Multifunctionality of carboxyl groups carried by cellulose nanocrystals for mechanical and conductive properties of acrylic‑based hydrogels
Carregando...
Data
Data de publicação
Autores IPEN
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
Cellulose
Exportar
Resumo
In this work, an integrated strategy was
proposed for preparing hydrogel based on acrylic acid
(AA) and sodium alginate (SA) by adding TEMPOoxidized
cellulose nanocrystals (TOCNs) with different
carboxylic groups (–COOH) contents. The
addition of TOCNs and increase of its contents in
poly(acrylic acid) (PAA)/SA hydrogel systems played
a multifunctional role by which the mechanical properties
and ionic conductivity of PAA/SA hydrogels
were significantly affected and enhanced. TOCNs
with their abundant –COOH groups disperses SA and
AA in the hydrogel precursor solution for forming a
uniform semi-interpenetrating network. It also provides
more hydrogen bonds with SA and AA, and
results in high modulus of the final hydrogel. Accordingly,
the as-prepared hydrogels showed simultaneous
good compressive (1.41 MPa at compressive strain of
70%) and tensile (365 kPa strength at fracture strain
of 628%) stresses, excellent swelling rate (2509%),
good transparency (86.3%) and conductivity (0.229
S m−
1). The work confirmed the important roles of –
COOH in the TOCNs played in the construction and
properties of the hydrogel, and the hydrogels may
find great potential applications in the fields of flexible
wearable sensors benefits by excellent natural
biocompatibility from all the raw materials used.
Como referenciar
SONG, TAO; WANG, QIANG; HAN, TINGTING; DUFRESNE, ALAIN; COSTA, FERNANDA A.T. da; PARRA, DUCLERC F. Multifunctionality of carboxyl groups carried by cellulose nanocrystals for mechanical and conductive properties of acrylic‑based hydrogels: mechanism study. Cellulose, v. 32, n. 17, p. 10027-10049, 2025. DOI: 10.1007/s10570-025-06823-1. Disponível em: https://repositorio.ipen.br/handle/123456789/49340. Acesso em: 20 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.