Compostable Films of Mater-Bi Z Grades

Bastioli, Catia; Innocenti, Francesco Degli; Guanella, I.; Romano, G.

doi:10.1080/10601329508010294

Cited by 14 publications

(5 citation statements)

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“…And, finally, the presence of starch in the coextruded material facilitated degradation of the poly(lactic acid) fraction. This result was in accord with previous work by Bastioli and Coll 24…”

Section: Discussionsupporting

confidence: 94%

Biodegradation study of a coextruded starch and poly(lactic acid) material in various media

Gattin

Copinet

Bertrand

et al. 2003

J of Applied Polymer Sci

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ABSTRACT:The biodegradation of a coextruded starch/ poly(lactic acid) polymeric material was studied in a liquid, in an inert solid, and in composting media. Mineralization of the material's carbon content was followed using the appropriate ASTM standard experimental methods. The final percentage of biodegradation depended on the nature of the medium used. The percentage of mineralization (Cg) was better with the liquid medium (65%) than with either the compost medium (64%) or the inert medium (59%0. To understand the workings of the biodegradability of the polymer material, a measurement of the carbon balance seemed essential A repartitioning of the material's carbon between the various degradation products to biomass carbon (Cb), to carbon dioxide carbon (Cg), to dissolved organic carbon (Cs), and to residual insoluble material carbon (Cnd) produced was quantified throughout the experimental runs.

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Section: Discussionsupporting

confidence: 94%

Biodegradation study of a coextruded starch and poly(lactic acid) material in various media

Gattin

Copinet

Bertrand

et al. 2003

J of Applied Polymer Sci

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“…In addition, retrogradation and crystallization of the mobile starch chains lead to an undesired change in thermomechanical properties. Most basic research studies concerning plasticized starch materials were performed by Bastioli et al1–5…”

Section: Introductionmentioning

confidence: 99%

Processing and Characterization of Waxy Maize Starch Films Plasticized by Sorbitol and Reinforced with Starch Nanocrystals

Viguié

Molina-Boisseau

Dufresne

2007

Macromolecular Bioscience

110

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Nanocomposites films have been processed from a filler and a matrix having the same nature, i.e. waxy maize starch. The filler consists of nanoplatelet-like starch particles obtained as an aqueous suspension by acid hydrolysis of starch granules and the matrix was prepared by plasticization and disruption of starch granules with water and sorbitol. Nanocomposite films were obtained by casting and evaporating the mixture of the aqueous suspension of starch nanocrystals with the gelatinized starch. The resulting films were conditioned before testing and the effect of accelerated ageing in moist atmosphere was investigated. The thermal properties of the nanocomposite films were determined from DSC measurements and the mechanical characterization was performed in both the linear and nonlinear range.

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“…In particular, the contribution of starch and polyester components to the bag's composition was estimated by applying a two end-member mixing model. Considering the literature, references [22][23][24]26,27] and δ 13 C values determined for different polyesters and natural raw materials, corn starch and biodegradable polyesters PCL and PBS were chosen as end-members. Potential raw materials, such as polymers, potato and corn starches (C3 and C4 plants, respectively) and vegetable oils were considered in this study as possible end-members for isotope mixing analysis.…”

Section: Irms Analysismentioning

confidence: 99%

An FTIR and EA-IRMS Application to the Degradation Study of Compostable Plastic Bags in the Natural Marine Environment

Rampazzo,

Calace,

Formalewicz

et al. 2023

Applied Sciences

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The present study aims to explore the degradation process of compostable, starch-based (i.e., Mater-Bi®) shopping bags in the marine environment using isotope ratio mass spectrometry and Fourier-transform infrared spectroscopy (FTIR). The mixing model applied to the isotopic data suggested that the compostable shopping bags had a mixed composition with a higher percentage of polyesters (61% to 72%). Changes in the isotopic composition over a 73-day period of marine water immersion showed a decrease in the corn starch constituent (of 14% to 13%), with a similar rate in both types of bags in accordance with the evidence derived from the infrared spectra. The time required for complete degradation of the starch fraction was estimated by an isotopic approach from 124 to 180 days, following zero-order kinetics. The coupled application of these two analytical methodologies promises to (i) show complementary evidence regarding the time-course degradability of different polymers via FTIR changes, and (ii) infer potential degradation mechanisms via carbon isotope analyzes. We encourage the use of this information to support advancements in the development of more sustainable-by-design plastic materials.

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Compostable Films of Mater-Bi Z Grades

Cited by 14 publications

References 0 publications

Biodegradation study of a coextruded starch and poly(lactic acid) material in various media

Biodegradation study of a coextruded starch and poly(lactic acid) material in various media

Processing and Characterization of Waxy Maize Starch Films Plasticized by Sorbitol and Reinforced with Starch Nanocrystals

An FTIR and EA-IRMS Application to the Degradation Study of Compostable Plastic Bags in the Natural Marine Environment

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