PMID- 34451369
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20240403
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 13
IP  - 16
DP  - 2021 Aug 23
TI  - Radiation-Based Crosslinking Technique for Enhanced Thermal and Mechanical 
      Properties of HDPE/EVA/PU Blends.
LID - 10.3390/polym13162832 [doi]
LID - 2832
AB  - Crosslinking of polyolefin-based polymers can improve their thermal and 
      mechanical properties, which can then be used in various applications. 
      Radiation-induced crosslinking can be done easily and usefully by irradiation 
      without a crosslinking agent. In addition, polymer blending can improve thermal 
      and mechanical properties, and chemical resistance, compared to conventional 
      single polymers. In this study, high-density polyethylene (HDPE)/ethylene vinyl 
      acetate (EVA)/polyurethane (PU) blends were prepared by radiation crosslinking to 
      improve the thermal and mechanical properties of HDPE. This is because HDPE, a 
      polyolefin-based polymer, has the weaknesses of low thermal resistance and 
      flexibility, even though it has good mechanical strength and machinability. In 
      contrast, EVA has good flexibility and PU has excellent thermal properties and 
      wear resistance. The morphology and mechanical properties (e.g., tensile and 
      flexure strength) were characterized using scanning electron microscopy (SEM) and 
      a universal testing machine (UTM). The gel fraction, thermal shrinkage, and 
      abrasion resistance of samples were confirmed. In particular, after storing at 
      180  degrees C for 1 h, the crosslinked HDPE-PU-EVA blends exhibited ~4-times better 
      thermal stability compared to non-crosslinked HDPE. When subjected to a radiation 
      dose of 100 kGy, the strength of HDPE increased, but the elongation sharply 
      decreased (80%). On the other hand, the strength of the HDPE-PU-EVA blends was 
      very similar to that of HDPE, and the elongation was more than 3-times better 
      (320%). Finally, the abrasion resistance of crosslinked HDPE-PU-EVA was ~9-times 
      better than the crosslinked HDPE. Therefore, this technology can be applied to 
      various polymer products requiring high heat resistance and flexibility, such as 
      electric cables and industrial pipes.
FAU - Lee, Jang-Gun
AU  - Lee JG
AD  - Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, 
      Jeongeup-si 56212, Korea.
FAU - Jeong, Jin-Oh
AU  - Jeong JO
AD  - Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, 
      Jeongeup-si 56212, Korea.
FAU - Jeong, Sung-In
AU  - Jeong SI
AD  - Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, 
      Jeongeup-si 56212, Korea.
FAU - Park, Jong-Seok
AU  - Park JS
AUID- ORCID: 0000-0002-4389-1590
AD  - Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, 
      Jeongeup-si 56212, Korea.
LA  - eng
GR  - NRF-2020M2D8A1045967/National Research Foundation of Korea/
PT  - Journal Article
DEP - 20210823
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC8401421
OTO - NOTNLM
OT  - heat resistance
OT  - mechanical property
OT  - polyethylene
OT  - polymer blending
OT  - polyurethane
OT  - radiation crosslinking
COIS- The authors declare no conflict of interest.
EDAT- 2021/08/29 06:00
MHDA- 2021/08/29 06:01
PMCR- 2021/08/23
CRDT- 2021/08/28 01:03
PHST- 2021/08/05 00:00 [received]
PHST- 2021/08/19 00:00 [revised]
PHST- 2021/08/21 00:00 [accepted]
PHST- 2021/08/28 01:03 [entrez]
PHST- 2021/08/29 06:00 [pubmed]
PHST- 2021/08/29 06:01 [medline]
PHST- 2021/08/23 00:00 [pmc-release]
AID - polym13162832 [pii]
AID - polymers-13-02832 [pii]
AID - 10.3390/polym13162832 [doi]
PST - epublish
SO  - Polymers (Basel). 2021 Aug 23;13(16):2832. doi: 10.3390/polym13162832.