Selective Localization Behavior of Carbon Nanotubes: Effect on Transesterification of Immiscible Polyester Blends
writer：Wu, Defeng，Sun, Yurong，Lin, Dongpo，Zhou, Weidong，Zhang, Ming(*)，Yuan, Lijuan
keywords：Carbon Nanotubes, Immiscible Polyester Blends
source：期刊
specific source：Macromolecular Chemistry and Physics
Issue time：2011年
The selective localization of carbon nanotubes (CNTs) in an immiscible polymer blend has
attracted much attention. If the two component polymers could react with each other, do
selectively located CNTs affect those reactions? Here, an immiscible polyester blend based on
polycarbonate/poly(trimethylene terephthalate) (PC/PTT) is studied. CNTs introduced during
melt mixing are selectively located in the
PTT phase and on the phase interface
during the middle stage of melt mixing.
The interface-located CNTs can act as
additional substrate to catalyze or even
participate in the transesterification
themselves, homogenizing the phase
morphology of the matrix blend. The
degree of randomness of the composite
systems is increased, accompanied by a
reduced number-average length of the
copolymer sequences.