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The effects of morpholine pre-treated and carboxymethylated cellulose nanofibrils on the properties of alginate-based hydrogels
- Source :
- Carbohydrate Polymers. 198:320-327
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- The effects of varying percentage loadings of morpholine pre-treated cellulose nanofibrils (MCNF) and carboxymethylated cellulose nanofibrils (CMCNF) on the aqueous swelling, compressive modulus and viscoelastic properties of calcium-ion-crosslinked alginate hydrogels were investigated. In addition, the pore structures of hydrogels with the highest compressive modulus were studied. The incorporation of 5 wt. % MCNF resulted in a slightly reduced aqueous swelling, a 36% increase in compressive modulus and a layered pore structure when compared with the neat alginate hydrogel. On the other hand, the addition of CMCNF at the same loading led to a slightly improved aqueous swelling, an increase in compressive modulus (17%) and high porosity. Further increases in CNF loadings did not result in significant increase in material properties. The alginate/CNF composite materials have potentials to be used in applications where good swelling and mechanical robustness are required.
- Subjects :
- Materials science
Polymers and Plastics
Alginates
02 engineering and technology
010402 general chemistry
01 natural sciences
Viscoelasticity
chemistry.chemical_compound
Surface modification
Materials Chemistry
medicine
Cellulose
Porosity
Aqueous solution
Organic Chemistry
technology, industry, and agriculture
Hydrogels
QD Chemistry
021001 nanoscience & nanotechnology
0104 chemical sciences
Compressive strength
chemistry
Chemical engineering
Compressive modulus
Self-healing hydrogels
Carboxymethylation
Swelling
medicine.symptom
0210 nano-technology
Cellulose nanofibrils (CNF)
660 Chemical engineering
Subjects
Details
- ISSN :
- 01448617
- Volume :
- 198
- Database :
- OpenAIRE
- Journal :
- Carbohydrate Polymers
- Accession number :
- edsair.doi.dedup.....f668ec5e2c420804357364276bf2f659