Challenge for Trade-Off Relationship between the Mechanical Property and Healing Efficiency of Self-Healable Polyimide

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Polyimide is actively applied in various industrial fields because of its strong mechanical properties, owing to the interactions between the polymer chains. Fully aromatic imide structures exhibit high glass-transition temperatures due to the strong interactions between their chains, which hinder chain mobility. Therefore, preparing a material that exhibits self-healing at a low temperature of <= 00 C-degrees and good mechanical properties is challenging. Thus, we prepared imides with four-component semiaromatic structures by adjusting the contents of 4,4'(hexafluoroisopropylidene)-diphthalic anhydride and 4,4'-(4,4'-isopropylidenediphenoxy)-bis-(phthalic anhydride) to yield four-component self-healable colorless polyimides (f-SH-CPIs) with novel structures, flexibilities, good mechanical properties, and low healing temperatures. The flexibilities and distances between the polymer chains, as the basis of the trade-off relationship between the mechanical properties and healing efficiency, were controlled. These materials may be used as substrates in wearable devices and multilayer insulation that may protect from space dust, cosmic rays, and satellite fragments.
Publisher
AMER CHEMICAL SOC
Issue Date
2023-11
Language
English
Article Type
Article
Citation

ACS APPLIED MATERIALS &amp; INTERFACES, v.15, no.47, pp.54923 - 54932

ISSN
1944-8244
DOI
10.1021/acsami.3c12594
URI
http://hdl.handle.net/10203/316603
Appears in Collection
RIMS Journal Papers
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