TY - JOUR T1 - Development of polylactic acid nanocomposite films reinforced with cellulose nanocrystals derived from coffee silverskin. AU - Sung,Soo Hyun, AU - Chang,Yoonjee, AU - Han,Jaejoon, Y1 - 2017/04/21/ PY - 2017/01/06/received PY - 2017/04/17/revised PY - 2017/04/18/accepted PY - 2017/5/16/entrez PY - 2017/5/16/pubmed PY - 2018/7/19/medline KW - Biopolymer film KW - Cellulose nanocrystals KW - Coffee silverskin KW - Extrusion KW - Polylactic acid SP - 495 EP - 503 JF - Carbohydrate polymers JO - Carbohydr Polym VL - 169 N2 - Bio-nanocomposite films based on polylactic acid (PLA) matrix reinforced with cellulose nanocrystals (CNCs) were developed using a twin-screw extruder. The CNCs were extracted from coffee silverskin (CS), which is a by-product of the coffee roasting process. They were extracted by alkali treatment followed by sulfuric acid hydrolysis. They were used as reinforcing agents to obtain PLA/CNC nanocomposites by addition at different concentrations (1%, 3%, and 5% CNCs). Morphological, tensile, and barrier properties of the bio-nanocomposites were analyzed. The tensile strength and Young's modulus increased with both 1% and 3% CNCs. The water vapor permeability decreased gradually with increasing addition of CNCs up to 3% and good oxygen barrier properties were found for all nanocomposites. These results suggest that CNCs from CS can improve the physical properties of PLA-based biopolymer film. The developed PLA/CNC bio-nanocomposite films can potentially be used for biopolymer materials with enhanced barrier and mechanical properties. SN - 1879-1344 UR - https://www.unboundmedicine.com/medline/citation/28504172/Development_of_polylactic_acid_nanocomposite_films_reinforced_with_cellulose_nanocrystals_derived_from_coffee_silverskin_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0144-8617(17)30426-5 DB - PRIME DP - Unbound Medicine ER -