Paper Information

Journal:   IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)   FEBRUARY-MARCH 2012 , Volume 24 , Number 6 (ISSUE NUMBER 116); Page(s) 456 To 465.
 
Paper: 

THE EFFECTS OF MONTMORILLONITE AND CELLULOSE NANOCRYSTALS ON PHYSICAL PROPERTIES OF CARBOXYMETHYL CELLULOSE/POLYVINYL ALCOHOL BLEND FILMS

 
 
Author(s):  ABOLGHASEMI FAKHRI LEILA, GHANBARZADEH BABAK*, DEHGHANNIA JALAL, ENTEZAMI ALI AKBAR
 
* DEPARTMENT OF FOOD SCIENCE AND TECHNOLOGY, FACULTY OF AGRICULTURE, TABRIZ, IRAN
 
Abstract: 

Cellulose nanocrystal (CNC) is a type of nanomaterial which is produced by partial hydrolysis of cellulose and elimination of its amorphous regions. CNC has several advantages such as biodegradability and safety toward human health. In this study, CNC was produced from cotton linters and methods such as transmission electron microscopy and atomic force microscopy were used for confirmation of nanoscale size production of cellulose crystals. Carboxymethyl cellulose (CMC) /polyvinyl alcohol (PVA) -nanoclay (MMT) and CMC-PVA-CNC films, containing 3-10% (wt/wt CMC) nanofillers, were prepared by casting method and their physical properties were compared in order to approve the use of CNC instead of MMT for its contribution in improving the physical properties of carboxymethyl cellulose-based films. The X-ray diffraction results indicated the formation of an exfoliated nanostructure at all nanoparticle concentrations. The results showed that there was no significant difference (p<0.5) between the moisture absorption properties of films containing the two types of nanofiller. The films containing nanoclay showed higher mechanical strength compared to those containing CNC. The ultimate tensile strengths of the films containing 10% nanoclay and CNC were higher than the control film (69.72% and 47.05%, respectively).

 
Keyword(s): MOISTURE ABSORPTION, MECHANICAL PROPERTIES, COLOR PROPERTIES, NANOCLAY, CELLULOSE NANOCRYSTAL
 
References: 
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