Protein-microfibrillated cellulose (MFC) composite
Mirfatahiniaraki, Mahsasadat (2017)
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe201804176562
https://urn.fi/URN:NBN:fi-fe201804176562
Tiivistelmä
Most of the material for producing packaging is non-degradable or made from non-renewable resources. Thus, they are not environmentally friendly. Recently, there has been a growing interest in using renewable and bio-based materials for promoting the biodegradable composite which can decrease packaging waste and boost the quality of shelf life of a product.
The aim of this work is to study the possible use of a bio-based polymer-fiber complex as a strength enhancer. Different mechanical properties of handsheets were tested and special attention was paid to tensile properties, water retention values (WRV) and surface charge of the fibers or furnish. Different complexes and dosing strategies were evaluated in order to assess the role of interactions between complexes. After the adsorptions or pre-mixing of the components, handsheets were made and the filtrates were stored for TOC/TN measurements. The strength properties of handsheets were measured and the water retention values were detected to follow the swelling of the modified pulp fibers.
It was found that surface charge of kraft pulp fibers increases as pH increases. Adsorption of polymeric complexes can be used to enhance the strength properties, and it was sensitive to order to dosing and the composition.
The aim of this work is to study the possible use of a bio-based polymer-fiber complex as a strength enhancer. Different mechanical properties of handsheets were tested and special attention was paid to tensile properties, water retention values (WRV) and surface charge of the fibers or furnish. Different complexes and dosing strategies were evaluated in order to assess the role of interactions between complexes. After the adsorptions or pre-mixing of the components, handsheets were made and the filtrates were stored for TOC/TN measurements. The strength properties of handsheets were measured and the water retention values were detected to follow the swelling of the modified pulp fibers.
It was found that surface charge of kraft pulp fibers increases as pH increases. Adsorption of polymeric complexes can be used to enhance the strength properties, and it was sensitive to order to dosing and the composition.