PMID- 29427934 OWN - NLM STAT- MEDLINE DCOM- 20190618 LR - 20190618 IS - 1878-0180 (Electronic) IS - 1878-0180 (Linking) VI - 80 DP - 2018 Apr TI - Assessment of nanoscopic dynamic mechanical properties and B-C-N triad effect on MWCNT/h-BNNP nanofillers reinforced HDPE hybrid composite using oscillatory nanoindentation: An insight into medical applications. PG - 180-188 LID - S1751-6161(18)30040-7 [pii] LID - 10.1016/j.jmbbm.2018.01.027 [doi] AB - A thrust on improvement of different properties of polymer has taken a contemporary route with advent of nanofillers. Although several nanofillers are existent; MultiWalled Carbon Nanotubes- (MWCNTs) and h-Boron Nitride nanoplatelets-(h-BNNPs) unique combination of 1D and 2D dimensional geometry aids an advantage of B-C-N triad elemental effects on properties of tested samples. The current study aims to investigate the effects of MWCNT and h-BNNP reinforcement in High Density Polyethylene (HDPE) for high load bearing areas of medical applications requiring both elastic and viscous behavior. The results were analyzed keeping a view of its application in areas like HDPE based fracture fixation plates, acetabular cups and others. The composite and hybrid samples with different loadings were prepared after surface modification of nanofillers by mechanical mixing and molding technique. The dynamic nano-mechanical properties like storage modulus, loss modulus and tan delta were assessed for each sample during frequency swept from 10 to 220 Hz. The viscoelastic properties like h(c)/h(m), H/E, elastic-plastic deformation were investigated and evaluated. At a frequency of 10 Hz, the storage and loss modulus of 0.1 CNT increased by 37.56% and decreased by 23.52% respectively on comparison with pure HDPE. This infers a good elastic as well as viscous behavior. Overall elastic behavior of 0.1 CNT was confirmed from tan delta evaluation. The interaction between B-C-N elemental triad had significant effect on creep strength, visco-damping property (h(c)/h(m) and H/E), elastic plastic displacement and pile-up and sink-in behavior. Highest creep strength and visco-damping property was exhibited by 0.25 CNT/0.15 BNNP hybrid. The elastic-plastic displacement of hybrid composite was noted as least, which decreased by 30% on comparison with pure HDPE. It can be inferred that presence of 1D-MWCNT and 2D-h-BNNP had significant effect on important dynamic viscoelastic and creep properties of HDPE based hybrid composites. CI - Copyright (c) 2018 Elsevier Ltd. All rights reserved. FAU - Badgayan, Nitesh Dhar AU - Badgayan ND AD - Department of Mechanical Engineering, North Eastern Regional Institute of Science and Technology, Nirjuli, Arunachal Pradesh 791109, India. FAU - Sahu, Santosh Kumar AU - Sahu SK AD - Department of Mechanical Engineering, North Eastern Regional Institute of Science and Technology, Nirjuli, Arunachal Pradesh 791109, India; Department of Mechanical Engineering, National Institute of Science and Technology, Berhampur, Odisha 761008, India. FAU - Samanta, Sutanu AU - Samanta S AD - Department of Mechanical Engineering, North Eastern Regional Institute of Science and Technology, Nirjuli, Arunachal Pradesh 791109, India. FAU - Rama Sreekanth, P S AU - Rama Sreekanth PS AD - Department of Mechanical Engineering, Vellore Institute of Technology - AP University, Inavolu, Amaravati, Andhra Pradesh 522237, India. Electronic address: happyshrikanth@gmail.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180202 PL - Netherlands TA - J Mech Behav Biomed Mater JT - Journal of the mechanical behavior of biomedical materials JID - 101322406 RN - 0 (Composite Resins) RN - 9002-88-4 (Polyethylene) SB - IM MH - *Composite Resins MH - Materials Testing MH - *Nanocomposites MH - *Polyethylene MH - Weight-Bearing OTO - NOTNLM OT - Creep OT - MWCNT OT - Nanoindentation OT - Polymer-matrix composites (PMCs) OT - Transmission electron microscopy (TEM) OT - h-BNNP EDAT- 2018/02/11 06:00 MHDA- 2019/06/19 06:00 CRDT- 2018/02/11 06:00 PHST- 2017/11/22 00:00 [received] PHST- 2018/01/23 00:00 [revised] PHST- 2018/01/26 00:00 [accepted] PHST- 2018/02/11 06:00 [pubmed] PHST- 2019/06/19 06:00 [medline] PHST- 2018/02/11 06:00 [entrez] AID - S1751-6161(18)30040-7 [pii] AID - 10.1016/j.jmbbm.2018.01.027 [doi] PST - ppublish SO - J Mech Behav Biomed Mater. 2018 Apr;80:180-188. doi: 10.1016/j.jmbbm.2018.01.027. Epub 2018 Feb 2.