Journal
CARBOHYDRATE POLYMERS
Volume 153, Issue -, Pages 445-454Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2016.07.119
Keywords
Cottonseed hull; Cellulose nanocrystals; Morphology; Polyvinyl alcohol; Rheological behavior
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Funding
- Science and Technology Project of Guangzhou [201508020090]
- USDA National Institute of Food and Agriculture McIntire Stennis project [1000017]
- China Scholarship Council (CSC)
- NIFA [599525, 1000017] Funding Source: Federal RePORTER
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The present work describes the isolation of cellulose nanoparticles (CNs) with different morphologies and their influence on rheological properties of CN and CN-poly (vinyl alcohol) (PVA) suspensions. Cottonseed hulls were used for the first time to extract three types of CNs, including fibrous cellulose nanofibers, rod -like cellulose nanocrystals and spherical cellulose nanoparticles through mechanical and chemical methods. Rheology results showed that the rheological behavior of the CN suspensions was strongly dependent on CN concentration and particle morphology. For PVA/CN systems, concentration of PVA/CN suspension, morphology of CNs, and weight ratio of CN to PVA were three main factors that influenced their rheology behaviors. This research reveals the importance of CN morphology and composition concentration on the rheological properties of PVA/CN, providing new insight in preparing high performance hydrogels, fibers and films base on PVA/CN suspension systems. (C) 2016 Elsevier Ltd. All rights reserved.
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