PMID- 26266528 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20151209 LR - 20150903 IS - 1520-5207 (Electronic) IS - 1520-5207 (Linking) VI - 119 IP - 35 DP - 2015 Sep 3 TI - Controlling Short-Range Interactions by Tuning Surface Chemistry in HDPE/Graphene Nanoribbon Nanocomposites. PG - 11867-78 LID - 10.1021/acs.jpcb.5b03558 [doi] AB - Unique dispersion states of nanoparticles in polymeric matrices have the potential to create composites with enhanced mechanical, thermal, and electrical properties. The present work aims to determine the state of dispersion from the melt-state rheological behavior of nanocomposites based on carbon nanotube and graphene nanoribbon (GNR) nanomaterials. GNRs were synthesized from nitrogen-doped carbon nanotubes via a chemical route using potassium permanganate and some second acids. High-density polyethylene (HDPE)/GNR nanocomposite samples were then prepared through a solution mixing procedure. Different nanocomposite dispersion states were achieved using different GNR synthesis methods providing different surface chemistry, interparticle interactions, and internal compartments. Prolonged relaxation of flow induced molecular orientation was observed due to the presence of both carbon nanotubes and GNRs. Based on the results of this work, due to relatively weak interactions between the polymer and the nanofillers, it is expected that short-range interactions between nanofillers play the key role in the final dispersion state. FAU - Sadeghi, Soheil AU - Sadeghi S AD - Polymer Processing Group, Department of Chemical and Petroleum Engineering, University of Calgary , 2500 University Dr, NW Calgary, AB T2N1N4, Canada. FAU - Zehtab Yazdi, Alireza AU - Zehtab Yazdi A AD - Polymer Processing Group, Department of Chemical and Petroleum Engineering, University of Calgary , 2500 University Dr, NW Calgary, AB T2N1N4, Canada. FAU - Sundararaj, Uttandaraman AU - Sundararaj U AD - Polymer Processing Group, Department of Chemical and Petroleum Engineering, University of Calgary , 2500 University Dr, NW Calgary, AB T2N1N4, Canada. LA - eng PT - Journal Article DEP - 20150825 PL - United States TA - J Phys Chem B JT - The journal of physical chemistry. B JID - 101157530 EDAT- 2015/08/13 06:00 MHDA- 2015/08/13 06:01 CRDT- 2015/08/13 06:00 PHST- 2015/08/13 06:00 [entrez] PHST- 2015/08/13 06:00 [pubmed] PHST- 2015/08/13 06:01 [medline] AID - 10.1021/acs.jpcb.5b03558 [doi] PST - ppublish SO - J Phys Chem B. 2015 Sep 3;119(35):11867-78. doi: 10.1021/acs.jpcb.5b03558. Epub 2015 Aug 25.