Dual-stage thermosetting photopolymers for advanced manufacturing

Zhang B.1,2,3; Serjouei A.4; Zhang Y.F.5; Wu J.5,6; Li H.G.5; Wang D.7; Low H.Y5,6; Ge, Qi3

2021-05-01

10.1016/j.cej.2021.128466

CHEMICAL ENGINEERING JOURNAL   影响因子和分区

1385-8947

1873-3212

We report a dual-stage photocrosslinked polymer network based on sequential ultraviolet (UV)-triggered radical polymerization and thermally activated etherification, applicable to the fabrication of tailorable and programmable high-resolution structures. The first stage involves photoinitiated polymerization of monomer and crosslinker to obtain an intermediate polymer network. As such, sophisticated two-dimensional (2D) and micro-scale three-dimensional (3D) structures can be made by using UV-based advanced manufacturing technologies. These complex structures can then be readily programmed into other desired, permanent shapes, in the second stage, via thermally triggered etherification which results in a highly crosslinked, robust polymer network. The intermediate network (Stage I) is characterized to have a Young's modulus ranging from 342 to 1146 MPa and a glass transition temperature from 52 degrees C to 83 degrees C, depending on the concentration of crosslinker. The same material attains a glass transition temperature ranging from 67 degrees C to similar to 105 degrees C and a Young's modulus of up to 1607 MPa after the subsequent heating process (Stage II). Originally 3D printed 2D structures can be further programmed into rigid, permanent 2.5/3D ones. Micropatterns fabricated from intrinsically hydrophilic dual stage crosslinked photopolymers through soft lithography show superhydrophobicity, and can subsequently be molded with different curvatures for practical applications.

Dual-stage Crosslinked photopolymers Advanced manufacturing Programmable microstructures Superhydrophobic

SCI ; EI

英语

通讯

Science, Technology and Innovation Commission of Shenzhen Municipality[JCYJ20190806152601638] ; National Natural Science Foundation of China[51903210] ; China Scholarship Council (CSC)[CSC201806130090] ; Key-Area Research and Development Program of Guangdong Province[2020B090923003]

Engineering

Engineering, Environmental ; Engineering, Chemical

WOS:000624644500003

ELSEVIER SCIENCE SA

20210509868151

Elastic moduli ; Glass ; Glass transition ; Photopolymers ; Polymerization ; Superhydrophobicity ; Temperature

Thermodynamics:641.1 ; Printing Equipment:745.1.1 ; Chemical Operations:802.3 ; Glass:812.3 ; Polymers and Polymer Science:815 ; Polymerization:815.2 ; Materials Science:951

ENGINEERING

人工提交

1.Northwestern Polytech Univ, Res & Dev Inst Northwestern Polytech Univ Shenzhe, Xian Inst Flexible Elect IFE, 127 West Youyi Rd, Xian 710072, Peoples R China
2.Northwestern Polytech Univ, Xian Inst Biomed Mat & Engn IBME, 127 West Youyi Rd, Xian 710072, Peoples R China
3.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
4.Nottingham Trent Univ, Sch Sci & Technol, Dept Engn, Nottingham NG11 8NS, England
5.‎ Singapore Univ Technol & Design, Digital Mfg & Design Ctr, Singapore 487372, Singapore
6.Singapore Univ Technol & Design, Div Engn Prod Dev, Singapore 487372, Singapore
7.Shanghai Jiao Tong Univ, Robot Inst, Sch Mech Engn, Shanghai 200240, Peoples R China

Zhang B.,Serjouei A.,Zhang Y.F.,et al. Dual-stage thermosetting photopolymers for advanced manufacturing[J]. CHEMICAL ENGINEERING JOURNAL,2021,411.

Zhang B..,Serjouei A..,Zhang Y.F..,Wu J..,Li H.G..,...&Ge, Qi.(2021).Dual-stage thermosetting photopolymers for advanced manufacturing.CHEMICAL ENGINEERING JOURNAL,411.

Zhang B.,et al."Dual-stage thermosetting photopolymers for advanced manufacturing".CHEMICAL ENGINEERING JOURNAL 411(2021).