Processing, mechanical and thermal behavior assessments of polycaprolactone/agricultural wastes biocomposites - Publikacja - MOST Wiedzy

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Processing, mechanical and thermal behavior assessments of polycaprolactone/agricultural wastes biocomposites

Abstrakt

In this paper, brewer’s spent grain (BSG) was applied as potential lignocellulose biofiller in biocompos-ites based on polycaprolactone (PCL). The PCL/BSG biocomposites filled with varying content of biofillerswere prepared via low-temperature melt-compounding. These conditions allow limiting thermal degra-dation of used biofillers during processing. The influence of biofiller content (ranging from 25 to 200parts by weight on 100 parts of PCL) on processing, static and dynamic mechanical properties, thermalproperties and water absorption was investigated. For better characterization of interfacial interactionsbetween PCL and BSG obtained results were compared with properties of biocomposites filled with otheragricultural waste - wheat bran (WB). It was observed that higher amount of amino-acids present in theBSG (21 wt.%), in comparison to WB (4 wt.%), caused partial plasticization of PCL matrix, which improvedprocessing but simultaneously deteriorated the mechanical properties of PCL/agricultural wastes bio-composites. The melt flow index of PCL/BSG was two-folds higher than for PCL/WB composites. The bestmechanical properties were achieved in case of PCL/WB biocomposites, which showed higher values ofstorage modulus, 5% higher values of hardness and at least 30% higher tensile strength in most cases.Obtained results suggest better compatibility between the PCL matrix and WB in comparison to the BSG,which were explained by differences in the content of proteins in applied biofillers. The conducted inves-tigations showed that BSG and WB could be successfully applied as a low-cost substitute of lignocellulosefillers in polymer wood composites and biocomposites.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
INDUSTRIAL CROPS AND PRODUCTS nr 76, strony 725 - 733,
ISSN: 0926-6690
Język:
angielski
Rok wydania:
2015
Opis bibliograficzny:
Hejna A., Formela K., Saeb M.: Processing, mechanical and thermal behavior assessments of polycaprolactone/agricultural wastes biocomposites// INDUSTRIAL CROPS AND PRODUCTS. -Vol. 76, (2015), s.725-733
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.indcrop.2015.07.049
Weryfikacja:
Politechnika Gdańska

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