Properties and Skin Compatibility of Films Based on Poly(Lactic Acid) (PLA) Bionanocomposites Incorporating Chitin Nanofibrils (CN)

Nanobiocomposites suitable for preparing skin compatible films by flat die extrusion were prepared by using plasticized poly(lactic acid) (PLA), poly(butylene succinate-co-adipate) (PBSA), and Chitin nanofibrils as functional filler. Chitin nanofibrils (CNs) were dispersed in the blends thanks to the preparation of pre-nanocomposites containing poly(ethylene glycol). Thanks to the use of a melt strength enhancer (Plastistrength) and calcium carbonate, the processability and thermal properties of bionanocomposites films containing CNs could be tuned in a wide range. Moreover, the resultant films were flexible and highly resistant. The addition of CNs in the presence of starch proved not advantageous because of an extensive chain scission resulting in low values of melt viscosity. The films containing CNs or CNs and calcium carbonate resulted biocompatible and enabled the production of cells defensins, acting as indirect anti-microbial. Nevertheless, tests made with Staphylococcus aureus and Enterobacter spp. (Gram positive and negative respectively) by the qualitative agar diffusion test did not show any direct anti-microbial activity of the films. The results are explained considering the morphology of the film and the different mechanisms of direct and indirect anti-microbial action generated by the nanobiocomposite based films.

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The effect of poly(ethylene glycol) as plasticizer in blends of poly(lactic acid) and poly(butylene succinate)

Journal of Applied Polymer Science ◽

10.1002/app.43044 ◽

2015 ◽

Vol 133 (8) ◽

pp. n/a-n/a ◽

Cited By ~ 18

Author(s):

Weraporn Pivsa-Art ◽

Kazunori Fujii ◽

Keiichiro Nomura ◽

Yuji Aso ◽

Hitomi Ohara ◽

...

Keyword(s):

Lactic Acid ◽

Ethylene Glycol ◽

Poly Lactic Acid ◽

Poly Ethylene Glycol ◽

Butylene Succinate ◽

Poly Ethylene

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Processability enhancement of poly(lactic acid-co-ethylene terephthalate) by blending with poly(ethylene-co-vinyl acetate), poly(3-hydroxybutyrate-co-3-hydroxyvalerate), and poly(butylene succinate)

Polymer Bulletin ◽

10.1007/s00289-010-0421-8 ◽

2010 ◽

Vol 67 (2) ◽

pp. 275-290 ◽

Cited By ~ 3

Author(s):

Mantana Opaprakasit ◽

Wannisa Kongtong ◽

Atitsa Petchsuk ◽

Pakorn Opaprakasit

Keyword(s):

Lactic Acid ◽

Vinyl Acetate ◽

Ethylene Terephthalate ◽

Poly Lactic Acid ◽

Butylene Succinate ◽

Poly Ethylene

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Sustainable Micro and Nano Additives for Controlling the Migration of a Biobased Plasticizer from PLA-Based Flexible Films

Polymers ◽

10.3390/polym12061366 ◽

2020 ◽

Vol 12 (6) ◽

pp. 1366 ◽

Cited By ~ 7

Author(s):

Laura Aliotta ◽

Alessandro Vannozzi ◽

Luca Panariello ◽

Vito Gigante ◽

Maria-Beatrice Coltelli ◽

...

Keyword(s):

Calcium Carbonate ◽

Diffusion Coefficients ◽

Chain Scission ◽

Poly Lactic Acid ◽

Partial Loss ◽

Butylene Succinate ◽

Acrylic Copolymer ◽

Flexible Films ◽

Plasticizer Migration ◽

Nanometric Calcium Carbonate

Plasticized poly(lactic acid) (PLA)/poly(butylene succinate) (PBS) blend-based films containing chitin nanofibrils (CN) and calcium carbonate were prepared by extrusion and compression molding. On the basis of previous studies, processability was controlled by the use of a few percent of a commercial acrylic copolymer acting as melt strength enhancer and calcium carbonate. Furthermore, acetyl n-tributyl citrate (ATBC), a renewable and biodegradable plasticizer (notoriously adopted in PLA based products) was added to facilitate not only the processability but also to increase the mechanical flexibility and toughness. However, during the storage of these films, a partial loss of plasticizer was observed. The consequence of this is not only correlated to the change of the mechanical properties making the films more rigid but also to the crystallization and development of surficial oiliness. The effect of the addition of calcium carbonate (nanometric and micrometric) and natural nanofibers (chitin nanofibrils) to reduce/control the plasticizer migration was investigated. The prediction of plasticizer migration from the films’ core to the external surface was carried out and the diffusion coefficients, obtained by regression of the experimental migration data plotted as the square root of time, were evaluated for different blends compositions. The results of the diffusion coefficients, obtained thanks to migration tests, showed that the CN can slow the plasticizer migration. However, the best result was achieved with micrometric calcium carbonate while nanometric calcium carbonate results were less effective due to favoring of some bio polyesters’ chain scission. The use of both micrometric calcium carbonate and CN was counterproductive due to the agglomeration phenomena that were observed.

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Physical and Mechanical Properties of Poly(Butylene Succinate) and Poly(Lactic Acid) under Landfill Conditions

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.856.245 ◽

2020 ◽

Vol 856 ◽

pp. 245-252

Author(s):

Narumon Seeponkai ◽

Krisana Poolsawat

Keyword(s):

Mechanical Properties ◽

Lactic Acid ◽

Physical And Mechanical Properties ◽

Degradation Process ◽

Chain Scission ◽

Poly Lactic Acid ◽

Ester Bond ◽

Butylene Succinate ◽

Erosion Mechanism ◽

Scanning Electron

In this study, the disintegration of poly(butylene succinate)(PBS) and poly(lactic acid) (PLA) under landfill conditions was investigated. Both polymers were melted, injected into a dumbbell-shape, and buried under the soil for 20 weeks. The morphology of the polymer from the scanning electron microscope (SEM) revealed that, after 6 weeks of the burial, the PBS polymer produced many micro-voids in the bulk of polymer. The amount of the voids increased with time. While the morphology of PLA showed a few voids and some cracks during the degradation process. Moreover, the mechanical properties of the PLA were decreased after 2 weeks following with PBS after 4 weeks of the burial times. The weight loss and the water uptake of PBS and PLA were slightly increased. From the result, it was found that the degradation of PBS and PLA proceeds via random chain scission of the ester bond through bulk erosion mechanism. The degradation of PLA degraded faster than the PBS due to the low crystallinity in the polymer chain. This result can be applied to the design waste management of biodegradable polymer products.

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Effect of Titanium Dioxide Nanoparticles on Mechanical and Thermal Properties of Poly(Lactic Acid) and Poly(Butylene Succinate) Blends

Advances in Science and Technology ◽

10.4028/www.scientific.net/ast.96.33 ◽

2014 ◽

Vol 96 ◽

pp. 33-38 ◽

Cited By ~ 1

Author(s):

Achanai Buasri ◽

Gridtapas Buranasing ◽

Ratchanon Piemjaiswang ◽

Satit Yousatit ◽

Vorrada Loryuenyong

Keyword(s):

Titanium Dioxide ◽

Lactic Acid ◽

Thermal Properties ◽

Titanium Dioxide Nanoparticles ◽

Poly Lactic Acid ◽

Mechanical And Thermal Properties ◽

Butylene Succinate ◽

Uniform Dispersion ◽

Wide Range ◽

The Matrix

Poly (lactic acid) (PLA) blended with poly (butylene succinate) (PBS) were prepared by using twin screw extruder and injection molding machine at various contents of PBS from 0-15 wt%. The surface of titanium dioxide (TiO2) nanoparticles was treated using aminopropyl trimethoxy silane (ATS) order to disperse them into the biopolymer blends. The mechanical and thermal properties of PLA/PBS/TiO2 nanocomposites were investigated over a range of filler content 0-5 wt%. All samples with a wide range of TiO2 addition exhibit the translucency. The surface morphology showed that the addition of PBS at 10 wt% was miscible with PLA while the other contents of PBS exhibited phase separation in the blends. Additionally, a uniform dispersion of filler in the matrix existed when the nanoparticles content was less than 3 wt%. The surface treated nanoparticles played an important role in mechanical and thermal properties of the nanocomposites because of its well dispersion and strong interfacial interaction between the nanoparticles and PLA/PBS matrix.

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Rapid analysis of polyester and polyethylene blends by ion mobility-mass spectrometry

Polymer Chemistry ◽

10.1039/c4py00164h ◽

2014 ◽

Vol 5 (11) ◽

pp. 3576-3582 ◽

Cited By ~ 18

Author(s):

Caroline Barrère ◽

Wahiba Selmi ◽

Marie Hubert-Roux ◽

Thierry Coupin ◽

Budagwa Assumani ◽

...

Keyword(s):

Mass Spectrometry ◽

Lactic Acid ◽

Ion Mobility ◽

Rapid Analysis ◽

Poly Lactic Acid ◽

Ion Mobility Mass Spectrometry ◽

Butylene Succinate ◽

Polyethylene Blends ◽

Poly Ethylene

In this work ion mobility-mass spectrometry (IM-MS) coupled to an atmospheric solid analysis probe (ASAP) was used for the characterization of polymer blends involving biodegradable polymers (poly(lactic acid) (PLA), poly(butylene succinate) (PBS)) and poly(ethylene) (PE).

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Preparation and characterization of solution blended poly(ethylene terephthalate-co-ethylene furandicarboxylate) and poly(lactic acid)

Future Energy, Environment and Materials ◽

10.2495/feem130771 ◽

2014 ◽

Author(s):

Hae-Ri Kim ◽

Byeong-Uk Nam ◽

Yeon-Hee Kim

Keyword(s):

Lactic Acid ◽

Ethylene Terephthalate ◽

Poly Lactic Acid ◽

Poly Ethylene Terephthalate ◽

Poly Ethylene

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Poly(Lactic Acid)–Poly(Butylene Succinate)–Sugar Beet Pulp Composites; Part I: Mechanics of Composites with Fine and Coarse Sugar Beet Pulp Particles

Polymers ◽

10.3390/polym13152531 ◽

2021 ◽

Vol 13 (15) ◽

pp. 2531

Author(s):

Rodion Kopitzky

Keyword(s):

Mechanical Properties ◽

Lactic Acid ◽

Sugar Beet ◽

Cell Structure ◽

Sugar Beet Pulp ◽

Poly Lactic Acid ◽

Butylene Succinate ◽

Fracture Patterns ◽

Beet Pulp ◽

The Impact

Sugar beet pulp (SBP) is a residue available in large quantities from the sugar industry, and can serve as a cost-effective bio-based and biodegradable filler for fully bio-based compounds based on bio-based polyesters. The heterogeneous cell structure of sugar beet suggests that the processing of SBP can affect the properties of the composite. An “Ultra-Rotor” type air turbulence mill was used to produce SBP particles of different sizes. These particles were processed in a twin-screw extruder with poly(lactic acid) (PLA) and poly(butylene succinate) (PBS) and fillers to granules for possible marketable formulations. Different screw designs, compatibilizers and the use of glycerol as a thermoplasticization agent for SBP were also tested. The spherical, cubic, or ellipsoidal-like shaped particles of SBP are not suitable for usage as a fiber-like reinforcement. In addition, the fineness of ground SBP affects the mechanical properties because (i) a high proportion of polar surfaces leads to poor compatibility, and (ii) due to the inner structure of the particulate matter, the strength of the composite is limited to the cohesive strength of compressed sugar-cell compartments of the SBP. The compatibilization of the polymer–matrix–particle interface can be achieved by using compatibilizers of different types. Scanning electron microscopy (SEM) fracture patterns show that the compatibilization can lead to both well-bonded particles and cohesive fracture patterns in the matrix. Nevertheless, the mechanical properties are limited by the impact and elongation behavior. Therefore, the applications of SBP-based composites must be well considered.

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