Tunable Multiscale Nanoparticle Ordering by Polymer Crystallization

Dan Zhao, Vianney Gimenez-Pinto, Andrew M. Jimenez, Longxi Zhao, Jacques Jestin, Sanat K. Kumar, Brooke Kuei, Enrique D. Gomez, Aditya Shanker Prasad, Linda S. Schadler, Mohammad M. Khani, Brian C. Benicewicz

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

While ∼75% of commercially utilized polymers are semicrystalline, the generally low mechanical modulus of these materials, especially for those possessing a glass transition temperature below room temperature, restricts their use for structural applications. Our focus in this paper is to address this deficiency through the controlled, multiscale assembly of nanoparticles (NPs), in particular by leveraging the kinetics of polymer crystallization. This process yields a multiscale NP structure that is templated by the lamellar semicrystalline polymer morphology and spans NPs engulfed by the growing crystals, NPs ordered into layers in the interlamellar zone [spacing of O (10-100 nm)], and NPs assembled into fractal objects at the interfibrillar scale, O (1-10 μm). The relative fraction of NPs in this hierarchy is readily manipulated by the crystallization speed. Adding NPs usually increases the Young's modulus of the polymer, but the effects of multiscale ordering are nearly an order of magnitude larger than those for a state where the NPs are not ordered, i.e., randomly dispersed in the matrix. Since the material's fracture toughness remains practically unaffected in this process, this assembly strategy allows us to create high modulus materials that retain the attractive high toughness and low density of polymers.

Original languageEnglish (US)
Pages (from-to)751-758
Number of pages8
JournalACS Central Science
Volume3
Issue number7
DOIs
StatePublished - Jul 26 2017

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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    Zhao, D., Gimenez-Pinto, V., Jimenez, A. M., Zhao, L., Jestin, J., Kumar, S. K., Kuei, B., Gomez, E. D., Prasad, A. S., Schadler, L. S., Khani, M. M., & Benicewicz, B. C. (2017). Tunable Multiscale Nanoparticle Ordering by Polymer Crystallization. ACS Central Science, 3(7), 751-758. https://doi.org/10.1021/acscentsci.7b00157