Evaluation of Layer Adhesion and Uniformity in Poly(lactic acid) and Thermoplastic Starch Multilayered Films

Higginson, Joseph L.; Kolahchi, Ahmad Rezaei; Behzadfar, Ehsan

doi:10.1021/acs.iecr.2c00898

Cited by 9 publications

(4 citation statements)

References 42 publications

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“…Materials such as protein (i.e., zein and silk fibroin) and polysaccharides (i.e., starch) are brittle (Shlush & Davidovich‐Pinhas, 2022), which accounts for a major drawback in packaging applications. Hence, innovations in processing techniques are needed to enhance the functionality and performance of sustainable packaging materials (Higginson et al, 2022; Shlush & Davidovich‐Pinhas, 2022).…”

Section: Resultsmentioning

confidence: 99%

Achieving sustainable development with sustainable packaging: A natural‐resource‐based view perspective

Lau,

Wong

2024

Bus Strat Env

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Sustainable packaging is a pivotal aspect of sustainable development, involving multi‐faceted issues such as stakeholder management and environmental policy compliance. Despite the efforts to find packaging solutions, the extant literature is largely fragmented, featuring a high level of heterogeneity among studies that spread across different disciplines, with the majority examining important packaging issues in isolation. A study that systematically consolidates findings of different important areas of sustainable packaging implementation is lacking. This challenges companies' adoption of research findings in business strategy development. Thus, this paper conducts a systematic literature review combining keyword co‐occurrence analysis, thematic analysis and qualitative content analysis to uncover major research domains, consolidate important findings and reveal unsolved research gaps, which are crucial to advancing sustainable packaging management. The findings reveal four major research domains: (1) sustainable packaging materials and properties, (2) management practices of sustainable packaging, (3) consumer behaviours towards sustainable packaging and (4) packaging waste management. Drawing on the natural‐resource‐based view (NRBV) theory and the review findings, this study proposes four future research directions: (1) identifying ways to enhance the commercialisation of sustainable packaging technological innovations, (2) uncovering reasons for insufficient social aspect investigation in sustainable packaging research, (3) exploring strategies to enhance stakeholder integration in sustainable packaging management and (4) examining contingency factors of packaging waste management effectiveness. The research agenda is important to provide practical and managerial insights for business strategy development in sustainable packaging to achieve pollution prevention, product stewardship and sustainable development capabilities to gain future growth and competitive advantage.

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Section: Resultsmentioning

confidence: 99%

Achieving sustainable development with sustainable packaging: A natural‐resource‐based view perspective

Lau,

Wong

2024

Bus Strat Env

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“…11 To overcome the weaknesses of PLA and TPS films, a large number of studies have recently been carried out on the production of two or multilayer films, as well as PLA/TPS blend films. 1,3,[11][12][13] To produce PLA/TPS blend films, both polymers need to be mixed in a molten state at the molecular level and then solidified. However, in a multilayer film, the PLA and TPS phases are separated into distinct layers.…”

Section: Introductionmentioning

confidence: 99%

Characterization of biodegradable bi‐layer films from thermoplastic starch and poly‐l‐lactic acid

Parlak,

Uzuner,

Ozdemir

et al. 2024

J of Applied Polymer Sci

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This study aimed to enhance the oxygen barrier properties of polylactic acid (PLA) film, a biodegradable packaging material with high oxygen permeability (OP). Bi‐layer films were produced by coating thermoplastic starch (TPS) onto PLA films in various ratios while maintaining constant film thickness. The mechanical, optical, barrier, thermal, hydrophobicity, moisture sorption, and microstructural properties of the films were analyzed. Increasing the TPS ratio elevated moisture content (MC), water uptake, solubility, and opacity while enhancing UV barrier properties. TPS coating reduced tensile and burst strength but increased the burst deformation of the bi‐layer films. Bi‐layer film production resulted in a water vapor permeability increase of 59.26%–94.44% compared with neat PLA while decreasing OP by 2.52%–29.66%. The equilibrium moisture content (EMC) rose with higher TPS ratios, displaying type II isotherms. FTIR analysis indicated no chemical interactions between PLA and TPS. Increasing the TPS ratio decreased PLA crystallinity, supporting the mechanical and barrier properties of the bi‐layer films. Neat and bi‐layer films exhibited smooth, homogeneous surfaces, with a visible interface in the cross‐section of the bi‐layer films. In conclusion, TPS shows promise as an alternative to improve oxygen barrier properties in PLA films without adversely affecting other properties.

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“…1,2 Combining different polymers and the proper design of a layered composite provides a cost-effective technique to achieve multiple properties in a single material, depending on the requirements of an application. Some of these properties include corrosion protection, 3 barrier properties, 4 mechanical properties, 5 UV barrier, 6 and heat resistance. 7 The characteristics of multilayer polymers make them perfect candidates for a wide range of applications, including heat shrink sleeves (HSS).…”

Section: Introductionmentioning

confidence: 99%

Effect of blend composition on the adhesion strength of EVA‐g‐MA/LLDPE‐g‐MA films to epoxy substrates

Gholami,

Cordeiro,

Sarikhani

et al. 2024

Polymer Engineering & Sci

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Heat shrink sleeves (HSS) are multilayer polymers that provide corrosion resistance for welding joints of steel pipes. Within the HSS structure, the adhesive layer is a blend of components, such as ethylene vinyl acetate (EVA) and linear low‐density polyethylene (LLDPE). In this study, a systematic approach was employed to investigate the effect of the rheology and blend composition of the maleic anhydride‐modified EVA and maleic anhydride‐modified LLDPE (EVA‐g‐MA/LLDPE‐g‐MA) adhesive layer, prepared by melt processing, on its adhesion properties. Various characterization techniques were employed to investigate the local morphology of the prepared blends at different zones. Peel strength tests were used to characterize the adhesion strength of the prepared adhesives. Our findings demonstrate that the local distribution of EVA‐g‐MA within LLDPE‐g‐MA plays a crucial role in the adhesion strength of the adhesive. The results show that the adhesion strength enhanced by nearly 45% as the composition of EVA‐g‐MA at the surface went up by 20%, shifting the failure location from the epoxy/adhesive interface to the bulk of the adhesive layer. Our hypothesis of the decrease of EVA‐g‐MA intrachain bonding and increase in the EVA‐g‐MA free chain amount in the presence of LLDPE‐g‐MA to improve the adhesion properties was corroborated through our calorimetry results where the relative EVA‐g‐MA crystallinity decreased as LLDPE‐g‐MA was introduced to the blend. The findings of our study highlight the importance of rheological behavior and blend composition in obtaining optimized performance of adhesives within the HSS structure.Highlights Compression molding of EVA‐g‐MA/LLDPE‐g‐MA induces a layered morphology. Local distribution EVA‐g‐MA/LLDPE‐g‐MA components influence their adhesion. EVA‐g‐MA at the interface improves the adhesion of EVA‐g‐MA/LLDPE‐g‐MA. LLDPE‐g‐MA suppresses the EVA‐g‐MA crystallinity. EVA‐g‐MA/LLDPE‐g‐MA composition affects adhesion at different temperatures.

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Evaluation of Layer Adhesion and Uniformity in Poly(lactic acid) and Thermoplastic Starch Multilayered Films

Cited by 9 publications

References 42 publications

Achieving sustainable development with sustainable packaging: A natural‐resource‐based view perspective

Achieving sustainable development with sustainable packaging: A natural‐resource‐based view perspective

Characterization of biodegradable bi‐layer films from thermoplastic starch and poly‐l‐lactic acid

Effect of blend composition on the adhesion strength of EVA‐g‐MA/LLDPE‐g‐MA films to epoxy substrates

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