Title of article :
Novel nanocomposite concept based on cross-linking of hyperbranched polymers in reactive cellulose nanopaper templates
Author/Authors :
Marielle Henriksson، نويسنده , , Linda Fogelstr?m، نويسنده , , Lars A. Berglund، نويسنده , , Mats Johansson، نويسنده , , Anders Hult، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
5
From page :
13
To page :
17
Abstract :
Cellulosic fibers offer interesting possibilities for good interfacial adhesion due to the high density of hydroxyl groups at the surface. In the present study, the potential of a new nanocomposite concept is investigated, where a porous cellulose nanofiber network is impregnated with a solution of reactive hyperbranched polyester. The polymer is chemically cross-linked to form a solid matrix. The resulting nanocomposite structure is unique. The matrix surrounds a tough nanopaper structure consisting of approximately 20 nm diameter nanofibers with an average interfiber distance of only about 6 nm. The cross-linked polymer matrix shows strongly altered characteristics when it is cross-linked in the confined space within the nanofiber network, including dramatically increased Tg, and this must be due to covalent matrix–nanofiber linkages.
Keywords :
D. Dynamic mechanical thermal analysis (DMTA) , Cellulose nanofiber , A. Nanocomposites , B. Interface , B. Fiber/matrix bond
Journal title :
COMPOSITES SCIENCE AND TECHNOLOGY
Serial Year :
2011
Journal title :
COMPOSITES SCIENCE AND TECHNOLOGY
Record number :
1043628
Link To Document :
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