Cellulose fiber-reinforced polymer composites have received much attention because of their low density, low cost, non-abrasiveness, fire resistance, lack of toxicity and biodegradable properties. A great deal of research has been done to study the effect of using cellulose fibers as the reinforcing component of different composites [12].Despite the fact that nanocellulose has great potential as a biological reinforcement in bio-nanocomposites, its uniform dispersion, moisture absorption, quality variations, low thermal stability and compatibility with common polyester matrix in composite materials remain as big challenges. Thus, proper interface compatibilization of the polyester-nanocellulose blends could lead to
improvement in those properties. The chemical modification of hydrophilic hydroxyl groups is one of the proposed
strategies to reduce the cellulose surface polarity[13–15]. Among the chemical modification methods that can reduce the hydrophilic surface characteristics of cellulose, acetylation is a promising technique [16,17].Acetylation is a chemical modification, in which the chemical reacts with OH groups in the cellulose, thereby turning the hydrophilic surface of cellulose into a hydrophobic one. In particular, acetylation can improve the hydrophobic characteristics of cellulose surfaces, resulting in better dispersibility in the intrinsic non-polar matrix during further processing [18,19].
Cellulose fiber-reinforced polymer composites have received much attention because of their low density, low cost, non-abrasiveness, fire resistance, lack of toxicity and biodegradable properties. A great deal of research has been done to study the effect of using cellulose fibers as the reinforcing component of different composites [12].Despite the fact that nanocellulose has great potential as a biological reinforcement in bio-nanocomposites, its uniform dispersion, moisture absorption, quality variations, low thermal stability and compatibility with common polyester matrix in composite materials remain as big challenges. Thus, proper interface compatibilization of the polyester-nanocellulose blends could lead to
improvement in those properties. The chemical modification of hydrophilic hydroxyl groups is one of the proposed
strategies to reduce the cellulose surface polarity[13–15]. Among the chemical modification methods that can reduce the hydrophilic surface characteristics of cellulose, acetylation is a promising technique [16,17].Acetylation is a chemical modification, in which the chemical reacts with OH groups in the cellulose, thereby turning the hydrophilic surface of cellulose into a hydrophobic one. In particular, acetylation can improve the hydrophobic characteristics of cellulose surfaces, resulting in better dispersibility in the intrinsic non-polar matrix during further processing [18,19].
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