PMID- 37512176
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230731
IS  - 1996-1944 (Print)
IS  - 1996-1944 (Electronic)
IS  - 1996-1944 (Linking)
VI  - 16
IP  - 14
DP  - 2023 Jul 9
TI  - Negative Capacitance in Nanocomposite Based on High-Density Polyethylene (HDPE) 
      with Multiwalled Carbon Nanotubes (CNTs).
LID - 10.3390/ma16144901 [doi]
LID - 4901
AB  - Negative capacitance (NC), already observed in conducting polymer-based 
      nanocomposites, was recently reported and evidenced at low frequencies (<10 kHz) 
      in non-conducting polymer-based nanocomposites containing conductive particles. 
      In this contribution, we demonstrate that it is possible to produce economic 
      high-density polyethylene (HDPE) nanocomposites exhibiting an NC effect at low 
      frequencies via a convenient and environmentally friendly extrusion-like process 
      by only adjusting the duration of melt-mixing. Nanocomposite materials are 
      produced by confining a limited quantity, i.e., 4.6 wt.%, of multiwalled carbon 
      nanotubes (CNTs) within semi-crystalline HDPE to reach the percolation threshold. 
      With increasing melt processing time, crystallites of HDPE developing at the 
      surface of CNTs become bigger and perturbate the connections between CNTs leading 
      to a dramatic change in the electrical behavior of the systems. More 
      specifically, the link between NC and current oscillations is stressed while the 
      dependence of NC with the size of polymer crystallites is evidenced. NC tends to 
      appear when space charge effects take place in HDPE/MWCNT interfaces, in 
      structures with convenient crystallite sizes corresponding to 10 min of 
      melt-mixing.
FAU - Mouecoucou, Raymonde
AU  - Mouecoucou R
AD  - Laboratoire Materiaux Optiques, Photonique et Systemes (LMOPS), Universite de 
      Lorraine, 2 Rue Edouard Belin, 57070 Metz, France.
FAU - Bonnaud, Leila
AU  - Bonnaud L
AUID- ORCID: 0000-0001-6733-0133
AD  - Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and 
      Research in Materials, Materia Nova Research Center & University of Mons (UMONS), 
      Place du Parc 20, 7000 Mons, Belgium.
FAU - Dubois, Philippe
AU  - Dubois P
AUID- ORCID: 0000-0003-1534-1564
AD  - Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and 
      Research in Materials, Materia Nova Research Center & University of Mons (UMONS), 
      Place du Parc 20, 7000 Mons, Belgium.
LA  - eng
PT  - Journal Article
DEP - 20230709
PL  - Switzerland
TA  - Materials (Basel)
JT  - Materials (Basel, Switzerland)
JID - 101555929
PMC - PMC10381602
OTO - NOTNLM
OT  - carbon nanotubes
OT  - dielectric organic material
OT  - nanocomposites
OT  - negative capacitance
OT  - polyethylene
COIS- The authors declare no conflict of interest.
EDAT- 2023/07/29 11:47
MHDA- 2023/07/29 11:48
PMCR- 2023/07/09
CRDT- 2023/07/29 01:28
PHST- 2023/06/02 00:00 [received]
PHST- 2023/07/04 00:00 [revised]
PHST- 2023/07/05 00:00 [accepted]
PHST- 2023/07/29 11:48 [medline]
PHST- 2023/07/29 11:47 [pubmed]
PHST- 2023/07/29 01:28 [entrez]
PHST- 2023/07/09 00:00 [pmc-release]
AID - ma16144901 [pii]
AID - materials-16-04901 [pii]
AID - 10.3390/ma16144901 [doi]
PST - epublish
SO  - Materials (Basel). 2023 Jul 9;16(14):4901. doi: 10.3390/ma16144901.