4.6 Article

Improved water barrier and mechanical properties of soy protein isolate films by incorporation of SiO2 nanoparticles

Journal

RSC Advances
Volume 6, Issue 113, Pages 112317-112324

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra23461e

Keywords

-

Funding

  1. National Natural Science Foundation of China [31470612]
  2. Heilongjiang province outstanding youth science fund [JC201301]

Ask authors/readers for more resources

SiO2 nanoparticles with different sizes were prepared under ultrasonic irradiation and incorporated with soy protein isolate (SPI) films. The morphology, size distributions and stability of the obtained SiO2 nanoparticles were characterized by transmission electron microscopy and zeta potential measurements. The effects of differently sized SiO2 nanoparticles on the morphological, physical, water barrier, oxygen barrier, mechanical and thermal properties of the SPI-based films were investigated. The results showed that the moisture content and total soluble matter values of the SPI-based films decreased with decreasing SiO2 nanoparticle size and showed the lowest values of 16.70 +/- 0.40% and 30.44 +/- 0.06%, respectively, with a minimum particle size of 8.11 nm. Smallest particle sizes not only improved the contact angle and tensile strength by 21.12% and 17.65%, but also reduced the water vapor permeability and oxygen permeability of the SPI films by 11.79% and 9.66%, respectively. Furthermore, the addition of SiO2 enhanced the thermal stability of the SPI films.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available