PMID- 37447525
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230718
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 15
IP  - 13
DP  - 2023 Jun 29
TI  - Hydrogenation of High-Density Polyethylene during Decompression of Pressurized 
      Hydrogen at 90 MPa: A Molecular Perspective.
LID - 10.3390/polym15132880 [doi]
LID - 2880
AB  - To investigate changes in the physical and chemical properties of high-density 
      polyethylene (HDPE) upon the rapid release of hydrogen gas at a pressure of 90 
      MPa, several characterization techniques have been employed, including optical 
      microscopy, scanning electron microscopy, X-ray diffraction, differential 
      scanning thermal analysis, and attenuated total reflectance Fourier-transform 
      infrared spectroscopy. The results showed that both physical and chemical changes 
      occurred in HDPE upon a rapid release of hydrogen gas. Physically, a partial 
      hexagonal phase was formed within the amorphous region, and the overall 
      crystallinity of HDPE decreased. Chemically, hydrogenation occurred, leading to 
      the addition of hydrogen atoms to the polymer chains. Oxidation also occurred, 
      for example, the formation of ester -C=O groups. Crosslinking and an increase in 
      -CH(3) end termination were also observed. These changes suggest that structural 
      transformation and chemical modification of HDPE occurred upon the rapid release 
      of hydrogen gas.
FAU - Kim, Mina
AU  - Kim M
AUID- ORCID: 0009-0005-4087-8728
AD  - Grad. School of Chemical Engineering, Chosun University, Chosundae-5-gil, 
      Dong-gu, Gwangju 61452, Republic of Korea.
FAU - Lee, Chang Hoon
AU  - Lee CH
AD  - Department of Biochemical Engineering, Chosun University, Chosundae-5-gil, 
      Dong-gu, Gwangju 61452, Republic of Korea.
LA  - eng
PT  - Journal Article
DEP - 20230629
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC10347011
OTO - NOTNLM
OT  - 90 MPa hydrogen pressure
OT  - hydrogenation
OT  - partial hexagonal phase
COIS- The authors declare no conflict of interests.
EDAT- 2023/07/14 13:07
MHDA- 2023/07/14 13:08
PMCR- 2023/06/29
CRDT- 2023/07/14 01:23
PHST- 2023/06/02 00:00 [received]
PHST- 2023/06/26 00:00 [revised]
PHST- 2023/06/27 00:00 [accepted]
PHST- 2023/07/14 13:08 [medline]
PHST- 2023/07/14 13:07 [pubmed]
PHST- 2023/07/14 01:23 [entrez]
PHST- 2023/06/29 00:00 [pmc-release]
AID - polym15132880 [pii]
AID - polymers-15-02880 [pii]
AID - 10.3390/polym15132880 [doi]
PST - epublish
SO  - Polymers (Basel). 2023 Jun 29;15(13):2880. doi: 10.3390/polym15132880.