scholarly journals Increase the elongation at break of poly (lactic acid) composites for use in food packaging films

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Ahmed M. El-hadi
Keyword(s):  
Lactic Acid ◽  
Food Packaging ◽  
Poly Lactic Acid ◽  
Elongation At Break ◽  
Packaging Films ◽  
Food Packaging Films

Soft and hard sections from cellulose-reinforced poly(lactic acid)-based food packaging films: A critical review

2020 ◽  
Vol 23 ◽  
pp. 100429 ◽  
Author(s):  
Azadeh Khosravi ◽  
Abdolhossein Fereidoon ◽  
Mohammad Mehdi Khorasani ◽  
Ghasem Naderi ◽  
Mohammad Reza Ganjali ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Critical Review ◽  
Food Packaging ◽  
Poly Lactic Acid ◽  
Packaging Films ◽  
Food Packaging Films

Sandwich-Architectured Poly(lactic acid)–Graphene Composite Food Packaging Films

2016 ◽  
Vol 8 (15) ◽  
pp. 9994-10004 ◽  
Author(s):  
Kunli Goh ◽  
Jenneke K. Heising ◽  
Yang Yuan ◽  
Huseyin E. Karahan ◽  
Li Wei ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Food Packaging ◽  
Poly Lactic Acid ◽  
Packaging Films ◽  
Graphene Composite ◽  
Food Packaging Films

scholarly journals Development of Bio-Composites with Enhanced Antioxidant Activity Based on Poly(lactic acid) with Thymol, Carvacrol, Limonene, or Cinnamaldehyde for Active Food Packaging

Polymers ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3652
Author(s):  
Mohammad Nahid Siddiqui ◽  
Halim Hamid Redhwi ◽  
Ioannis Tsagkalias ◽  
Evangelia C. Vouvoudi ◽  
Dimitris S. Achilias
Keyword(s):  
Antioxidant Activity ◽  
Lactic Acid ◽  
Food Packaging ◽  
Poly Lactic Acid ◽  
Multicomponent Mixtures ◽  
Casting Technique ◽  
Active Food Packaging ◽  
Catalytic Role ◽  
Food Packaging Films ◽  
Experimental Release

The new trend in food packaging films is to use biodegradable or bio-based polymers, such as poly(lactic acid), PLA with additives such as thymol, carvacrol, limonene or cinnamaldehyde coming from natural resources (i.e., thyme, oregano, citrus fruits and cinnamon) in order to extent foodstuff shelf-life and improve consumers’ safety. Single, triple and quadruple blends of these active compounds in PLA were prepared and studied using the solvent-casting technique. The successful incorporation of the active ingredients into the polymer matrix was verified by FTIR spectroscopy. XRD and DSC data revealed that the crystallinity of PLA was not significantly affected. However, the Tg of the polymer decreased, verifying the plasticization effect of all additives. Multicomponent mixtures resulted in more intense plasticization. Cinnamaldehyde was found to play a catalytic role in the thermal degradation of PLA shifting curves to slightly lower temperatures. Release of thymol or carvacrol from the composites takes place at low rates at temperatures below 100 °C. A combined diffusion-model was found to simulate the experimental release profiles very well. Higher antioxidant activity was noticed when carvacrol was added, followed by thymol and then cinnamaldehyde and limonene. From the triple-component composites, higher antioxidant activity measured in the materials with thymol, carvacrol and cinnamaldehyde.

scholarly journals Optimisation on Thermoforming of Biodegradable Poly (Lactic Acid) (PLA) by Numerical Modelling

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 654
Author(s):  
Huidong Wei
Keyword(s):  
Lactic Acid ◽  
Numerical Modelling ◽  
Temperature Profile ◽  
Food Packaging ◽  
Strong Dependence ◽  
Viscoelastic Model ◽  
Poly Lactic Acid ◽  
Strain History ◽  
Optimal Temperature ◽  
Broad Perspective

Poly (lactic acid) (PLA) has a broad perspective for manufacturing green thermoplastic products by thermoforming for its biodegradable properties. The mechanical behaviour of PLA has been demonstrated by its strong dependence on temperature and strain rate at biaxial deformation. A nonlinear viscoelastic model by the previous study was employed in a thermoforming process used for food packaging. An optimisation approach was developed by achieving the optimal temperature profile of specimens by defining multiple heating zones based on numerical modelling with finite element analysis (FEA). The forming process of a PLA product was illustrated by modelling results on shape evolution and biaxial strain history. The optimal temperature profile was suggested in scalloped zones to achieve more even thickness distribution. The sensitivity of the optimal results was addressed by checking the robustness under perturbation.

Essential oils as additives in active starch-based food packaging films: A review

2021 ◽  
Author(s):  
Thomás Corrêa Vianna ◽  
Carolina Oliveira Marinho ◽  
Luís Marangoni Júnior ◽  
Salam Adnan Ibrahim ◽  
Roniérik Pioli Vieira
Keyword(s):  
Essential Oils ◽  
Food Packaging ◽  
Packaging Films ◽  
Food Packaging Films

Effect of Chinese chives (Allium tuberosum) addition to carboxymethyl cellulose based food packaging films

2020 ◽  
Vol 235 ◽  
pp. 115944 ◽  
Author(s):  
Asad Riaz ◽  
Camel Lagnika ◽  
Hao Luo ◽  
Meimei Nie ◽  
Zhuqing Dai ◽  
...  
Keyword(s):  
Carboxymethyl Cellulose ◽  
Food Packaging ◽  
Packaging Films ◽  
Allium Tuberosum ◽  
Food Packaging Films ◽  
Chinese Chives
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