PMID- 36985933
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230331
IS  - 2079-4991 (Print)
IS  - 2079-4991 (Electronic)
IS  - 2079-4991 (Linking)
VI  - 13
IP  - 6
DP  - 2023 Mar 14
TI  - Carbon Nanotube Migration in a Compatibilized Blend System, Leading to 
      Kinetically Induced Enhancement in Electrical Conductivity and Mechanical 
      Properties.
LID - 10.3390/nano13061039 [doi]
LID - 1039
AB  - Kinetic factors that facilitate carbon nanotube (CNT) migration in a polymer 
      blend from a high-density polyethylene (HDPE) phase to a poly (p-phenylene ether) 
      (PPE) phase were studied, with the objective to induce CNT migration and 
      localization at the interface. Herein, a CNT filler was pre-localized in an HDPE 
      polymer and then blended with PPE at different blend compositions of 20:80, 
      40:60, 60:40, and 80:20 of PPE/HDPE at a constant filler concentration of 1 wt%. 
      The level of CNT migration was studied at different mixing times of 5 and 10 min. 
      The electrical conductivity initially increased by 2-3 orders of magnitude, with 
      an increase in the PPE content up to 40%, and then it decreased significantly by 
      up to 12 orders of magnitude at high PPE content up to 100%. We determined that 
      the extent of migration was related to the difference in the melt viscosity 
      between the constituent polymers. A triblock copolymer 
      styrene-ethylene/butylene-styrene (SEBS) was used to improve the blend 
      miscibility, and 2 wt% copolymer was found to be the optimum concentration for 
      the electrical properties for the two blend compositions of 20:80 and 80:20 of 
      PPE/HDPE, at a constant filler concentration of 1 wt%. The introduction of the 
      SEBS triblock copolymer significantly increased the conductivity almost by almost 
      four orders of magnitude for PPE/HDPE/80:20 composites with 1 wt% CNT and 2 wt% 
      SEBS compared to the uncompatibilized blend nanocomposite. The mechanical 
      strength of the compatibilized blend nanocomposites was found to be higher than 
      the unfilled compatibilized blend (i.e., without CNT), uncompatibilized blend 
      nanocomposites, and the pristine blend, illustrating the synergistic effect of 
      adding nanofillers and a compatibilizer. SEM and TEM microstructures were used to 
      interpret the structure-property relationships of these polymer blend 
      nanocomposites.
FAU - Azubuike, Lilian
AU  - Azubuike L
AD  - Department of Chemical and Petroleum Engineering, University of Calgary, 2500 
      University Drive NW, Calgary, AB T2N 1N4, Canada.
FAU - Wang, Jun
AU  - Wang J
AD  - Advanced Materials Thrust, The Hong Kong University of Science and Technology 
      (Guangzhou), Guangzhou 511453, China.
AD  - Department of Chemical and Biological Engineering, The Hong Kong University of 
      Science and Technology, Hong Kong 999077, China.
FAU - Sundararaj, Uttandaraman
AU  - Sundararaj U
AD  - Department of Chemical and Petroleum Engineering, University of Calgary, 2500 
      University Drive NW, Calgary, AB T2N 1N4, Canada.
LA  - eng
GR  - 05503-2020/Natural Sciences and Engineering Research Council/
PT  - Journal Article
DEP - 20230314
PL  - Switzerland
TA  - Nanomaterials (Basel)
JT  - Nanomaterials (Basel, Switzerland)
JID - 101610216
PMC - PMC10051242
OTO - NOTNLM
OT  - SEBS
OT  - carbon nanotube
OT  - compatibilization
OT  - electrical conductivity
OT  - high-density polyethylene
OT  - interface
OT  - kinetics
OT  - migration
OT  - poly phenylene ether/oxide
OT  - structure-property relationship
OT  - tensile properties
COIS- The authors declare no conflict of interest.
EDAT- 2023/03/30 06:00
MHDA- 2023/03/30 06:01
PMCR- 2023/03/14
CRDT- 2023/03/29 01:58
PHST- 2023/02/03 00:00 [received]
PHST- 2023/02/23 00:00 [revised]
PHST- 2023/03/08 00:00 [accepted]
PHST- 2023/03/30 06:01 [medline]
PHST- 2023/03/29 01:58 [entrez]
PHST- 2023/03/30 06:00 [pubmed]
PHST- 2023/03/14 00:00 [pmc-release]
AID - nano13061039 [pii]
AID - nanomaterials-13-01039 [pii]
AID - 10.3390/nano13061039 [doi]
PST - epublish
SO  - Nanomaterials (Basel). 2023 Mar 14;13(6):1039. doi: 10.3390/nano13061039.