PMID- 33944689
OWN - NLM
STAT- MEDLINE
DCOM- 20220907
LR  - 20220907
IS  - 1479-487X (Electronic)
IS  - 0959-3330 (Linking)
VI  - 43
IP  - 21
DP  - 2022 Sep
TI  - High-density polyethylene composite filled with red mud: effect of coupling agent 
      on mechanical and thermal properties.
PG  - 3283-3294
LID - 10.1080/09593330.2021.1921047 [doi]
AB  - In this study, red mud (RM) was modified with titanate coupling agent 
      (triisostearoyl isopropoxy titanate, KR-TTS), and then the modified RM was melted 
      blending with high-density polyethylene (HDPE) to prepare HDPE-based composite. 
      The action mechanism of KR-TTS on the properties of HDPE composites was analysed 
      combining with the movement mode of polyethylene macromolecular chain segments. 
      The entanglement and mechanical interlocking of long alkyl chains of titanate 
      coupling agent and the polyethylene molecular chains occurs in modified RM/HDPE 
      composite, reflected by fracture morphology within tension process. The stronger 
      interface interaction results in a decrease of polyethylene molecular chain 
      segments motion under external loading, externally expressed as higher tensile 
      strength and tensile modulus as well as storage modulus. Meanwhile, KR-TTS 
      imparts modified RM/HDPE composite with higher elongation at break of uniaxial 
      tension and lower damping ratio. The impact strength presents an improvement from 
      5.62 kJ/m(2) of RM/HDPE composite to 6.56 kJ/m(2) of modified RM/HDPE composite 
      due to stronger interface strength. And modified RM/HDPE composite appears higher 
      thermal stability, attributed to better particles dispersion and higher interface 
      adhesion. Differential scanning calorimetric analysis shows that with the 
      addition of coupling agent, the melt enthalpy of modified RM/HDPE composite 
      decreases, indicating a decrement in the crystallinity of polyethylene composites 
      (from 70.2% of RM/HDPE to 63.1% of modified RM/HDPE), resulted from the retarded 
      stacking speed of chain segments into the crystal lattice during crystal growth.
FAU - Ding, Chong
AU  - Ding C
AD  - Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid 
      Wastes, National Circular Economy Engineering Laboratory, National Laboratory of 
      Mineral Materials, School of Materials Science and Technology, China University 
      of Geosciences (Beijing), Beijing, People's Republic of China.
FAU - Zhang, Youpeng
AU  - Zhang Y
AD  - Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid 
      Wastes, National Circular Economy Engineering Laboratory, National Laboratory of 
      Mineral Materials, School of Materials Science and Technology, China University 
      of Geosciences (Beijing), Beijing, People's Republic of China.
FAU - Di, Xiangyun
AU  - Di X
AD  - Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid 
      Wastes, National Circular Economy Engineering Laboratory, National Laboratory of 
      Mineral Materials, School of Materials Science and Technology, China University 
      of Geosciences (Beijing), Beijing, People's Republic of China.
FAU - Zhang, Na
AU  - Zhang N
AD  - Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid 
      Wastes, National Circular Economy Engineering Laboratory, National Laboratory of 
      Mineral Materials, School of Materials Science and Technology, China University 
      of Geosciences (Beijing), Beijing, People's Republic of China.
FAU - Zhang, Yihe
AU  - Zhang Y
AD  - Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid 
      Wastes, National Circular Economy Engineering Laboratory, National Laboratory of 
      Mineral Materials, School of Materials Science and Technology, China University 
      of Geosciences (Beijing), Beijing, People's Republic of China.
FAU - Wang, Xinke
AU  - Wang X
AD  - School of Earth Sciences and Resources, China University of Geosciences, Beijing, 
      People's Republic of China.
LA  - eng
PT  - Journal Article
DEP - 20210512
PL  - England
TA  - Environ Technol
JT  - Environmental technology
JID - 9884939
RN  - 9002-88-4 (Polyethylene)
SB  - IM
MH  - *Polyethylene/chemistry
MH  - Tensile Strength
OTO - NOTNLM
OT  - Surface modification
OT  - high-density polyethylene
OT  - interface properties
OT  - red mud
OT  - titanate coupling agent
EDAT- 2021/05/05 06:00
MHDA- 2022/09/08 06:00
CRDT- 2021/05/04 12:25
PHST- 2021/05/05 06:00 [pubmed]
PHST- 2022/09/08 06:00 [medline]
PHST- 2021/05/04 12:25 [entrez]
AID - 10.1080/09593330.2021.1921047 [doi]
PST - ppublish
SO  - Environ Technol. 2022 Sep;43(21):3283-3294. doi: 10.1080/09593330.2021.1921047. 
      Epub 2021 May 12.