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Title: Networking of block copolymer nanoassemblies via digital light processing four-dimensional printing for programmable actuation
Authors: Pan, Houwen Matthew
Sarkar, Jit
Goto, Atsushi
Keywords: Science::Chemistry
Issue Date: 2022
Source: Pan, H. M., Sarkar, J. & Goto, A. (2022). Networking of block copolymer nanoassemblies via digital light processing four-dimensional printing for programmable actuation. ACS Applied Polymer Materials, 4(11), 8676-8683.
Project: NRF-NRFI05-2019- 0001 
Journal: ACS Applied Polymer Materials 
Abstract: Controls over stimuli-responsive functional materials and programmable shape deformations are key features in the four-dimensional (4D) printing of soft actuators. Instead of using random copolymers, homopolymers, or natural polymers, this paper reports the first use of amphiphilic, photocurable, and pH-responsive block copolymer (BCP) nanoassemblies in digital light processing (DLP) 4D printing to fabricate smart and programmable soft actuators. Programmable actuation was studied via a bottom-up approach: (1) designed synthesis of pH-responsive BCPs, (2) nanoassembly structures of BCPs, and (3) networking of nanoassemblies via the photocuring process in DLP. As a proof-of-concept, bilayered grippers, ring-shaped actuators, and octopus-like actuators were programmed to produce a range of bending angles and actuation patterns. pH-responsive BCP nanoassemblies were also combined with commercially available three-dimensional printing liquid resin (PlasClear) to produce stimulus-responsive printing ink that was successfully used for 4D printing applications. Thus, smart and programmable materials were developed for 4D printing applications.
ISSN: 1759-9962
DOI: 10.1021/acsapm.2c01617
DOI (Related Dataset): NRF-NRFI05-2019-0001
Schools: School of Chemistry, Chemical Engineering and Biotechnology 
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Polymer Materials, copyright © 2022 American Chemical Society, after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CCEB Journal Articles

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