Development of high performance sealable films based on biodegradable/compostable blends

Tabasi, Ramin Yousefzadeh; Najarzadeh, Zahra; Ajji, Abdellah

doi:10.1016/j.indcrop.2014.11.021

Cited by 18 publications

(8 citation statements)

References 36 publications

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“…The SEM images show that the blend samples with two phase morphology [63], degrade by microbial activities and leave a 3D porous network, as shown in Figure 5. The comparative ATR-FTIR spectrums of these blend samples at different composting times are depicted in Figures 7 and 8.…”

Section: Sem Micrographs Taken At Different Incubation Time and Illusmentioning

confidence: 99%

Selective degradation of biodegradable blends in simulated laboratory composting

Tabasi

Ajji

2015

Polymer Degradation and Stability

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125

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Section: Sem Micrographs Taken At Different Incubation Time and Illusmentioning

confidence: 99%

Selective degradation of biodegradable blends in simulated laboratory composting

Tabasi

Ajji

2015

Polymer Degradation and Stability

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125

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“…To add peelable function into PLA lidding film, some researchers revealed that PLA film can be modified by blending with other biopolymers. One research by Tabasi et al studied the peel–seal properties of PLA blend films containing polycaprolactone (PCL) from 20 to 80 wt%. They found that each composition showed different seal strength and the addition of PCL to the PLA significantly improved seal properties by decreasing seal initiation temperatures of more than 15°C, as compared with the neat PLA.…”

Section: Introductionmentioning

confidence: 99%

Practical Approach in Developing Desirable Peel–Seal and Clear Lidding Films Based on Poly(Lactic Acid) and Poly(Butylene Adipate‐Co‐Terephthalate) Blends

2017

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In this research, poly(lactic acid) (PLA) blend with poly(butylene adipate-co-terephthalate) (PBAT) were selected to fabricate peelable lidding films. In general, blending PLA with PBAT results in hazy films; however, desirable low haze films (<10%) could be achieved in this study by designing proper blend composition and cast film process under optimum conditions. Based on various blends containing PBAT ranging from 15 to 30% by weight, it could be seen that a PBAT/PLA blend of 20/80 showed desired optical and peel-seal property, which had a haze of <10% and low peel strength in an easy-peel characteristic. It was also observed that not only the blend composition but also the film thickness could influence both optical and peel-seal behaviours because the bulk morphology and surface irregularities of the films could vary by changing films' thicknesses. Thus, cast extruded pristine and PBAT/PLA (20/80) blend films of three different thicknesses (20, 35 and 50 μm) were studied. Peel-seal behaviour and optical properties of these films were examined. An I-peel test (180°) of films sealed on PLA sheet (thickness of~350 μm) with different interfacial sealing temperature illustrated failure mechanism of four types, i.e. tearing, partial tearing, cohesive and adhesive failure. Based on this study, the PBAT/PLA of 20/80 wt% films with thickness of 20 μm can be used as easy-peel lidding film sealed with PLA container. Such PBAT/PLA blend films possess a low haze of~4% and a low peel strength of 8-10 N/15 mm at a broad range of interfacial sealing temperature of 76-105°C. CONCLUSIONFilm with desired optical and peel-seal property for lidding film application could be achieved from the 20PBAT/80PLA blends. Developed films of such blend had desirable low haze of <10% and proper peel strength in an easy-peel characteristics. The haze of the 20PBAT/80PLA films had a profound effect from the internal or bulk structure as compared with the surface effect (e.g. surface irregularities). The bulk haze of the 20PBAT/80PLA blend films could be effectively reduced by decreasing film thickness. In practice, thin films could be fabricated at high chill roll's speed where all required market properties should be optimized. In fact, not only the blend compositions but also the films' structure and thickness played a vital role in controlling peel-seal behaviour and film clarity. Developed 20PBAT/80PLA film with a thickness of 20 μm exhibited practical properties, including a haze of~4% and a peel strength of~8-10 N/15 mm at a broad range of the interfacial sealing temperature of 76-105°C. This blend film had PBAT minor phase in the fine, oriented, strip-like structure, as revelled by SEM. When the sealed 20 μm film of 20PBAT/80PLA was peeled from the PLA substrate, cohesive failure was apparent during the peeling process. 308 P. LIEWCHIRAKORN, D. AHT-ONG AND W. CHINSIRIKUL

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“…Among these petroleumbased polymers interesting results have been obtained with poly(caprolactone)-PCL biodegradable polyester. Although both PLA and PCL are polyester-type polymers, they show restricted miscibility but the high flexibility of PCL is enough to reduce the intrinsic fragility of PLA (Carmona et al, 2015;Ferri et al, 2016a;Tabasi et al, 2015) . Other petroleum-based polymers such as poly(butylene succinate)-PBS (Deng and Thomas, 2015) , poly(butylene succinate-co-adipate)-PBSA (Pivsa-Art et al, 2015), poly(butyl acrylate)-PBA (Meng et al, 2012) and poly(butylene adipate-co-terephthalate)-PBAT (Arruda et al, 2015;Kumar et al, 2010) have been successfully blended with PLA with remarkable increase in flexibility.…”

mentioning

confidence: 99%

Plasticization effect of epoxidized cottonseed oil (ECSO) on poly(lactic acid)

Carbonell‐Verdu

Samper

Garcia‐Garcia

et al. 2017

Industrial Crops and Products

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In this work, the use of an environmentally friendly plasticizer derived epoxidized cottonseed oil (ECSO) for poly(lactic acid) (PLA) is proposed. Melt extrusion was used to plasticize PLA formulations with different ECSO contents in the 0-10 wt.%. PLA formulation with 10 wt.% shows a remarkable increase in mechanical ductile properties with a percentage increase in elongation at break of more than 1100% and a noticeable increase in the impact absorbed energy. Differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMTA) revealed a clear decrease in the glass transition temperature of neat PLA as the ECSO content increased. Field emission scanning electron microscopy (FESEM) of fractured surfaces from impact tests showed an improvement of ductility with typical rough and porous topographies. Migration tests in n-hexane at different temperatures revealed very low migration properties thus leading to new interesting plasticizers for improved PLA industrial formulations.

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Development of high performance sealable films based on biodegradable/compostable blends

Cited by 18 publications

References 36 publications

Selective degradation of biodegradable blends in simulated laboratory composting

Selective degradation of biodegradable blends in simulated laboratory composting

Practical Approach in Developing Desirable Peel–Seal and Clear Lidding Films Based on Poly(Lactic Acid) and Poly(Butylene Adipate‐Co‐Terephthalate) Blends

Plasticization effect of epoxidized cottonseed oil (ECSO) on poly(lactic acid)

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