Recent advances in (reactive) melt processing of cellulose acetate and related biodegradable bio-compositions

Quintana, Robert; Persenaire, Olivier; Bonnaud, Leïla; Dubois, Philippe

doi:10.1039/c1py00421b

Cited by 50 publications

(30 citation statements)

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“…No yield point was manifested during the measurements, confirming the brittleness of the material [50,64]. Plasticization, on the contrary, is assumed to increase the flexibility of chains and lead to a decrease in stiffness [79]. The presence of PEG produces polymer-plasticizer interactions among the macromolecules to the detriment of polymer-polymer interactions and it causes a decrease of the hardness as well as Young's modulus whereas the elongation at break was increased.…”

Section: Differential Scanning Calorimetry (Dsc)mentioning

confidence: 67%

Preparation and Characterization of a Bioartificial Polymeric Material: Bilayer of Cellulose Acetate-PVA

Bernal-Ballén

Kuřitka²,

Sáha³

2016

International Journal of Polymer Science

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A new bioartificial polymeric material consisting of a bilayer of cellulose acetate and poly(vinyl alcohol) was successfully obtained by casting method. The material was characterized by Fourier transform infrared spectroscopy, contact angle, scanning electron microscopy, differential scanning calorimetry, gas permeability, water vapor permeability, and mechanical properties. The characterization indicates that two distinct and well-differentiated surfaces were achieved without detriment to the bulk properties. The interaction between natural and synthetic polymers indeed enhanced the gas permeability as well as the water vapor permeability in comparison to the original components, although mechanical properties were not substantially boosted by the combination of both. Moreover, beyond the interface, there were no detected interactions between the polymers as can be evidenced by the presence of a uniqueTgin the bilayer. The amalgamation of the relatively good mechanical properties with the two differentiated surfaces and the improvement of the permeability properties could indicate the potential of the material for being used in medicine.

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Section: Differential Scanning Calorimetry (Dsc)mentioning

confidence: 67%

Preparation and Characterization of a Bioartificial Polymeric Material: Bilayer of Cellulose Acetate-PVA

Bernal-Ballén

Kuřitka²,

Sáha³

2016

International Journal of Polymer Science

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“…206 Nonetheless, the chemistry of cellulose opens the way to various chemical modications, such as esterication and etherication give entry into a broad variety of products including coatings, base for photographic lms, lters, pharmaceutics, fragrances, polymer additives, membranes and building materials. [207][208][209] The most industrially relevant and oldest biodegradable cellulose ester derivative is cellulose acetate. 208 Cellulose acetate and mixed cellulose esters, such as cellulose diacetate, cellulose triacetate, cellulose acetate propionate, and cellulose acetate butyrate, are all commercially available materials.…”

Section: Cellulose Acetatementioning

confidence: 99%

“…[207][208][209] The most industrially relevant and oldest biodegradable cellulose ester derivative is cellulose acetate. 208 Cellulose acetate and mixed cellulose esters, such as cellulose diacetate, cellulose triacetate, cellulose acetate propionate, and cellulose acetate butyrate, are all commercially available materials. 208 These thermoplastic materials are usually synthesized through ester-ication of cellulose, 210 where other substituent groups replace the hydroxyl groups of cellulose (Fig.…”

Section: Cellulose Acetatementioning

confidence: 99%

Progress in bio-based plastics and plasticizing modifications

Mekonnen

Mussone

Khalil³

et al. 2013

J. Mater. Chem. A

692

423

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Over the coming few decades bioplastic materials are expected to complement and gradually replace some of the fossil oil based materials. Multidisciplinary research efforts have generated a significant level of technical and commercial success towards these bio-based materials. However, extensive application of these bio-based plastics is still challenged by one or more of their possible inherent limitations, such as poor processability, brittleness, hydrophilicity, poor moisture and gas barrier, inferior compatibility, poor electrical, thermal and physical properties. The incorporation of additives such as plasticizers into the biopolymers is a common practice to improve these inherent limitations. Generally, plasticizers are added to both synthetic and bio-based polymeric materials to impart flexibility, improve toughness, and lower the glass transition temperature. This review introduces the most common bio-based plastics and provides an overview of recent advances in the selection and use of plasticizers, and their effect on the performance of these materials. In addition to plasticizers, we also present a perspective of other emerging techniques of improving the overall performance of bio-based plastics. Although a wide variety of bio-based plastics are under development, this review focuses on plasticizers utilized for the most extensively studied bioplastics including poly(lactic acid), polyhydroxyalkanoates, thermoplastic starch, proteinaceous plastics and cellulose acetates. The ongoing challenge and future potentials of plasticizers for bio-based plastics are also discussed.

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“…In addition, plasticization in the "molten" state can be achieved through thermo-mechanical kneading, and production of chitosan-based films using this technique may approach industrial fabrication conditions. Such a plasticization technique has been developed since the nineties to facilitate the processing of bio-based plastics such as thermoplastic starch (TPS) (Avérous, 2004), cellulose acetate (Quintana, Persenaire, Bonnaud, & Dubois, 2012), protein-based plastics (Hernandez-Izquierdo & Krochta, 2008), polyhydroxyalkanoates (PHAs) (Holmes, 1985) or poly(lactic acid) (PLA) (Garlotta, 2001). More recently, this technique that uses mechanical and thermal energy, has been adapted to chitosan in the presence of polyols and an acetic acid aqueous solution to achieve plasticization (Epure, Griffon, Pollet, & Avérous, 2011;Matet, Heuzey, Pollet, Ajji, & Avérous, 2013).…”

Section: Introductionmentioning

confidence: 99%