Effect of structure modification on rheological properties of biodegradable poly(ester-urethane)

2000 ◽  
Vol 40 (7) ◽  
pp. 1655-1662 ◽  
Author(s):  
Antti Helminen ◽  
Janne Kylmä ◽  
Jukka Tuominen ◽  
Jukka V. Seppälä
Keyword(s):  
Rheological Properties ◽  
Structure Modification ◽  
Biodegradable Poly ◽  
Effect Of Structure

Physical and rheological properties of biodegradable poly(butylene succinate)/Alfa fiber composites

2020 ◽  
pp. 089270572090409
Author(s):  
Khadidja Arabeche ◽  
Fatiha Abdelmalek ◽  
Laurent Delbreilh ◽  
Latéfa Zair ◽  
Abdelkader Berrayah
Keyword(s):  
Rheological Properties ◽  
Complex Modulus ◽  
Fiber Composite ◽  
Cellulose Fiber ◽  
Complex Viscosity ◽  
Nucleating Agent ◽  
Butylene Succinate ◽  
Molding Method ◽  
Alfa Fibers ◽  
Biodegradable Poly

Biodegradable poly(butylene succinate) (PBS)/Alfa fiber biocomposites were prepared through the compression molding method. Scanning electron microscopy images were acquired to assess the effects of reinforcement and homogenization of mixtures and to determine the characteristics of the microstructure. The rheological properties, melting, and crystallization behavior of neat PBS and its biocomposites were investigated. Regarding the thermal properties, it was observed that the presence of Alfa fibers facilitates the crystallization of the PBS matrix, which suggests that Alfa cellulose fiber acts as a nucleating agent. The rheological analysis suggests that the biocomposites show a better dynamic behavior with the addition of Alfa fibers. Indeed, the incorporation of fibers increased the complex modulus and complex viscosity of the composites. Also, increasing the percentage of fibers in the matrix induces percolation, the shift and change in the slope of Cole–Cole curve of the PBS/Alfa fiber composite compared to that of neat PBS indicate that the PBS microstructure has changed with the addition of fibers. Moreover, the improvement of biocomposites properties is believed to be largely attributable to the homogeneous dispersion of the Alfa fibers within the polymer matrix and also to the strong interfacial interactions between the two constituents.

scholarly journals Thermal, mechanical and rheological properties of biodegradable poly(propylene carbonate) and poly(butylene carbonate) blends

2015 ◽  
Vol 33 (3) ◽  
pp. 444-455 ◽  
Author(s):  
Dan-dan Wu ◽  
Wu Li ◽  
Yan Zhao ◽  
Yun-jiao Deng ◽  
Hui-liang Zhang ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Propylene Carbonate ◽  
Biodegradable Poly ◽  
Poly Propylene

Thermal and Rheological Properties of Biodegradable Poly[(butylene succinate)-co-adipate] Nanocomposites

2010 ◽  
Vol 10 (7) ◽  
pp. 4184-4195 ◽  
Author(s):  
Jayita Bandyopadhyay ◽  
Arjun Maity ◽  
Bhanu Bhusan Khatua ◽  
Suprakas Sinha Ray
Keyword(s):  
Rheological Properties ◽  
Butylene Succinate ◽  
Biodegradable Poly

Rheological properties and foam preparation of biodegradable poly(butylene succinate)

2012 ◽  
Vol 127 (5) ◽  
pp. 3586-3594 ◽  
Author(s):  
Guan Li ◽  
Rongrong Qi ◽  
Jiaqi Lu ◽  
Xinli Hu ◽  
Yu Luo ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Butylene Succinate ◽  
Biodegradable Poly

Effect of chain extender on morphologies and properties of PBAT/PLA composites

2021 ◽  
pp. 089270572110514
Author(s):  
Jing Sun ◽  
Anrong Huang ◽  
Shanshan Luo ◽  
Min Shi ◽  
Jiling Song ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Rheological Properties ◽  
Chain Extender ◽  
Poly Lactic Acid ◽  
Melt Blending ◽  
Elongation At Break ◽  
Increasing Trend ◽  
Biodegradable Poly ◽  
Interfacial Compatibility

Biodegradable poly(butylene adipate-co-terephthalate)/poly(lactic acid) (PBAT/PLA) composites were prepared by melt blending, and chain extender was used to improve the compatibility of PBAT/PLA blends through the chemical reaction. The influence of PLA and chain extender contents on mechanical properties, morphology, and rheological properties of PBAT/PLA composites was systematically investigated. The results revealed that the Young’s modulus and stress values gradually increased under the same strain, whereas the elongation at break decreased with the increase of chain extender content for PBAT/PLA (80/20) composites. Noteworthy, the presence of chain extender improves the interfacial compatibility between PLA and PBAT phases. At the chain extender content of 0.4, 0.6, and 0.8 wt.%, the extensional viscosity of the composites exhibited an increasing trend, whereas an obvious strain-hardening phenomenon emerged in the uniaxial extensional curves.

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