Nanostructures and Dynamics of Macromolecules Bound to Attractive Filler Surfaces

Published

August 18, 2015

Author(s)

Naisheng Jiang, Maya K. Endoh, Tadanori Koga, Tomomi Masui, Hiroyuki Kishimoto, Michihiro Nagao, Sushil K. Satija, Takashi Taniguchi

Abstract

We report in-situ structures and dynamics of polybutadiene (PB) chains bound to carbon black (CB) fillers (the so-called "bound polymer layer (BPL)") in a good solvent. The BPL on the CB fillers were extracted by solvent leaching of a CB-filled PB compound and subsequently dispersed in deuterated toluene to label the BPL for small-angle neutron scattering and neutron spin echo techniques. The results demonstrate that the BPL is composed of two regions regardless of molecular weights of PB: the inner unswollen region of approximately equal to}0.5 nm thick and outer swollen region where the polymer chains display a parabolic profile with a diffuse tail. In addition, the results show that the dynamics of the swollen bound chains can be explained by the so-called "breathing mode" and is generalized by the thickness of the swollen BPL.

Citation

ACS Macro Letters

Volume

4

Issue

8

Pub Type

Journals

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Keywords

polymer, structure, dynamics, nanocomposite, breathing mode

Citation

Jiang, N. , Endoh, M. , Koga, T. , Masui, T. , Kishimoto, H. , Nagao, M. , Satija, S. and Taniguchi, T. (2015), Nanostructures and Dynamics of Macromolecules Bound to Attractive Filler Surfaces, ACS Macro Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=918297 (Accessed December 22, 2024)