Issue 11, 2012
From the journal:

Soft Matter

Isotactic polystyrene nanorods with gradient crystallite states

Hui Wu,a   Zhaohui Sub  and  Atsushi Takahara*acd  

* Corresponding authors

a Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Japan
E-mail: takahara@cstf.kyushu-u.ac.jp

b State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, P. R. China

c JST ERATO Takahara Soft Interfaces Project, CE80, 744 Motooka, Nishi-ku, Fukuoka, Japan

d International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Japan

Abstract

In this paper, isotactic polystyrene (iPS) nanorods with gradient crystallite distribution were demonstrated. The polymer nanorods with a diameter of 65 nm were prepared by melt-wetting the nanoporous alumina template with fractionated iPS melts. Spatial distribution of crystallinity and orientation of the polymer in the nanorods from top to bottom were analyzed by Fourier transform infrared spectroscopy. The crystallites with perpendicular orientation (c-axis perpendicular to the long axis of rod) increased from the top to the bottom of the nanorods due to crystallization initiated by nuclei formed in the bulk and subsequent crystallite growth constrained by the nanopores. This result offers a unique approach to design polymeric nanomaterials with gradient crystallite distribution for functional nanodevice applications.

Graphical abstract: Isotactic polystyrene nanorods with gradient crystallite states

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Article information

DOI
https://doi.org/10.1039/C2SM06896F
Article type
Paper
Submitted
05 Oct 2011
Accepted
04 Jan 2012
First published
07 Feb 2012

Soft Matter, 2012,8, 3180-3184

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Isotactic polystyrene nanorods with gradient crystallite states

H. Wu, Z. Su and A. Takahara, Soft Matter, 2012, 8, 3180 DOI: 10.1039/C2SM06896F

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