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- Title
Synthesis and characterization of polylactic acid‐lecithin‐starch bioplastic film.
- Authors
Mukaila, Taofeek; Adeniyi, Adewale; Bello, Ibrahim; Sarker, Niloy Chandra; Monono, Ewumbua; Hammed, Ademola
- Abstract
Plastic‐induced environmental issues could be solved using biomaterials, such as polylactic acid (PLA) film. PLA film is a costly solution suggesting the need to add less expensive starch. However, PLA and starch do not mix due to their diverging water behavior. In this study, we evaluated the impact of lecithin as a compatibilizer in varying ratio of PLA and starch film. The results show that inclusion of lecithin in PLA/starch composite leads to enhanced mechanical properties compared with the composite without lecithin. All films' thermal properties were stable but the thermograph of PLA/starch display two peaks whose distance is impacted by lecithin. In addition, morphology and functional group fingerprints revealed that the addition of lecithin improved the interfacial adhesion between the two polymers. Lecithin influenced the positioning and dispersion pattern of starch granules and distinct transmittance characteristics. The improved compatibility of PLA/starch makes the resulting films less susceptible to water penetration and dissolution. This work demonstrated the possibility of using lecithin as emulsifier between PLA and starch which could expand the application of PLA/starch film especially in packaging industries and bale net wrapping.
- Subjects
POLYLACTIC acid; LECITHIN; STARCH; PACKAGING film; THERMAL properties; FUNCTIONAL groups
- Publication
Journal of Applied Polymer Science, 2024, Vol 141, Issue 19, p1
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.55345