期刊
MATERIALS TODAY COMMUNICATIONS
卷 30, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.mtcomm.2021.103074
关键词
Polymer blends; Cellulose; Polylactic acid; Polyamide 6; Solution blending
This study uses a solvent-based rapid precipitation method to address the limitations of using cellulose in polymer blends. It found that cellulose forms single-phase amorphous blends with intense intermolecular hydrogen bonding with polylactic acid, while forming a two-phase morphological structure with polyamide 6. Homogeneous blend formation between polylactic acid and cellulose shows promise for further material developments.
The use of cellulose in polymer blends is limited due to missing thermoplasticity and incompatibility with most synthetic polymers. In this work, a solvent-based rapid precipitation method was used to overcome these limitations. Blends of cellulose with polylactic acid or polyamide 6 were prepared using a previously presented ionic liquid-based solution-precipitation method. The structural properties of the blends and the specific intermolecular interactions were studied by FTIR, DSC, XRD and SEM. With polylactic acid, cellulose formed single-phase amorphous blends with intense intermolecular hydrogen bonding detected by FTIR. Less pronounced interactions were concluded for polyamide 6 and cellulose from FTIR, DSC and XRD, resulting in a two-phase morphological structure with continuous cellulose and dispersed polyamide 6 domains. Homogeneous blend formation between polylactic acid and cellulose could be promising for further material developments.
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