PMID- 34753362
OWN - NLM
STAT- MEDLINE
DCOM- 20220517
LR  - 20220517
IS  - 1096-3669 (Electronic)
VI  - 40
IP  - 7
DP  - 2022 Jul
TI  - Temperature effects on ageing properties and diffusivity of a HDPE GM in 
      landfill.
PG  - 980-986
LID - 10.1177/0734242X211057014 [doi]
AB  - High-density polyethylene (HDPE) geomembranes (GMs) play a crucial role in 
      preventing the leakage and migration of pollutants. GM service life and ageing 
      properties are the main concerns for the choice of materials. However, it is not 
      clear how the mechanical properties and anti-fouling performance of geomembranes 
      change with ageing time. To solve this problem, a HDPE GM was selected for 
      testing under exposed air condition. The tests included oxidation induction time 
      (OIT), melt flow index (MFI), tensile properties and diffusivity under four 
      temperature conditions for 1(1/2) years. The test results showed that the GM has 
      higher OIT degradation rates. Stage I - depletion of antioxidants occurred at 
      only 10 years for the GM, which was approximately 1/4 that of the GM-GSE. The GM 
      engineering properties index showed the same changes as those of the GM-GSE. 
      However, MI rapidly decreased with the incubation time. The molecular weight 
      degradation of the GM was approximately 57% and far greater than that of GM-GSE 
      after 15 months, but the tensile properties of the two GMs showed little change. 
      The diffusion coefficient D(i) of GM increases gradually with the increase of 
      temperature in methane and trichloromethane. Under the same conditions, the 
      diffusion coefficient D(i) of the GM in methane is significantly higher than that 
      in trichloromethane, indicating that the GM has better barrier to 
      trichloromethane.
FAU - Wang, Shengwei
AU  - Wang S
AUID- ORCID: 0000-0003-1073-2910
AD  - Institute of Geotechnical Engineering, Yangzhou University, Yangzhou, China.
FAU - Guo, Tao
AU  - Guo T
AD  - Institute of Geotechnical Engineering, Yangzhou University, Yangzhou, China.
FAU - Tian, Huan
AU  - Tian H
AD  - Institute of Geotechnical Engineering, Yangzhou University, Yangzhou, China.
FAU - Li, Zhigang
AU  - Li Z
AD  - Institute of Geotechnical Engineering, Yangzhou University, Yangzhou, China.
FAU - Fei, Kang
AU  - Fei K
AD  - Institute of Geotechnical Engineering, Yangzhou University, Yangzhou, China.
LA  - eng
PT  - Journal Article
DEP - 20211109
PL  - England
TA  - Waste Manag Res
JT  - Waste management & research : the journal of the International Solid Wastes and 
      Public Cleansing Association, ISWA
JID - 9881064
RN  - 7V31YC746X (Chloroform)
RN  - 9002-88-4 (Polyethylene)
RN  - OP0UW79H66 (Methane)
SB  - IM
MH  - *Chloroform
MH  - Methane
MH  - *Polyethylene
MH  - Temperature
MH  - Waste Disposal Facilities
OTO - NOTNLM
OT  - HDPE GM
OT  - Landfill
OT  - ageing properties
OT  - diffusivity
OT  - temperature
EDAT- 2021/11/11 06:00
MHDA- 2022/05/18 06:00
CRDT- 2021/11/10 05:27
PHST- 2021/11/11 06:00 [pubmed]
PHST- 2022/05/18 06:00 [medline]
PHST- 2021/11/10 05:27 [entrez]
AID - 10.1177/0734242X211057014 [doi]
PST - ppublish
SO  - Waste Manag Res. 2022 Jul;40(7):980-986. doi: 10.1177/0734242X211057014. Epub 
      2021 Nov 9.