Details

Autor(en) / Beteiligte

• Raghu, Anjanapura V.
• Lee, Yu Rok
• Jeong, Han Mo
• Shin, Cheol Min

Titel

Preparation and Physical Properties of Waterborne Polyurethane/Functionalized Graphene Sheet Nanocomposites

Ist Teil von

• Macromolecular chemistry and physics, 2008-12, Vol.209 (24), p.2487-2493

Ort / Verlag

Weinheim: WILEY-VCH Verlag

Erscheinungsjahr

2008

Quelle

Wiley Online Library - AutoHoldings Journals

Beschreibungen/Notizen

• A nanocomposite of waterborne polyurethane (WPU) was prepared with functionalized graphene sheets (FGSs) which are a new type of nano‐sized conductive filler. The FGS were finely dispersed in a polymer matrix to improve the conductivity of the WPU. Conductivity of about 105 times that of pristine WPU was attained using two parts FGS per 100 parts of the matrix polymer. The FGS reduced the hard segment crystallinity of the WPU, which lowered the modulus of the WPU at room temperature. This modulus reduction became more evident in the temperature region above the glass transition temperature of the hard segment.