12 Life cycle analysis for economic and environmental justification of 3D-printed smart functional prototypes
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Kanwer Ajit Singh
Abstract
Food-grade thermoplastic polyethylene terephthalate glycol (PETG) is frequently used for food product packaging. According to a bibliographic review of Web of Sciences data, there is little material accessible on the use of smart PETG containers for real-time monitoring of food goods. For the circular economy, PETG thermoplastic (postconsumer waste) material has been collected, segregated, and processed mechanically without the use of any solvent in this study. By concentrating on the creation of smart containers made of PETG that can be 3D-printed, this study seeks to close the gap in the circular economy approach. To determine the remaining shelf life of particular foods, these containers can be used in conjunction with a smartphone application that utilizes Bluetooth technology. For the experimental study, a solution of mustard oil (Brassica juncea), containing allyl isothiocyanate, along with NaCl was used as a stimulus. One gram of NaCl and 10 mL of oil made up the solution. The resonant frequency peak changed from 2.75 to 2.70 GHz when the PETG substrate was exposed to this mixture and 5 mL of water to represent moisture. The dielectric constant (ε), which shifted from 2.67 to 2.73, was another notable change. Further voltage-resistance measurements on the ring resonator revealed that, when exposed to stimuli with and without moisture, respectively, the resistance of PETG reduced from 47.08 to 42.5. According to this study, PETG containers fitted with these sensors might be used to monitor the quality and safety of specific food products in real time.
Abstract
Food-grade thermoplastic polyethylene terephthalate glycol (PETG) is frequently used for food product packaging. According to a bibliographic review of Web of Sciences data, there is little material accessible on the use of smart PETG containers for real-time monitoring of food goods. For the circular economy, PETG thermoplastic (postconsumer waste) material has been collected, segregated, and processed mechanically without the use of any solvent in this study. By concentrating on the creation of smart containers made of PETG that can be 3D-printed, this study seeks to close the gap in the circular economy approach. To determine the remaining shelf life of particular foods, these containers can be used in conjunction with a smartphone application that utilizes Bluetooth technology. For the experimental study, a solution of mustard oil (Brassica juncea), containing allyl isothiocyanate, along with NaCl was used as a stimulus. One gram of NaCl and 10 mL of oil made up the solution. The resonant frequency peak changed from 2.75 to 2.70 GHz when the PETG substrate was exposed to this mixture and 5 mL of water to represent moisture. The dielectric constant (ε), which shifted from 2.67 to 2.73, was another notable change. Further voltage-resistance measurements on the ring resonator revealed that, when exposed to stimuli with and without moisture, respectively, the resistance of PETG reduced from 47.08 to 42.5. According to this study, PETG containers fitted with these sensors might be used to monitor the quality and safety of specific food products in real time.
Chapters in this book
- Frontmatter I
- Contents V
- 1 3D-printed smart functional prototypes as sensors and actuators for robotic applications 1
- 2 Biomimetic-based 3D-printed smart implants 17
- 3 3D-printed self-energized energy storage device for biomedical applications 37
- 4 4D printing of smart thermoplastic composites for online health monitoring 57
- 5 Development of 3D metal-printed smart dental implants 77
- 6 3D metal printing of partially absorbable smart orthopedic implant 101
- 7 Metastructure-based metal 3D printing for innovative application 123
- 8 Partially absorbable 3D-printed implant for health monitoring 141
- 9 Smart foot sensors by 3D bioprinting 155
- 10 3D-printed stockings for controlled drug delivery 167
- 11 3D printing-based smart solutions to boost the circular economy 181
- 12 Life cycle analysis for economic and environmental justification of 3D-printed smart functional prototypes 199
- Index 225
Chapters in this book
- Frontmatter I
- Contents V
- 1 3D-printed smart functional prototypes as sensors and actuators for robotic applications 1
- 2 Biomimetic-based 3D-printed smart implants 17
- 3 3D-printed self-energized energy storage device for biomedical applications 37
- 4 4D printing of smart thermoplastic composites for online health monitoring 57
- 5 Development of 3D metal-printed smart dental implants 77
- 6 3D metal printing of partially absorbable smart orthopedic implant 101
- 7 Metastructure-based metal 3D printing for innovative application 123
- 8 Partially absorbable 3D-printed implant for health monitoring 141
- 9 Smart foot sensors by 3D bioprinting 155
- 10 3D-printed stockings for controlled drug delivery 167
- 11 3D printing-based smart solutions to boost the circular economy 181
- 12 Life cycle analysis for economic and environmental justification of 3D-printed smart functional prototypes 199
- Index 225
