PMID- 33810111 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210408 IS - 2073-4360 (Electronic) IS - 2073-4360 (Linking) VI - 13 IP - 6 DP - 2021 Mar 22 TI - Mechanical, Wear and Thermal Behavior of Polyethylene Blended with Graphite Treated in Ball Milling. LID - 10.3390/polym13060975 [doi] LID - 975 AB - Additive manufacturing, civil, and biomechanical applications are among the most important sectors, where the filler's presence can significantly improve the quality of polymeric products blends. The high market demand of new low-cost material to be used as shock absorbers and mechanical joints arouses our curiosity to study a relatively common commercial polymer and filler. The possible improvement by blending high-density polyethylene (HDPE) and graphite was investigated for these sectors. To achieve this objective, we have prepared HDPE/graphite nanocomposites following mechanical treatment to understand which parameter provides the researched properties. As widely reported in the literature, milling treatment leads to the decrease of the particle size and the exfoliation of graphitic layers. Therefore, graphite has been previously treated with a ball mill for different times (1-16 h) to enhance its lubricating action. We checked an improvement in stiffness, yielding strength, thermal stability, and, in particularly, wear resistance that increased by 65% with respect to that of polyethylene (PE). A treatment time of eight hours in ball milling could be enough to give an appreciable improvement. The wear behavior of HDPE with treated graphite has not been deeply investigated so far, and it could be important because HDPE is considered a "carrier polymer" for different low-friction applications. FAU - Visco, Annamaria AU - Visco A AUID- ORCID: 0000-0003-1602-9361 AD - Department of Engineering, University of Messina, Contrada Di Dio, I-98166 Messina, Italy. AD - Institute for Polymers, Composites and Biomaterials-CNR IPCB, Via Paolo Gaifami 18, 95126 Catania, Italy. FAU - Grasso, Antonio AU - Grasso A AD - Department of Engineering, University of Messina, Contrada Di Dio, I-98166 Messina, Italy. AD - Institute for Polymers, Composites and Biomaterials-CNR IPCB, Via Paolo Gaifami 18, 95126 Catania, Italy. FAU - Recca, Giuseppe AU - Recca G AUID- ORCID: 0000-0002-5451-9954 AD - Institute for Polymers, Composites and Biomaterials-CNR IPCB, Via Paolo Gaifami 18, 95126 Catania, Italy. FAU - Carbone, Domenico Carmelo AU - Carbone DC AUID- ORCID: 0000-0002-4349-0113 AD - Institute for Polymers, Composites and Biomaterials-CNR IPCB, Via Paolo Gaifami 18, 95126 Catania, Italy. FAU - Pistone, Alessandro AU - Pistone A AUID- ORCID: 0000-0001-9298-944X AD - Department of Engineering, University of Messina, Contrada Di Dio, I-98166 Messina, Italy. LA - eng PT - Journal Article DEP - 20210322 PL - Switzerland TA - Polymers (Basel) JT - Polymers JID - 101545357 PMC - PMC8004640 OTO - NOTNLM OT - HDPE OT - ball-milled graphite OT - blends OT - mechanical test OT - tensile OT - torque OT - wear test COIS- The authors declare no conflict of interest. EDAT- 2021/04/04 06:00 MHDA- 2021/04/04 06:01 PMCR- 2021/03/22 CRDT- 2021/04/03 01:35 PHST- 2021/02/27 00:00 [received] PHST- 2021/03/15 00:00 [revised] PHST- 2021/03/17 00:00 [accepted] PHST- 2021/04/03 01:35 [entrez] PHST- 2021/04/04 06:00 [pubmed] PHST- 2021/04/04 06:01 [medline] PHST- 2021/03/22 00:00 [pmc-release] AID - polym13060975 [pii] AID - polymers-13-00975 [pii] AID - 10.3390/polym13060975 [doi] PST - epublish SO - Polymers (Basel). 2021 Mar 22;13(6):975. doi: 10.3390/polym13060975.