Characterization of disintegrated bacterial cellulose nanofibers/PVA bionanocomposites prepared via ultrasonication.

Abstract:

:With the increasing demand for simple, efficient, environmentally friendly preparation methods to produce cellulose nanofibers for reinforcing a biodegradable film is increased, the role of nanofibers from the pure cellulose produced by bacteria becomes more important. This work characterized bacterial cellulose nanofibers disintegrated using a high shear homogenizer. These nanofibers, in 2.5, 5, and 7.5 mL suspensions, were mixed with PVA gel using ultrasonication. The resulting dried bionanocomposite film was also characterized. Adding nanofiber significantly increases (p ≤ 0.05) on tensile strength, thermal resistance, water vapor impermeability, and moisture resistance of PVA film but not strain at break. Tensile strength, tensile modulus, and elongation at the break of the 7.5 mL nanofiber reinforced film were 37.9 MPa (increased by 38%), 547.8 MPa (increased by 26%), and 10.7% (decreased from 17.2% for pure PVA), respectively compared to pure PVA. Transparency decreases slightly with increased nanofiber content. These properties indicate that this bionanocomposite film has potential in food packaging applications.

journal_name

Int J Biol Macromol

authors

Abral H,Kadriadi,Mahardika M,Handayani D,Sugiarti E,Muslimin AN

doi

10.1016/j.ijbiomac.2019.05.178

subject

Has Abstract

pub_date

2019-08-15 00:00:00

pages

591-599

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(19)32115-4

journal_volume

135

pub_type

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