PMID- 36080682 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220913 IS - 2073-4360 (Electronic) IS - 2073-4360 (Linking) VI - 14 IP - 17 DP - 2022 Sep 1 TI - Optimization of the Physical Properties of HDPE/PU Blends through Improved Compatibility and Electron Beam Crosslinking. LID - 10.3390/polym14173607 [doi] LID - 3607 AB - Polymer blending is a method in which polymers with different properties are mixed so that each advantage appears in one polymer blend. Improved thermal and mechanical properties of blends can be prepared by blending with high-density polyethylene (HDPE) of a non-polar polymer and polyurethane (PU) of a polar polymer. However, a compatibilizer is required because it has the disadvantage that blending has low miscibility due to the different phases. In this study, HDPE/PU blends with new and excellent physical properties were developed through optimal composition with improved compatibility between the HDPE and PU. In addition, the effects of improving the physical properties through electron-beam crosslinking were confirmed. In general, a crosslinking structure of HDPE is formed by electron beam irradiation to increase its thermal stability and strength, but its elongation is rapidly decreased. In particular, the elongation of HDPE irradiated at 100 kGy was about 110%, which was decreased about five times compared to unirradiated HDPE (510%). However, the HDPE/PU blend with improved compatibility (PU 30) showed an elongation of about 450% while maintaining excellent strength (22.5 MPa), which was increased by about four times compared to the HDPE irradiated at 100 kGy. In particular, the thermal stability of PU 30 irradiated at 100 kGy at a high temperature (180 degrees C) was improved more than six times compared to the HDPE. Therefore, it is possible to develop HDPE/PU blends with new and excellent physical properties by improving compatibility and using electron beam crosslinking technology. FAU - Jeong, Jin-Oh AU - Jeong JO AUID- ORCID: 0000-0001-6685-8665 AD - Wake Forest Institute for Regenerative Medicine (WFIRM), Wake Forest School of Medicine, Winston-Salem, NC 27157, USA. FAU - Oh, Yong-Hyeon AU - Oh YH AD - Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute (KAERI), Jeongeup-si 56212, Korea. FAU - Jeong, Sung-In AU - Jeong SI AD - Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute (KAERI), 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 (KAERI), Jeongeup-si 56212, Korea. LA - eng GR - NRF- 2020M2D8A1045967/National Research Foundation (NRF) of Korea/ PT - Journal Article DEP - 20220901 PL - Switzerland TA - Polymers (Basel) JT - Polymers JID - 101545357 PMC - PMC9460743 OTO - NOTNLM OT - compatibilizer OT - composites OT - crosslinking OT - electron beam OT - polymer blending COIS- The authors declare no conflict of interest. EDAT- 2022/09/10 06:00 MHDA- 2022/09/10 06:01 PMCR- 2022/09/01 CRDT- 2022/09/09 01:30 PHST- 2022/08/03 00:00 [received] PHST- 2022/08/23 00:00 [revised] PHST- 2022/08/30 00:00 [accepted] PHST- 2022/09/09 01:30 [entrez] PHST- 2022/09/10 06:00 [pubmed] PHST- 2022/09/10 06:01 [medline] PHST- 2022/09/01 00:00 [pmc-release] AID - polym14173607 [pii] AID - polymers-14-03607 [pii] AID - 10.3390/polym14173607 [doi] PST - epublish SO - Polymers (Basel). 2022 Sep 1;14(17):3607. doi: 10.3390/polym14173607.