Tuning the Properties of Nanocomposites by Trapping Them in Deep Metastable States

Zhou, Zhengping; Bocharova, Vera; Kumar, Rajeev; Genix, Anne-Caroline; Carroll, Bobby; Samanta, Subarna; Popov, Ivan; Young-Gonzales, Amanda; Kisliuk, Alexander; Jeong, Seung Pyo; Ilavsky, Jan; Sokolov, Alexei P.

doi:10.1021/acsapm.1c01623

Tuning the Properties of Nanocomposites by Trapping Them in Deep Metastable States

Journal Article · Tue Apr 12 00:00:00 EDT 2022 · ACS Applied Polymer Materials

DOI:https://doi.org/10.1021/acsapm.1c01623· OSTI ID:1871327

^[1]; ^[1]; ^[1]; Genix, Anne-Caroline ^[2]; Carroll, Bobby ^[3]; Samanta, Subarna ^[3]; ^[1]; Young-Gonzales, Amanda ^[3]; Kisliuk, Alexander ^[1]; ^[1]; Ilavsky, Jan ^[4]; ^[5]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Montpellier Univ. 2 (France)
Univ. of Tennessee, Knoxville, TN (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)

We report the interfacial region formed in a polymer matrix around nanoparticles (NPs) controls many macroscopic properties of polymer nanocomposites (PNCs). However, understanding the factors controlling structure and properties of interfacial region remains a challenge. We demonstrated that the initial trapping of polymer chains at surfaces of NPs in solution strongly affects the macroscopic properties of PNCs. The most surprising result is that the differences in properties of PNCs persist even after an extremely long thermal annealing time. We ascribe the observed changes to the formation of interfacial layer that is trapped in a deep metastable state already in solution. Furthermore, presented analysis suggests that PNC equilibration time is defined by the chain desorption time that can be extremely long and, in some cases, even not accessible on a reasonable experimental time scale. These results highlight the importance of polymer solution concentrations on the formation of interfacial layer and the macroscopic properties of PNCs.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)

Sponsoring Organization:: National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division

Grant/Contract Number:: AC02-05CH11231; AC02-06CH11357; AC05-00OR22725

OSTI ID:: 1871327

Alternate ID(s):: OSTI ID: 1883883

Journal Information:: ACS Applied Polymer Materials, Journal Name: ACS Applied Polymer Materials Journal Issue: 5 Vol. 4; ISSN 2637-6105

Publisher:: ACS PublicationsCopyright Statement

Country of Publication:: United States

Language:: English

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