Zum Verhalten von Jute- und Flachsfaser-Epoxidharz-Verbunden mit alkalibehandelten Fasern bei Feuchteexposition

Gassan, Jochen; Błędzki, Andrzej K.

doi:10.1002/(sici)1522-9505(19990701)268:1<22::aid-apmc22>3.0.co;2-q

Cited by 4 publications

(1 citation statement)

References 11 publications

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“…A lower tensile strength was reported for jute-epoxy resin composites and a slightly higher tensile strength for fl ax-epoxy composites. Furthermore, the dynamic strength of the composites was improved by the use of alkali treated fi bres 7,8 .…”

Section: Alkali Treatmentmentioning

confidence: 99%

Morphological Characterisation of Natural Fibre Reinforced Thermoplastics (NFRTP) Processed by Extrusion, Compression and Rotational Moulding

Torres

Díaz

2004

Polymers and Polymer Composites

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In this paper we describe a methodology for applying conventional morphological characterization techniques to some of the manufacturing processes of natural fibre reinforced thermoplastics (NFRTP). The composites studied consisted of a matrix of polypropylene or polyethylene, and of discrete jute, sisal and other natural fibres as the reinforcement. Different microscopic techniques have been used to characterize the processing stages and the structure-property relationships during the manufacture of NFRTPs using single screw extrusion, compression and rotational moulding. Important issues in the processing of discrete fibre composites, such as fibre length distributions, fibre orientation and overall fibre dispersion in the matrix have been studied. Transcrystallinity in the case PP/sisal and PP/jute composites has also been reported. In all cases the characterization procedures described here are related to the manufacturing processes studied in each particular case. In fact, a systematic approach to morphological characterization is presented in this study. We believe that all or some of techniques discussed here could be implemented as quality control procedures in the manufacturing of products using NFRTPs.

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Section: Alkali Treatmentmentioning

confidence: 99%

Morphological Characterisation of Natural Fibre Reinforced Thermoplastics (NFRTP) Processed by Extrusion, Compression and Rotational Moulding

Torres

Díaz

2004

Polymers and Polymer Composites

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Carnauba straw: Characterization and chemical treatments

Fernandes¹,

Dantas²,

Fonseca³

et al. 2011

J of Applied Polymer Sci

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The influence of chemical modifications, such as dewaxing with hexane and carbon tetrachloride, and alkaline treatment, on the mechanical, thermal, and sorption properties of carnauba straw was investigated for the first time. Scanning electron microscopy showed that the solvent treatments removed the wax layer, exposing the straw fibrils. The straw water sorption capacity was very high, and the treatments turned it from Fickian to non-Fickian. The results show that the solvents used were very effective in removing the surface wax layer, whereas alkali, on the other hand, promoted a more marked change in the chemical structure of the straw. The chemical treatments demonstrated that the wax surface layer was very important in determining the final properties of this material and that its removal reduced the thermal stability and Young's modulus from 143 to 48 MPa and increased its hydrophilicity, changing the contact angle from 90 to 60. As a result, carnauba straw is a potentially promising material to be used, for example, as a natural fiber with polymer matrices for the manufacture of lowcost, ecofriendly composite materials.

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Die dritte industrielle Revolution am Bau auf biogener und bionischer Basis

Hofbauer

Rennebarth

Breuer

et al. 2009

Chemie Ingenieur Technik

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Für nachwachsende Rohstoffe und bionische Applikationen bestehen vielfältige Einsatzmöglichkeiten in der modernen Bautechnik, aber auch traditionell werden seit langer Zeit erneuerbare Materialien verwendet. Biogene Baustoffe haben neben interessanten technischen Eigenschaften den Vorteil, dass sie auch biologisch abbaubar bzw. weitgehend CO2-neutral thermisch verwertet werden können. Neben der Anwendung von Produkten, die direkt der Landwirtschaft entstammen, wie z. B. Fasern, gibt es heute Ansätze für Biokomposite, die neue Eigenschaften aufweisen, welche für den Bau von Interesse sind. Biogene Composite bieten nicht nur im Hinblick auf das Life Cycle Assessment enorme Vorteile, sondern beispielsweise auch im Hinblick auf ihre bessere Statik bei geringerem Gewicht oder erhöhte Dauerhaftigkeit bei gleichzeitiger Wiederverwertbarkeit. In der Baustoffchemie eröffnen sich durch die Verwendung von Basischemikalien biogenen Ursprungs sowie durch die Nanotechnologie neue Perspektiven. Zusätzliche Impulse erhält die Bautechnik durch Anwendung bionischer Prinzipien

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Zum Verhalten von Jute- und Flachsfaser-Epoxidharz-Verbunden mit alkalibehandelten Fasern bei Feuchteexposition

Cited by 4 publications

References 11 publications

Morphological Characterisation of Natural Fibre Reinforced Thermoplastics (NFRTP) Processed by Extrusion, Compression and Rotational Moulding

Morphological Characterisation of Natural Fibre Reinforced Thermoplastics (NFRTP) Processed by Extrusion, Compression and Rotational Moulding

Carnauba straw: Characterization and chemical treatments

Die dritte industrielle Revolution am Bau auf biogener und bionischer Basis

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