PMID- 32707789
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200928
IS  - 2079-4991 (Print)
IS  - 2079-4991 (Electronic)
IS  - 2079-4991 (Linking)
VI  - 10
IP  - 8
DP  - 2020 Jul 22
TI  - Non-Isothermal Crystallization Behavior and Thermal Properties of Polyethylene 
      Tuned by Polypropylene and Reinforced with Reduced Graphene Oxide.
LID - 10.3390/nano10081428 [doi]
LID - 1428
AB  - This research work is the first to report thermal stability, heat deformation 
      resistance, and crystallization behavior of a Polyethylene (PE)-based biphasic 
      polyolefin system reinforced with Reduced Graphene Oxide (RGO), which was 
      obtained through Graphene Oxide (GO) chemical reduction. Polypropylene (PP) 
      represented the polymeric dispersed phase. A strategic PE/PP/RGO manufacturing 
      procedure was employed to thermodynamically localize RGO at the PE/PP interface, 
      as confirmed by Transmission Electron Microscopy (TEM), bringing a uniform micro 
      phase dispersion into the macro phase. In addition, studies of PE non-isothermal 
      crystallization kinetics indicated that the morphology tunable micro phase and 
      the nanolayered RGO promoted a nucleation-controlled PE crystallization, which 
      was supported by Polarized Light Optical Microscopy (PLOM). This, together with 
      fine morphology, justified the remarkable enhancement registered for the ternary 
      system's thermal stability and heat deformation resistance. Different filler 
      loads were employed, with weight fractions of 2% and 4%. It was observed that the 
      former, being better exfoliated and more homogeneously distributed at the PE/PP 
      interface than the latter, led to a more improved PE crystallization, alongside a 
      greater ternary system's thermal properties. Moreover, the thermal stability of 
      PE/PP reinforced with 2% of RGO was even higher than that of virgin PP, while 
      their heat deformation resistance values were found to be similar. Therefore, 
      this unique outcome provides industries, such as the energy and automotive 
      sectors, with the opportunity to substitute PP-rich products with those mostly 
      comprised of a cheaper, more abundant, yet performant PE.
FAU - Graziano, Antimo
AU  - Graziano A
AUID- ORCID: 0000-0001-9846-9488
AD  - Centre for Biocomposites and Biomaterials Processing, University of Toronto, 33 
      Willcocks Street, Toronto, ON M5S 3BS, Canada.
FAU - Titton Dias, Otavio Augusto
AU  - Titton Dias OA
AUID- ORCID: 0000-0002-2912-4387
AD  - Centre for Biocomposites and Biomaterials Processing, University of Toronto, 33 
      Willcocks Street, Toronto, ON M5S 3BS, Canada.
FAU - Garcia, Christian
AU  - Garcia C
AUID- ORCID: 0000-0002-7567-5681
AD  - Bahen Centre for Information Technology, University of Toronto, 40 St. George 
      Street, Toronto, ON M5S 2E4, Canada.
FAU - Jaffer, Shaffiq
AU  - Jaffer S
AD  - TOTAL American Services Inc., 82 South Street, Hopkinton, MA 01748, USA.
FAU - Tjong, Jimi
AU  - Tjong J
AD  - Centre for Biocomposites and Biomaterials Processing, University of Toronto, 33 
      Willcocks Street, Toronto, ON M5S 3BS, Canada.
FAU - Sain, Mohini
AU  - Sain M
AD  - Centre for Biocomposites and Biomaterials Processing, University of Toronto, 33 
      Willcocks Street, Toronto, ON M5S 3BS, Canada.
AD  - Department of Mechanical and Industrial Engineering, University of Toronto, 5 
      King's College Road, Toronto, ON M5S 3G8, Canada.
LA  - eng
GR  - 500256/Ontario Research Fund-Research Excellence-07 (ORF-RE-07)/
PT  - Journal Article
DEP - 20200722
PL  - Switzerland
TA  - Nanomaterials (Basel)
JT  - Nanomaterials (Basel, Switzerland)
JID - 101610216
PMC - PMC7466687
OTO - NOTNLM
OT  - Differential Scanning Calorimetry (DSC)
OT  - Heat Deformation Temperature (HDT)
OT  - Reduced Graphene Oxide (RGO)
OT  - Thermal Gravimetric Analysis (TGA)
OT  - non-isothermal crystallization kinetics
COIS- The authors declare no conflict of interest.
EDAT- 2020/07/28 06:00
MHDA- 2020/07/28 06:01
PMCR- 2020/07/22
CRDT- 2020/07/26 06:00
PHST- 2020/06/12 00:00 [received]
PHST- 2020/07/10 00:00 [revised]
PHST- 2020/07/19 00:00 [accepted]
PHST- 2020/07/26 06:00 [entrez]
PHST- 2020/07/28 06:00 [pubmed]
PHST- 2020/07/28 06:01 [medline]
PHST- 2020/07/22 00:00 [pmc-release]
AID - nano10081428 [pii]
AID - nanomaterials-10-01428 [pii]
AID - 10.3390/nano10081428 [doi]
PST - epublish
SO  - Nanomaterials (Basel). 2020 Jul 22;10(8):1428. doi: 10.3390/nano10081428.