PMID- 21780386
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20110815
LR  - 20190715
IS  - 1533-4880 (Print)
IS  - 1533-4880 (Linking)
VI  - 11
IP  - 5
DP  - 2011 May
TI  - Direct current conductivity of carbon nanofiber-based conductive polymer 
      composites: effects of temperature and electric field.
PG  - 3916-21
AB  - Polymer composites based on high density polyethylene (HDPE) and carbon nanofiber 
      (CNF) were fabricated by melt compounding. The dependences of electrical 
      conductivity of HDPE-CNF composites on filler concentration, temperature, and 
      applied electric field were investigated. The results showed that the 
      conductivity of the HDPE-CNF composites follows the scaling law of percolation 
      theory. Increasing temperature caused a sharp increase in the resistivity of 
      HDPE-CNF composites near the melting temperature of HDPE, yielding a positive 
      temperature coefficient (PTC) effect of resistance. The potential mechanisms 
      involved in the PTC effect of such composites were analyzed. An investigation of 
      the effect of electric field on the conductivity of HDPE-CNF composites revealed 
      the presence of tunneling conduction. The tunneling conductivity increased with 
      increasing filler content because of high tunneling frequency, and decreased with 
      rising temperature as a result of gap widening between conducting CNF fillers.
FAU - He, Lin Xiang
AU  - He LX
AD  - Department of Physics and Materials Science, City University of Hong Kong, Hong 
      Kong.
FAU - Tjong, Sie Chin
AU  - Tjong SC
LA  - eng
PT  - Journal Article
PL  - United States
TA  - J Nanosci Nanotechnol
JT  - Journal of nanoscience and nanotechnology
JID - 101088195
EDAT- 2011/07/26 06:00
MHDA- 2011/07/26 06:01
CRDT- 2011/07/26 06:00
PHST- 2011/07/26 06:00 [entrez]
PHST- 2011/07/26 06:00 [pubmed]
PHST- 2011/07/26 06:01 [medline]
AID - 10.1166/jnn.2011.3837 [doi]
PST - ppublish
SO  - J Nanosci Nanotechnol. 2011 May;11(5):3916-21. doi: 10.1166/jnn.2011.3837.