ORCID Profile
0000-0002-4924-9558
Current Organisation
University of Oxford
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Publisher: Elsevier BV
Date: 06-2021
Publisher: Elsevier BV
Date: 06-2019
Publisher: Elsevier BV
Date: 2021
Publisher: Wiley
Date: 10-08-2016
DOI: 10.1002/POLA.28242
Publisher: Elsevier BV
Date: 07-2021
Publisher: Elsevier BV
Date: 05-2021
Publisher: American Chemical Society (ACS)
Date: 12-10-2016
Abstract: In this work we describe the synthesis, thermal and rheological characterization, hot-melt extrusion, and three-dimensional printing (3DP) of poly(2-vinylpyridine) (P2VP). We investigate the effect of thermal processing conditions on physical properties of produced filaments in order to achieve high quality, 3D-printable filaments for material extrusion 3DP (ME3DP). Mechanical properties and processing performances of P2VP were enhanced by addition of 12 wt % acrylonitrile-butadiene-styrene (ABS), which reinforced P2VP fibers. We 3D-print P2VP filaments using an affordable 3D printer. The pyridine moieties are cross-linked and quaternized postprinting to form 3D-printed pH-responsive hydrogels. The printed objects exhibited dynamic and reversible pH-dependent swelling. These hydrogels act as flow-regulating valves, controlling the flow rate with pH. Additionally, a macroporous P2VP membrane was 3D-printed and the coordinating ability of the pyridyl groups was employed to immobilize silver precursors on its surface. After the reduction of silver ions, the structure was used to catalyze the reduction of 4-nitrophenol to 4-aminophenol with a high efficiency. This is a facile technique to print recyclable catalytic objects.
Publisher: CSIRO Publishing
Date: 2016
DOI: 10.1071/CH16033
Abstract: The aqueous solution self-assembly of a series of poly(2-vinyl pyridine)-block-poly(dimethylsiloxane) (P2VP-b-PDMS) diblock copolymers is reported. The particles show a phase separated interior morphology which can be tuned from onion-like sphere to axially stacked lamella with dimensions in the nanoscale. The key to this transition is the control of the interfacial properties using a mixture of two surfactants with preferential wetting to the respective blocks (P2VP or PDMS). Influence of block weights on particle morphology was investigated with results showing that the volume fraction of PDMS plays a crucial role in self-assembly, and a non-conventional structure of a prolate spheroid nanoparticle with a unique phase separated interior morphology can be synthesised.
Publisher: American Chemical Society (ACS)
Date: 03-2017
Publisher: Elsevier BV
Date: 05-2021
Location: United Kingdom of Great Britain and Northern Ireland
Location: United States of America
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Chao Chen.