Cellulose nanofibers decorated with magnetic nanoparticles: synthesis, structure and use in magnetized high toughness membranes for a prototype loudspeaker

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Fältnamn	Indikatorer	Metadata
000		03853naa a2200445 4500
001		oai:DiVA.org:kth-133562
003		SwePub
008		131106s2013 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1335622 URI
024	7	a https://doi.org/10.1039/C3TC31748J2 DOI
040		a (SwePub)kth
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Galland, Sylvain,d 1987-u KTH,Biokompositer,Wallenberg Wood Science Center,WWSC4 aut0 (Swepub:kth)u1ex9o98
245	1 0	a Cellulose nanofibers decorated with magnetic nanoparticles :b synthesis, structure and use in magnetized high toughness membranes for a prototype loudspeaker
264	1	c 2013
338		a electronic2 rdacarrier
500		a QC 20131220
520		a Magnetic nanoparticles are the functional component for magnetic membranes, but they are difficult to disperse and process into tough membranes. Here, cellulose nanofibers are decorated with magnetic ferrite nanoparticles formed in situ which ensures a uniform particle distribution, thereby avoiding the traditional mixing stage with the potential risk of particle agglomeration. The attachment of the particles to the nanofibrils is achieved via aqueous in situ hydrolysis of metal precursors onto the fibrils at temperatures below 100 °C. Metal adsorption and precursor quantification were carried out using Induction Coupled Plasma-Optical Emission Spectroscopy (ICP-OES). FE-SEM was used for high resolution characterization of the decorated nanofibers and hybrid membranes, and TEM was used for nanoparticle size distribution studies. The decorated nanofibers form a hydrocolloid. Large (200 mm diameter) hybrid cellulose/ferrite membranes were prepared by simple filtration and drying of the colloidal suspension. The low-density, flexible and permanently magnetized membranes contain as much as 60 wt% uniformly dispersed nanoparticles (thermogravimetric analysis data). Hysteresis magnetization was measured by a Vibrating Sample Magnetometer; the inorganic phase was characterized by XRD. Membrane mechanical properties were measured in uniaxial tension. An ultrathin prototype loudspeaker was made and its acoustic performance in terms of output sound pressure was characterized. A full spectrum of audible frequencies was resolved.
650	7	a TEKNIK OCH TEKNOLOGIERx Materialteknikx Pappers-, massa- och fiberteknik0 (SwePub)205032 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Materials Engineeringx Paper, Pulp and Fiber Technology0 (SwePub)205032 hsv//eng
653		a Nanocomposite
653		a Magnetic nanoparticle
653		a Cellulose nanofiber
653		a Mechanical properties
653		a Acoustic
700	1	a Andersson, Richardu KTH,Polymera material4 aut0 (Swepub:kth)u1ksh6cc
700	1	a Salajkova, Michaelau KTH,Biokompositer,Wallenberg Wood Science Center4 aut0 (Swepub:kth)u1li8aph
700	1	a Ström, Valteru KTH,Teknisk materialfysik4 aut0 (Swepub:kth)u1u6wc2n
700	1	a Olsson, Richardu KTH,Polymera material,Wallenberg Wood Science Center4 aut0 (Swepub:kth)u1ob386f
700	1	a Berglund, Larsu KTH,Biokompositer,Wallenberg Wood Science Center4 aut0 (Swepub:kth)u1wqz3r1
710	2	a KTHb Biokompositer4 org
773	0	t Journal of Materials Chemistry Cg 1:47, s. 7963-7972q 1:47<7963-7972x 2050-7526
856	4	u https://doi.org/10.1039/C3TC31748Jy Fulltext
856	4	u http://pubs.rsc.org/en/content/articlelanding/2013/tc/c3tc31748j#!divAbstracty Journal of Materials Chemistry C
856	4	u https://kth.diva-portal.org/smash/get/diva2:662123/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-133562
856	4 8	u https://doi.org/10.1039/C3TC31748J

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Av författaren/redakt...: Galland, Sylvain ...; Andersson, Richa ...; Salajkova, Micha ...; Ström, Valter; Olsson, Richard; Berglund, Lars

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TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Materialteknik; och Pappers massa oc ...

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