

[29]  S. Desobry,et al.  Poly-Lactic Acid: Production, Applications, Nanocomposites, and Release Studies. , 2010, Comprehensive reviews in food science and food safety.

[30]  S. Kabasci,et al.  Succinic Acid: A New Platform Chemical for Biobased Polymers from Renewable Resources , 2008 .

[31]  J. Bogaert,et al.  Poly(lactic acids): a potential solution to plastic waste dilemma , 2000 .

[32]  A. Lazzeri,et al.  Synergistic Effects of Nucleating Agents and Plasticizers on the Crystallization Behavior of Poly(lactic acid) , 2015, Molecules.

[33]  Chong Lu,et al.  Improving transparency of incompatible polymer blends by reactive compatibilization , 2013 .

[34]  N. Mehmood,et al.  Trouser tear tests of two thin polymer films , 2013 .

[35]  Simona Bronco,et al.  The effect of free radical reactions on structure and properties of poly(lactic acid) (PLA) based blends , 2010 .

[36]  Wei Yu,et al.  The preparation and crystallization of long chain branching polylactide made by melt radicals reaction , 2013 .

[37]  Soojin Park,et al.  Synergistic reinforcing of poly(lactic acid)-based systems by polybutylene succinate and nano-calcium carbonate , 2015 .

[38]  Mohammadali Shirinbayan,et al.  Some New Concepts of Shape Memory Effect of Polymers , 2014 .

[39]  A. Müller,et al.  Isothermal Cold-Crystallization of PLA/PBAT Blends With and Without the Addition of Acetyl Tributyl Citrate , 2012 .

[40]  Simona Bronco,et al.  Plasticized and nanofilled poly(lactic acid)‐based cast films: Effect of plasticizer and organoclay on processability and final properties , 2013 .

[41]  P. Cinelli,et al.  Thermal Properties of Plasticized Poly (Lactic Acid)(PLA) Containing Nucleating Agent , 2016 .