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Chitosan/rice straw nanofibers nanocomposites: preparation, mechanical, and dynamic thermomechanical properties
Cellulose and Paper Department, National Research Center, Dokki.
Cellulose and Paper Department, National Research Center, Dokki.
Cellulose and Paper Department, National Research Center, Dokki.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.ORCID-id: 0000-0003-4762-2854
2012 (engelsk)Inngår i: Journal of Applied Polymer Science, ISSN 0021-8995, E-ISSN 1097-4628, Vol. 125, nr Suppl. 2, s. E216-E222Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Nanofibers were isolated from rice straw pulp using ultrahigh friction grinding and high-pressure homogenization. Chitosan nanocomposites were prepared using the isolated nanofibers at fiber loading from 2.5 to 20% by solution casting and evaporation technique. The effect of nanofiber loading on dry and wet tensile strength, dynamic mechanical thermal properties, and cyrstallinity of chitosan were studied using tensile testing, thermogravimetric analysis, dynamic mechanical thermal analysis, and X-ray diffraction. Addition of rice straw nanofibers (RSNF) to chitosan resulted in significant improvement in wet and dry tensile strength, and shift of glass transition temperature (Tg) of chitosan matrix to higher values. Chitosan nanocomposites prepared using RSNF (CRSNF) had remarkable wet and dry tensile strength, which could be attributed to presence of both nanofibers and nanosilica particles originally present in rice straw fibers. Addition of RSNF to chitosan did not affect its onset thermal degradation temperature

sted, utgiver, år, opplag, sider
2012. Vol. 125, nr Suppl. 2, s. E216-E222
Emneord [en]
Materials science - Other material science
Emneord [sv]
Teknisk materialvetenskap - Övrig teknisk materialvetenskap
HSV kategori
Forskningsprogram
Trä och bionanokompositer
Identifikatorer
URN: urn:nbn:se:ltu:diva-15052DOI: 10.1002/app.36606ISI: 000304862900025Scopus ID: 2-s2.0-84862020200Lokal ID: e83b2f51-3434-4ea8-b3e4-a8448bbb128bOAI: oai:DiVA.org:ltu-15052DiVA, id: diva2:988025
Merknad
Validerad; 2012; 20120329 (andbra)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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