Chlorella filled poly(lactic acid) (PLA)/poly(butylene adipate-co-terephthalate) (PBAT) blend bio-composites compatible with additive manufacturing processes: Fluorescent and anti-counterfeiting QR codes applications

Anti-counterfeiting in 3D printing has gained significant attention, however, current approaches often fall short of fully capitalizing on the inherent advantages of personalized manufacturing with this technology. Herein, we propose an embedded anti-counterfeiting scheme for additive manufacturing,...

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Bibliographic Details
Published in:International journal of biological macromolecules 2024-06, Vol.271 (Pt 2), p.132375, Article 132375
Main Authors: Xia, Xinshu, Li, Yan, Liu, Zhen, Yang, Songwei, Cao, Changlin, Zhou, Weiming, Chen, Qinghua, Xiao, Liren, Qian, Qingrong
Format: Article
Language:English
Subjects:
Chlorella - chemistry
Fluorescence
Fused deposition modeling
PLA/PBAT
Polyesters - chemistry
Printing, Three-Dimensional
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Summary:Anti-counterfeiting in 3D printing has gained significant attention, however, current approaches often fall short of fully capitalizing on the inherent advantages of personalized manufacturing with this technology. Herein, we propose an embedded anti-counterfeiting scheme for additive manufacturing, accompanied by a novel fluorescent encrypted quick response (QR) method. This approach involves the development of a 3D printing filament utilizing poly(lactic acid) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) bio-composites as the primary filament matrix, with varying quantities of Chlorella powder incorporated. The resulting filament has a good thermal stability near 200 °C and exhibits a distinctive red fluorescence under ultraviolet light, with the emission peak at 677 nm when excited by 415 nm blue light. Fluorescence imaging analysis confirms that the red fluorescence in 3D printed devices containing Chlorella is a result of the chlorophyll and its derivatives fluorescence effect. The fluorescent encrypted QR codes are inconspicuous in daylight but become easily discernible under ultraviolet light. In the cases of recognizable QR codes, the ∆Eab* values all exceed 35, and the LC/LB values deviate significantly from 1. This research delves into the fluorescence characteristics of Chlorella and highlights its applicability in 3D printing, specifically within the realm of product anti-counterfeiting, presenting a groundbreaking approach.
ISSN:0141-8130
1879-0003
1879-0003
DOI:10.1016/j.ijbiomac.2024.132375