کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
799686 | 1467461 | 2015 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Thermorheological and mechanical properties of cellulose reinforced PLA bio-composites Thermorheological and mechanical properties of cellulose reinforced PLA bio-composites](/preview/png/799686.png)
• Thermorheological properties of cellulose PLA composites predicted a suitable temperature for composite processing.
• Interactions of novel bioadimide provided better mechanical properties and improved processability of composites.
• X-ray computed tomography proved cellulose microstructure orientation in composites.
Cellulose fibers reinforced polylactic acid (PLA) bio-composites were developed by means of extrusion and injection molding process. The thermal properties of the developed bio-composites were investigated by thermo-gravimetric analysis (TGA). TGA results provided an upper limit of thermal processing window. The rheological properties of bio-composites showed shear thinning behavior and predicted a suitable temperature profile for processing the bio-composites. Heat distortion temperature of PLA/wood fibers (WP)/bioadimide bio-composites was slightly improved which could result in high temperature service life. Good interaction between short fibers and PLA resulted in better mechanical properties. With the addition of 1.3% bioadimide (bio-additive), tensile strength of bio-composites increased significantly. The impact strength of bio-composites was also considerably increased due to addition of bio-additive with bio-composites. This novel bio-additive was found very effective not only for fiber–matrix adhesion but also processability of bio-composites. X-ray computed tomography (CT) demonstrated cellulose fibers orientation and the fiber–matrix networking microstructures in a composite system.
Journal: Mechanics of Materials - Volume 80, Part A, January 2015, Pages 87–95