Tannic Acid-Based Multifunctional Hydrogels with Facile
Adjustable Adhesion and Cohesion Contributed by Polyphenol Supramolecular
Chemistry
Posted on 2017-10-12 - 08:13
Adhesiveness of hydrogels
depends on the balance and synergy of
their cohesion and adhesion. However, it is a challenge to fabricate
catechol-based hydrogels with high adhesiveness because the required
condition for cohesion and adhesion of these hydrogels is in conflict
with each other: strong cohesion (gelation) requires a weak basic
condition, whereas strong adhesion requires an acidic condition. Here,
we demonstrated that by utilizing polyphenol supramolecular chemistry,
the coexistence of strong cohesion and adhesion can be achieved in
a hydrogel via the one-pot method. Poly(dimethyl diallyl ammonium
chloride)/tannic acid (PDDA/TA) hydrogel has been studied as a proof
of concept. Compared with catechol moieties that covalently grafted
on polymer chains, TA can bring high density of pyrogallol/catechol
functional groups for polymers via a noncovalent pathway, as well
as high acidity in the system. As a result, the cohesion of the hydrogel
is enhanced significantly, the highest storage moduli can reach up
to ca. 0.15 MPa; besides, the high acidity of the hydrogel prevents
pyrogallol/catechol groups from oxidation and guarantees strong adhesion;
thus, the hydrogel can adhere to diverse substrates steadily, including
tissues, glass, metals, and plastic. Moreover, because of the adjustable
adhesiveness via changing the pH, the PDDA/TA hydrogel becomes a unique
system with patternable adhesiveness. In addition, the hydrogel has
rapid self-healing and high ionic conductivity (∼4.3 S m–1). This study demonstrates that utilizing polyphenol
chemistry in the construction of hydrogels opens a new path toward
multifunctional hydrogels with improved properties.
CITE THIS COLLECTION
DataCite
3 Biotech
3D Printing in Medicine
3D Research
3D-Printed Materials and Systems
4OR
AAPG Bulletin
AAPS Open
AAPS PharmSciTech
Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg
ABI Technik (German)
Academic Medicine
Academic Pediatrics
Academic Psychiatry
Academic Questions
Academy of Management Discoveries
Academy of Management Journal
Academy of Management Learning and Education
Academy of Management Perspectives
Academy of Management Proceedings
Academy of Management Review
Fan, Hailong; Wang, Jiahui; Zhang, Qiuya; Jin, Zhaoxia (2017). Tannic Acid-Based Multifunctional Hydrogels with Facile
Adjustable Adhesion and Cohesion Contributed by Polyphenol Supramolecular
Chemistry. ACS Publications. Collection. https://doi.org/10.1021/acsomega.7b01067
or
Select your citation style and then place your mouse over the citation text to select it.
SHARE
Usage metrics
AUTHORS (4)
HF
Hailong Fan
JW
Jiahui Wang
QZ
Qiuya Zhang
ZJ
Zhaoxia Jin
KEYWORDS
Tannic Acid-Based Multifunctional Hydrogelsacidic conditionFacile Adjustable AdhesionPDDAPolyphenol Supramolecular Chemistry AdhesivenessadhesionCohesion Contributedstorage modulipolyphenol chemistrycatechol moietiesnoncovalent pathwaycatechol-based hydrogelsone-pot methodpolyphenol supramolecular chemistrymultifunctional hydrogelsTApatternable adhesivenesscohesion0.15 MPapolymer chains