ITP OpenIR  > SCI期刊论文
Varol, H. Samet; Srivastava, Anchit2; Kumar, Sachin; Bonn, Mischa; Meng, Fanlong3; Parekh, Sapun H.
Bridging chains mediate nonlinear mechanics of polymer nanocomposites under cyclic deformation
Source PublicationPOLYMER
Language英语
KeywordREINFORCEMENT ELASTOMERS MODEL SOFT SIZE
AbstractElastomer-based nanocomposites, mixtures of elastomeric rubber with hard nanoparticles, generally exhibit strain stiffening under large strains while also showing strain softening at low strain during large cyclic deformations due to the Mullins Effect. Numerous studies have documented the Mullins effect over the last 50 years, and many models have been developed to explain (and predict) the Mullins effect as it is closely related to material failure. Even with this rich history, relatively few studies have connected experimentally measured changes in nanocomposite chain structure with nonlinear strain hardening and nanofiller dispersion. In this work, we quantify the strain hardening mechanics, and chain anisotropy in situ in silica-filled acrylonitrile butadiene rubber (NBR) nanocomposites under cyclic tensile loading. Macroscopic strain hardening and molecular chain anisotropy increased after the first loading cycle, as a strong Mullins effect appeared, for nanocomposites with sufficient filler volume fraction. In composites with low filler content, we observed little increase in strain hardening or chain anisotropy and a barely-visible Mullins effect. Our results provide strong experimental support that chain delamination from the filler surface is related to the Mullins effect in nanocomposite materials.
2020
ISSN0032-3861
Volume200Pages:122529
Cooperation Status国际
Subject AreaPolymer Science
MOST Discipline CataloguePolymer Science
DOI10.1016/j.polymer.2020.122529
Indexed BySCIE
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/27170
CollectionSCI期刊论文
Affiliation1.[Varol, H. Samet; Srivastava, Anchit; Kumar, Sachin; Bonn, Mischa; Parekh, Sapun H.] Max Planck Inst Polymer Res, Dept Mol Spect, Ackermannweg 10, D-55128 Mainz, Germany
2.Tech Univ Darmstadt, Ernst Berl Inst Tech & Makromol Chem, Alarich Weiss Str 12, D-64287 Darmstadt, Germany
3.Max Planck Inst Sci Light, Staudtstr 2, D-91058 Erlangen, Germany
4.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
5.Parekh, Sapun H.] Univ Texas Austin, Dept Biomed Engn, 107 W Dean Keeton Rd, Austin, TX 78712 USA
Recommended Citation
GB/T 7714
Varol, H. Samet,Srivastava, Anchit,Kumar, Sachin,et al. Bridging chains mediate nonlinear mechanics of polymer nanocomposites under cyclic deformation[J]. POLYMER,2020,200:122529.
APA Varol, H. Samet,Srivastava, Anchit,Kumar, Sachin,Bonn, Mischa,Meng, Fanlong,&Parekh, Sapun H..(2020).Bridging chains mediate nonlinear mechanics of polymer nanocomposites under cyclic deformation.POLYMER,200,122529.
MLA Varol, H. Samet,et al."Bridging chains mediate nonlinear mechanics of polymer nanocomposites under cyclic deformation".POLYMER 200(2020):122529.
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