Preparation of microporous carbon materials via in-depth sulfonation and stabilization of polyethylene

Li, Chengpeng, Zhu, Haijin, Salim, Nisa V., Fox, Bronwyn L. and Hameed, Nishar 2016, Preparation of microporous carbon materials via in-depth sulfonation and stabilization of polyethylene, Polymer degradation and stability, vol. 134, pp. 272-283, doi: 10.1016/j.polymdegradstab.2016.10.019.

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Title Preparation of microporous carbon materials via in-depth sulfonation and stabilization of polyethylene
Author(s) Li, Chengpeng
Zhu, HaijinORCID iD for Zhu, Haijin
Salim, Nisa V.
Fox, Bronwyn L.
Hameed, Nishar
Journal name Polymer degradation and stability
Volume number 134
Start page 272
End page 283
Total pages 12
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-12
ISSN 0141-3910
Keyword(s) Science & Technology
Physical Sciences
Polymer Science
Microporous carbon
Summary Microporous carbon material was fabricated via the in-depth sulfonation and carbonization of commercial polyethylene (PE) pellets for the first time. The change in thermal-stability, chemical structure, crystallinity and morphology of PE during the fabrication process was systematically analyzed. Porous polyethylene (PPE) clumps were firstly fabricated in a toluene/water mixed system via reprecipitation. Due to the efficient and homogenous sulfonation of PPE, the thermal-stability of sulfonated PE was improved significantly, with a weight retention as high as 51.9% at 700 °C. Sulfonation lead to the appearance of alkenyl and aromatic carbons. differential scanning calorimetry (DSC) and X-ray diffraction (XRD) analyses showed that the crystallinity of PE decreased significantly after sulfonation. The crystallinity results obtained from DSC are much lower than those from XRD due to the decomposition involved in the DSC testing. Furthermore, many new pores were formed in PPE during sulfonation and the subsequent loss of the sulphonate groups. These pores were further expanded during the carbonization process which may be due to the direct solid weight loss as well as the fast diffusion of the gases produced in pyrolysis. This study opens a simple and new approach for the fabrication of microporous carbon material via in-depth sulfonation of PE.
Language eng
DOI 10.1016/j.polymdegradstab.2016.10.019
Field of Research 0303 Macromolecular And Materials Chemistry
0904 Chemical Engineering
0912 Materials Engineering
Socio Economic Objective 0 Not Applicable
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Elsevier
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Document type: Journal Article
Collections: Institute for Frontier Materials
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