PMID- 33339384 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240330 IS - 2073-4360 (Electronic) IS - 2073-4360 (Linking) VI - 12 IP - 12 DP - 2020 Dec 16 TI - Influences of Absorbed Dose Rate on the Mechanical Properties and Fiber-Matrix Interaction of High-Density Polyethylene-Based Carbon Fiber Reinforced Thermoplastic Irradiated by Electron-Beam. LID - 10.3390/polym12123012 [doi] LID - 3012 AB - In this study, a high-density polyethylene (HDPE)-based carbon fiber-reinforced thermoplastic (CFRTP) was irradiated by an electron-beam. To assess the absorbed dose rate influence on its mechanical properties, the beam energy and absorbed dose were fixed, while the absorbed dose rates were varied. The tensile strength (TS) and Young's modulus (YM) were evaluated. The irradiated CFRTP TS increased at absorbed dose rates of up to 6.8 kGy/s and decreased at higher rates. YM showed no meaningful differences. For CFRTPs constituents, the carbon fiber (CF) TS gradually increased, while the HDPE TS decreased slightly as the absorbed dose rates increased. The OH intermolecular bond was strongly developed in irradiated CFRTP at low absorbed dose rates and gradually declined when increasing those rates. X-ray photoelectron spectroscopy analysis revealed that the oxygen content of irradiated CFRTPs decreased with increasing absorbed dose rate due to the shorter irradiation time at higher dose rates. In conclusion, from the TS viewpoint, opposite effects occurred when increasing the absorbed dose rate: a favorable increase in CF TS and adverse decline of attractive hydrogen bonding interactions between HDPE and CF for CFRTPs TS. Therefore, the irradiated CFRTP TS was maximized at an optimum absorbed dose rate of 6.8 kGy/s. FAU - Park, Se Kye AU - Park SK AD - Daegyeong Division, Korea Institute of Industrial Technology, Yeongcheon 38822, Gyeongsangbuk-do, Korea. AD - Department of Polymer Science and Engineering, Kyungpook National University, Daegu 41566, Gyeongsangbuk-do, Korea. FAU - Choi, Dong Yun AU - Choi DY AUID- ORCID: 0000-0001-8480-0539 AD - Daegyeong Division, Korea Institute of Industrial Technology, Yeongcheon 38822, Gyeongsangbuk-do, Korea. FAU - Choi, Du Young AU - Choi DY AD - Carbon Materials Application R&D Group, Korea Institute of Industrial Technology, Jeonju 54853, Jeollabuk-do, Korea. FAU - Lee, Dong Yun AU - Lee DY AUID- ORCID: 0000-0003-4998-2116 AD - Department of Polymer Science and Engineering, Kyungpook National University, Daegu 41566, Gyeongsangbuk-do, Korea. FAU - Yoo, Seung Hwa AU - Yoo SH AD - Department of Quantum System Engineering, College of Engineering, Jeonbuk National University, Jeonju 54896, Jeollabuk-do, Korea. LA - eng PT - Journal Article DEP - 20201216 PL - Switzerland TA - Polymers (Basel) JT - Polymers JID - 101545357 PMC - PMC7765887 OTO - NOTNLM OT - absorbed dose rate OT - carbon fiber-reinforced thermoplastic OT - electron-beam irradiation OT - fiber-matrix interaction OT - tensile strength COIS- The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results. EDAT- 2020/12/20 06:00 MHDA- 2020/12/20 06:01 PMCR- 2020/12/16 CRDT- 2020/12/19 01:02 PHST- 2020/11/14 00:00 [received] PHST- 2020/12/10 00:00 [revised] PHST- 2020/12/14 00:00 [accepted] PHST- 2020/12/19 01:02 [entrez] PHST- 2020/12/20 06:00 [pubmed] PHST- 2020/12/20 06:01 [medline] PHST- 2020/12/16 00:00 [pmc-release] AID - polym12123012 [pii] AID - polymers-12-03012 [pii] AID - 10.3390/polym12123012 [doi] PST - epublish SO - Polymers (Basel). 2020 Dec 16;12(12):3012. doi: 10.3390/polym12123012.