High Performance Polysodium Acrylate Superabsorbents Utilizing Microfibrillated Cellulose to Augment Gel Properties
Artikel i vetenskaplig tidskrift, 2010

Microfibrillated cellulose was utilized at low concentrations as a filler material, added prior to free radical polymerization, in cross-linked superabsorbent polysodium acrylate hydrogels. The effect of microfibrillated cellulose concentration on equilibrium swelling, shear modulus after synthesis, and shear modulus at equilibrium swelling was studied at different degree of cross-linking. For the characterization of the microfibrillated cellulose optical microscopy, atomic force microscopy, and transmittance analysis were used. The shear modulus of the samples was determined using uniaxial compression analysis. The swelling of the gels was determined using classical gravimetrical measurements. It was found that microfibrillated cellulose was highly efficient in increasing the shear modulus of the gels. Furthermore, the microfibrillated cellulose was found to have the same effect on the swelling and shear modulus at equilibrium swelling as the same mass of the conventional covalent cross-linker N,N'-methylenebisacrylamide (MBA), while in fact improving the fracture resistance of the gels. In conclusion, microfibrillated cellulose shows great potential as an additive to enhance the performance of soft materials.

Hydrogels

nanocomposite gels

rayleigh-scattering

Superabsorbents

elastic-modulus

swelling

hydrogels

reinforcement

properties

rheological properties

MFC

behaviors

polymer networks

composites

Författare

Mikael Larsson

SuMo Biomaterials

Chalmers, Kemi- och bioteknik, Farmaceutisk teknologi

Mats Stading

Chalmers, Material- och tillverkningsteknik, Polymera material och kompositer

Anette Larsson

SuMo Biomaterials

Chalmers, Kemi- och bioteknik, Farmaceutisk teknologi

Soft Materials

1539-445X (ISSN)

Vol. 8 3 207-225

Ämneskategorier

Materialteknik

Styrkeområden

Materialvetenskap

DOI

10.1080/1539445X.2010.495613

Mer information

Skapat

2017-10-07