PMID- 37765596
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20231003
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 15
IP  - 18
DP  - 2023 Sep 13
TI  - A New Approach to Estimating the Parameters of Structural Formations in HDPE 
      Reactor Powder.
LID - 10.3390/polym15183742 [doi]
LID - 3742
AB  - The morphology of virgin reactor powder (RP) of high-density polyethylene (HDPE) 
      with M(W) = 160,000 g/mol was investigated using DSC, SEM, SAXS, and WAXS 
      methods. The morphological SEM analysis showed that the main morphological units 
      of RP are macro- and micro-shish-kebab structures with significantly different 
      geometric dimensions, as well as individual lamellae of folded chain crystals. A 
      quantitative analysis of an asymmetric SAXS reflection made it possible to reveal 
      the presence of several periodic morphoses in the RP with long periods ranging 
      from 20 nm to 60 nm, and to correlate them with the observed powder morphology. 
      According to the DSC crystallinity data, the thickness of the lamellae in each 
      long period was estimated. Their surface energy was calculated in the framework 
      of the Gibbs-Thompson theory. The presence of regular and irregular folds on the 
      surface of different shish-kebab lamellae was discussed. The percentage of 
      identified morphoses in the RP was calculated. It has been suggested that the 
      specific structure of HDPE RP is due to the peculiarity of polymer 
      crystallization during suspension synthesis in a quasi-stationary regime, in 
      which local overheating and inhomogeneous distribution of shear stresses in a 
      chemical reactor are possible.
FAU - Borisov, Artem
AU  - Borisov A
AUID- ORCID: 0000-0001-8010-5467
AD  - Laboratory of Physics of Strength, Ioffe Institute, Polytechnicheskaya St. 26, 
      St. Petersburg 194021, Russia.
FAU - Boiko, Yuri
AU  - Boiko Y
AUID- ORCID: 0000-0003-3031-5137
AD  - Laboratory of Physics of Strength, Ioffe Institute, Polytechnicheskaya St. 26, 
      St. Petersburg 194021, Russia.
FAU - Gureva, Svetlana
AU  - Gureva S
AUID- ORCID: 0000-0001-7426-7304
AD  - Laboratory of Physics of Strength, Ioffe Institute, Polytechnicheskaya St. 26, 
      St. Petersburg 194021, Russia.
FAU - Danilova, Ksenia
AU  - Danilova K
AD  - Laboratory of Physics of Strength, Ioffe Institute, Polytechnicheskaya St. 26, 
      St. Petersburg 194021, Russia.
FAU - Egorov, Victor
AU  - Egorov V
AD  - Laboratory of Physics of Strength, Ioffe Institute, Polytechnicheskaya St. 26, 
      St. Petersburg 194021, Russia.
FAU - Ivan'kova, Elena
AU  - Ivan'kova E
AUID- ORCID: 0000-0002-4823-0695
AD  - Institute of Macromolecular Compounds, Bol'shoy pr. 31, St. Petersburg 199004, 
      Russia.
FAU - Marikhin, Vyacheslav
AU  - Marikhin V
AD  - Laboratory of Physics of Strength, Ioffe Institute, Polytechnicheskaya St. 26, 
      St. Petersburg 194021, Russia.
FAU - Myasnikova, Liubov
AU  - Myasnikova L
AD  - Laboratory of Physics of Strength, Ioffe Institute, Polytechnicheskaya St. 26, 
      St. Petersburg 194021, Russia.
FAU - Novokshonova, Ludmila
AU  - Novokshonova L
AD  - Semenov Institute of Chemical Physics, Kosygina St. 4, Building 1, Moscow 119991, 
      Russia.
FAU - Radovanova, Elena
AU  - Radovanova E
AD  - Laboratory of Physics of Strength, Ioffe Institute, Polytechnicheskaya St. 26, 
      St. Petersburg 194021, Russia.
FAU - Starchak, Elena
AU  - Starchak E
AD  - Semenov Institute of Chemical Physics, Kosygina St. 4, Building 1, Moscow 119991, 
      Russia.
FAU - Ushakova, Tatiana
AU  - Ushakova T
AD  - Semenov Institute of Chemical Physics, Kosygina St. 4, Building 1, Moscow 119991, 
      Russia.
FAU - Yagovkina, Maria
AU  - Yagovkina M
AD  - Laboratory of Physics of Strength, Ioffe Institute, Polytechnicheskaya St. 26, 
      St. Petersburg 194021, Russia.
LA  - eng
GR  - agreement no. 075-15-2021-1349./the Ministry of Science and Higher Education of 
      the Russian Federation/
PT  - Journal Article
DEP - 20230913
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC10534811
OTO - NOTNLM
OT  - crystallinity
OT  - differential scanning calorimetry (DSC)
OT  - high-density polyethylene (HDPE)
OT  - lamella
OT  - long period
OT  - reactor powder
OT  - scanning electron microscopy (SEM)
OT  - shish kebab
OT  - small-angle X-ray scattering (SAXS)
OT  - wide-angle X-ray scattering (WAXS)
COIS- The authors declare no conflict of interest.
EDAT- 2023/09/28 06:43
MHDA- 2023/09/28 06:44
PMCR- 2023/09/13
CRDT- 2023/09/28 01:40
PHST- 2023/07/31 00:00 [received]
PHST- 2023/09/04 00:00 [revised]
PHST- 2023/09/09 00:00 [accepted]
PHST- 2023/09/28 06:44 [medline]
PHST- 2023/09/28 06:43 [pubmed]
PHST- 2023/09/28 01:40 [entrez]
PHST- 2023/09/13 00:00 [pmc-release]
AID - polym15183742 [pii]
AID - polymers-15-03742 [pii]
AID - 10.3390/polym15183742 [doi]
PST - epublish
SO  - Polymers (Basel). 2023 Sep 13;15(18):3742. doi: 10.3390/polym15183742.