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@ARTICLE{Xu:1026169,
author = {Xu, Jian and Wu, Baohu and Hou, Lei and Wu, Peiyi},
title = {{H}ydrogen {B}onding {C}ompetition {M}ediated {P}hase
{S}eparation with {A}bnormal {M}oisture‐{I}nduced
{S}tiffness {B}oosting},
journal = {Small},
volume = {20},
number = {36},
issn = {1613-6810},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2024-03322},
pages = {2401164},
year = {2024},
abstract = {Moisture usually deteriorates polymers’ mechanical
performance owing to its plasticizing effect, causing side
effects in their practical load-bearing applications.
Herein, a simple binary ionogel consisting of an amphiphilic
polymer network and a hydrophobic ionic liquid (IL) is
developed with remarkable stiffening effect after moisture
absorption, demonstrating a complete contrast to
water-induced softening effect of most polymer materials.
Such a moisture-induced stiffening behavior is induced by
phase separation after hydration of this binary ionogel.
Specifically, it is revealed that hydrogen (H)-bonding
structures play a dominant role in the humidity-responsive
behavior of the ionogel, where water will preferentially
interact with polymer chains through H-bonding and break the
polymer-IL H-bonds, thus leading to phase separation
structures with modulus boosting. This work may provide a
facile and effective molecular engineering route to
construct mechanically adaptive polymers with water-induced
dramatic stiffening for diverse applications.},
cin = {JCNS-4 / JCNS-FRM-II / MLZ},
ddc = {620},
cid = {I:(DE-Juel1)JCNS-4-20201012 /
I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (FZJ) (POF4-6G4)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
experiment = {EXP:(DE-MLZ)KWSX-20231024},
typ = {PUB:(DE-HGF)16},
pubmed = {38700067},
UT = {WOS:001217133500001},
doi = {10.1002/smll.202401164},
url = {https://juser.fz-juelich.de/record/1026169},
}