Mechanical and barrier properties of kappa-carrageenan/cellulose nanocrystals bio-nanocomposite films

The Wood and Biofiber International Conference 2017

轻工业生物科学

Azizi, S.^1 ; Mohamad, R.^1,2

Department of Bioprocess Technology, Bioprocessing and Biomanufacturing Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Selangor

43400, Malaysia^1

Laboratory of Biopolymer and Derivatives, Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia, Selangor

43400, Malaysia^2

关键词: Cellulose nanocrystal (CNCs);    Enhanced properties;    Field emission scanning electron microscopy;    Kappa carrageenan;    Mechanical and barriers;    Oxygen barrier properties;    Oxygen transmission rates;    Solvent casting;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/368/1/012013/pdf
DOI  :  10.1088/1757-899X/368/1/012013

学科分类：生物科学（综合）

来源: IOP

【 摘 要 】

The aim of this study is to report the effect of the addition of cellulose nanocrystals (CNCs) on the mechanical and barrier properties of Kappa-Carrageenan (KC) bio-nanocomposite films prepared through the solvent casting process. The characterizations of bio-nanocomposite films were carried out in terms of transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), oxygen transmission rate (OTR), and tensile tests. TEM and FESEM results showed that at low loading levels, CNCs were dispersed homogenously in the Kappa-Carrageenan matrix. The tensile strength and modulus in films increased from 45.7 MPa to 108.4 MPa and from 295 MPa to 710 MPa respectively, when CNCs content went from 0 wt% to 3.0 wt%. The oxygen barrier property of Kappa-Carrageenan matrix was best enhanced at 3.0 wt% of CNCs loading. The enhanced properties attained by incorporating CNCs can be beneficial in various applications.