Göldel Andreas, Kasaliwal Gaurav, Pötschke Petra
Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, 01069 Dresden, Germany.
Macromol Rapid Commun. 2009 Mar 19;30(6):423-9. doi: 10.1002/marc.200800549. Epub 2008 Nov 12.
Multiwalled carbon nanotubes (MWNTs) have been introduced into blends of polycarbonate (PC) and poly(styrene-acrylonitrile) (SAN) by melt mixing in a microcompounder. Co-continuous blends are prepared by either pre-compounding low amounts of nanotubes into PC or SAN or by mixing all three components together. Interestingly, in all blends, regardless of the way of introducing the nanotubes, the MWNTs were exclusively located within the PC phase, which resulted in much lower electrical resistivities as compared to PC or SAN composites with the same MWNT content. The migration of MWNTs from the SAN phase into the PC phase during common mixing is explained by interfacial effects.
通过在微型混合机中熔融共混，将多壁碳纳米管（MWNTs）引入聚碳酸酯（PC）和聚（苯乙烯-丙烯腈）（SAN）的共混物中。通过将少量纳米管预混到PC或SAN中，或者将所有三种组分混合在一起，制备了双连续共混物。有趣的是，在所有共混物中，无论引入纳米管的方式如何，MWNTs都仅位于PC相中，这导致与具有相同MWNT含量的PC或SAN复合材料相比，电阻率要低得多。在普通混合过程中，MWNTs从SAN相迁移到PC相的现象可以通过界面效应来解释。
