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Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
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Title: Cellulose nanocrystals as barrier performance enhancer of extrusion-blown PLA films for food applications

Source: In: proceedings, TechConnect

Author(s)Matuana, L. M.; Karkhanis, S. S.; Stark, Nicole; Sabo, Ronald

Publication Year: 2016  View PDF »

Category: Conference Proceedings
Associated Research Project(s):   FPL-4706-2B

Abstract: This paper examined the effect of cellulose nanocrystal (CNC) addition on the water vapor and oxygen transmission rates of extrusion-blown poly(lactic) acid (PLA)/CNC nanocomposite films recorded at various temperatures and relative humidities (RH). Experimental results indicate that the addition of CNCs into PLA matrix through a melt processing approach improves the barrier properties of PLA, irrespective of RH or temperature. The addition of only 1% CNC into PLA matrix improved the water vapor and oxygen barrier performance of nanocomposite films by 33% and 62% respectively due to the tortuosity effect caused by cellulose nanocrystals-induced crystallinity in the matrix. Both RH and temperature had less influence on water vapor barrier properties when CNCs were added into the films. This implies that novel bio-based composites with improved barrier properties suitable for packaging applications could be developed by combining CNCs with PLA.

Keywords: cellulose nanocrystals (CNCs); polylactic acid (PLA); composites; packaging; films; barrier properties; water vapor transmission; oxygen transmission

Publication Review Process: Non-Refereed (Other)

File size: 295 kb(s)

Date posted: 09/26/2016
RITS Product ID: 81980
Current FPL Scientists associated with this product (listed alphabetically)
Sabo, Ronald C.
Research Materials Engineer
Stark, Nicole M.
Research Chemical Engineer

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