Influence of wood flour moisture content on the degree of silane-crosslinking and its relationship to structure property relations of wood-thermoplastic composites

Document identifier: oai:DiVA.org:ltu-7731
Access full text here:10.1016/j.compscitech.2009.01.021
Keyword: Engineering and Technology, Industrial Biotechnology, Bio Materials, Teknik och teknologier, Industriell bioteknik, Biomaterial, Trä och bionanokompositer, Wood and Bionanocomposites
Publication year: 2009
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Abstract:

The objective of this work was to examine how the moisture content of wood flour affects the degree of crosslinking when producing silane-crosslinked wood-thermoplastic composites. Crosslinked composites were produced by adding a silane solution to the compounding process of wood flour and polyethylene. Crosslinked composites of pre-dried as well as non-dried wood flour were prepared and their degree of crosslinking at various storage conditions was determined. Mechanical properties and the creep response of the crosslinked composites were tested in order to establish structure-properties relations. The results showed that all crosslinked composites displayed higher strengths and lower creep responses compared with non-crosslinked control samples. However, the degree and rate of crosslinking proved to be lower when a larger amount of moisture was present in the compounding process. It was concluded that the silane-grafting yield was lower when wood flour of a higher moisture content was used.

Authors

Göran Grubbström

Other publications >>

Kristiina Oksman

Luleå tekniska universitet; Materialvetenskap
Other publications >>

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        identifier: oai:DiVA.org:ltu-7731
        datestamp: 2021-04-19T12:20:47Z
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                version: 3.7
            recordInfo: 
                recordContentSource: ltu
                recordCreationDate: 2016-09-29
            identifier: 
                http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-7731
                10.1016/j.compscitech.2009.01.021
                2-s2.0-64849090767
                626259e0-a847-11dd-97e4-000ea68e967b
            titleInfo: 
                @attributes: 
                    lang: eng
                title: Influence of wood flour moisture content on the degree of silane-crosslinking and its relationship to structure property relations of wood-thermoplastic composites
            abstract: 
The objective of this work was to examine how the moisture content of wood flour affects the degree of crosslinking when producing silane-crosslinked wood-thermoplastic composites. Crosslinked composites were produced by adding a silane solution to the compounding process of wood flour and polyethylene. Crosslinked composites of pre-dried as well as non-dried wood flour were prepared and their degree of crosslinking at various storage conditions was determined. Mechanical properties and the creep response of the crosslinked composites were tested in order to establish structure-properties relations. The results showed that all crosslinked composites displayed higher strengths and lower creep responses compared with non-crosslinked control samples. However the degree and rate of crosslinking proved to be lower when a larger amount of moisture was present in the compounding process. It was concluded that the silane-grafting yield was lower when wood flour of a higher moisture content was used.

            subject: 
                    @attributes: 
                        lang: eng
                        authority: uka.se
                    topic: 
                        Engineering and Technology
                        Industrial Biotechnology
                        Bio Materials
                    @attributes: 
                        lang: swe
                        authority: uka.se
                    topic: 
                        Teknik och teknologier
                        Industriell bioteknik
                        Biomaterial
                    @attributes: 
                        lang: swe
                        authority: ltu
                    topic: Trä och bionanokompositer
                    genre: Research subject
                    @attributes: 
                        lang: eng
                        authority: ltu
                    topic: Wood and Bionanocomposites
                    genre: Research subject
            language: 
                languageTerm: eng
            genre: 
                publication/journal-article
                ref
            note: 
                Published
                2
                Validerad; 2009; 20081101 (krioks)
            name: 
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                        type: personal
                        authority: ltu
                    namePart: 
                        Grubbström
                        Göran
                    role: 
                        roleTerm: aut
                    nameIdentifier: grubb
                    @attributes: 
                        type: personal
                        authority: ltu
                    namePart: 
                        Oksman
                        Kristiina
                    role: 
                        roleTerm: aut
                    affiliation: 
                        Luleå tekniska universitet
                        Materialvetenskap
                    nameIdentifier: 
                        krioks
                        0000-0003-4762-2854
            originInfo: 
                dateIssued: 2009
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                @attributes: 
                    type: host
                titleInfo: 
                    title: Composites Science And Technology
                identifier: 
                    0266-3538
                    1879-1050
                part: 
                    detail: 
                            @attributes: 
                                type: volume
                            number: 69
                            @attributes: 
                                type: issue
                            number: 7-8
                    extent: 
                        start: 1045
                        end: 1050
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