Extrusion of xylans extracted from corn cobs into biodegradable polymeric materials

Bahçegül, Erinç; Akinalan, Busra; Toraman, Hilal Ezgi; Erdemir, Duygu; Özkan, Necati; Bakır, Ufuk

doi:10.1016/j.biortech.2013.09.097

Cited by 15 publications

(17 citation statements)

References 18 publications

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“…12 Xylan-based strips were extruded from these conditioned polymers using a twinscrew extruder operated at 90 C and 50 rpm. 12 Xylan-based strips were extruded from these conditioned polymers using a twinscrew extruder operated at 90 C and 50 rpm.…”

Section: Resultsmentioning

confidence: 99%

“…12,37 Corn cobs (Hatay, Turkey) were milled with a Thomas-Wiley mill (Arthur Thomas Co., Philadelphia, USA) and sieved (1.19 mm to 150 mm particle size). 12,37 Corn cobs (Hatay, Turkey) were milled with a Thomas-Wiley mill (Arthur Thomas Co., Philadelphia, USA) and sieved (1.19 mm to 150 mm particle size).…”

Section: Extraction Of Xylansmentioning

confidence: 99%

“…(2013) 12 reported an arabinose to xylose ratio of the xylan polymers of 0.23 and a viscosity average molecular weight of 44 000 g mol À1 .…”

Section: Extraction Of Xylansmentioning

confidence: 99%

“…12 A die with a 5 Â 0.5 mm (width Â thickness) rectangular opening was used to obtain extrudates in the form of a strip. 12 A die with a 5 Â 0.5 mm (width Â thickness) rectangular opening was used to obtain extrudates in the form of a strip.…”

Section: Extrusion Of Xylansmentioning

confidence: 99%

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Post-extrusion heat-treatment as a facile method to enhance the mechanical properties of extruded xylan-based polymeric materials

et al. 2014

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Hemicelluloses are among the most abundant renewable polymers in nature, and their processing into biodegradable polymeric materials via extrusion was recently reported as a novel alternative technique for solvent casting. A simple heat-treatment step conducted after the extrusion of corn cob xylans was found to enhance the mechanical properties of strips by altering their moisture absorption behavior. Depending on the heat-treatment temperature, which varied between 60 C and 150 C, xylan-based strips with an ultimate tensile strength greater than 120 MPa, elongation at break of around 30% and elastic modulus of approximately 1.2 GPa were obtained. The equilibrium moisture content of the strips decreased with increasing heat-treatment temperature. Considering that water acts as a plasticizer for hemicellulose based materials, the changes in the mechanical properties were found to be associated with the changes in the equilibrium moisture contents of the strips.

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Section: Resultsmentioning

confidence: 99%

Section: Extraction Of Xylansmentioning

confidence: 99%

“…(2013) 12 reported an arabinose to xylose ratio of the xylan polymers of 0.23 and a viscosity average molecular weight of 44 000 g mol À1 .…”

Section: Extraction Of Xylansmentioning

confidence: 99%

Section: Extrusion Of Xylansmentioning

confidence: 99%

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Post-extrusion heat-treatment as a facile method to enhance the mechanical properties of extruded xylan-based polymeric materials

et al. 2014

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“…Unlike casting, extrusion is a continuous process used to make films/sheets from biopolymers. Film extrusion of polysaccha rides has been reported; corn cob arabinoglucuronoxylan, starch, pectin, and sugar beet pulp have been successfully utilized in sheet extrusion (Fishman et al, 2000(Fishman et al, , 2004Rouilly et al, 2009;Bahcegul et al, 2013;Hietala et al, 2013;Akkus et al, 2014). ln addition, sunflower protein isolate and soy protein films have been pro duced by extrusion (Zhang et al, 2001;Rouilly et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Comparison of two wheat bran extracts in the sheet extrusion process

Heikkinen

Jacquemin

Rouilly

et al. 2016

Industrial Crops and Products

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ln this study the applicability oftwo differently purified crude wheat bran extracts for sheet manufactur ing was evaluated. The sheet extrusion was chosen for material production because it is an industrially feasible large-scale process. The wheat bran extracts had different starch ( 45% and 11%) and protein (18% and 38%) contents but similar arabinoxylan (16% and 17%) and lignin (11 % and 12%) contents. Glycerol, sorbitol, and their blends were used as external polyol plasticizers to enhance the continuous formation of the sheet during the process. With the chosen extrusion parameters, cohesive 100-mm-wide sheets were successfully produced with single screw extruder. The mechanical and thermal properties of the sheets were evaluated, as well as their water sensitivity. Sorbitol plasticization made the sheets stronger and stiffer and significantly lowered the watervapor permeability(WVP)and watervapor sorption (WVS) of the sheets as compared to glycerol plasticization. The sheets rich in starch had a higher tensile strength and elongation at break and a lower WVP and WVS than sheets with low starch content and high prote in content. The strongest and stiffest sheet with the lowest WVP was the sorbitol-plasticized sheet with high starch and low protein content.

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Utilization of Cereal Crop Residues, Cereal Milling, Sugarcane and Dairy Processing By-Products for Sustainable Packaging Solutions

et al. 2021

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Extrusion of xylans extracted from corn cobs into biodegradable polymeric materials

Cited by 15 publications

References 18 publications

Post-extrusion heat-treatment as a facile method to enhance the mechanical properties of extruded xylan-based polymeric materials

Post-extrusion heat-treatment as a facile method to enhance the mechanical properties of extruded xylan-based polymeric materials

Comparison of two wheat bran extracts in the sheet extrusion process

Utilization of Cereal Crop Residues, Cereal Milling, Sugarcane and Dairy Processing By-Products for Sustainable Packaging Solutions

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