Morphological, thermal, and mechanical properties of cellulose nanocrystal reinforced poly(lactic acid) and poly(butylene adipate‐co‐terephthalate): A comparative study on common and novel solvent casting methods

2021 ◽  
Author(s):  
Mojtaba Mohammadi ◽  
Marie‐Claude Heuzey ◽  
Pierre J. Carreau
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Comparative Study ◽  
Cellulose Nanocrystal ◽  
Poly Lactic Acid ◽  
Solvent Casting ◽  
Thermal And Mechanical Properties

Thermomechanical Study and Thermal Behavior of Plasticized Poly(Lactic Acid) Nanocomposites

2021 ◽  
Vol 317 ◽  
pp. 333-340
Author(s):  
Mohammed Zorah ◽  
Izan Roshawaty Mustapa ◽  
Norlinda Daud ◽  
Nahida Jumah ◽  
Nur Ain Syafiqah Sudin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Lactic Acid ◽  
Thermal Behavior ◽  
Food Packaging ◽  
Mechanical Performance ◽  
Poly Lactic Acid ◽  
Solvent Casting ◽  
Thermal And Mechanical Properties ◽  
Hot Press

Poly (lactic acid) (PLA) is a useful alternative to petrochemical commodity material used in such as in food packaging industries. Due to its inherent brittleness, low thermal stability, and poor crystallization, it needs to improve its properties, namely in terms of thermal and mechanical performance. The plasticized PLA composites reinforced with nanofiller were prepared by solvent casting and hot press methods. Thermal and mechanical properties, as well as the crystallinity study of these nanocomposites, were investigated to study the effect of tributyl citrate (TBC) and TiO2 on the PLA composites. The addition of TBC improved the flexibility and crystallinity of the composites. Reinforcement of TiO2 was found as a practical approach to improve the mechanical properties, thermal stability, and enhanced crystalline ability for plasticized PLA nanocomposites. Based on the results achieved in this study, the composite with 3.5% nanofiller (pPLATi3.5) presented the optimum set of mechanical properties and improved thermal stability.

Rheological and Thermo-Mechanical Properties of Poly(lactic acid)/Lignin-Coated Cellulose Nanocrystal Composites

2017 ◽  
Vol 5 (2) ◽  
pp. 1711-1720 ◽  
Author(s):  
Anju Gupta ◽  
William Simmons ◽  
Gregory T. Schueneman ◽  
Donald Hylton ◽  
Eric A. Mintz
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Cellulose Nanocrystal ◽  
Poly Lactic Acid

Effect of the Introduction of Fish Collagen on the Thermal and Mechanical Properties of Poly(lactic acid)

2015 ◽  
Vol 54 (43) ◽  
pp. 10945-10951 ◽  
Author(s):  
Hui Ma ◽  
Jiajia Shen ◽  
Qun Yang ◽  
Jie Zhou ◽  
Shuangshuang Xia ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Poly Lactic Acid ◽  
Thermal And Mechanical Properties ◽  
Fish Collagen

Effects of walnut shell powders on the morphology and the thermal and mechanical properties of poly(lactic acid)

2019 ◽  
Vol 33 (10) ◽  
pp. 1383-1395
Author(s):  
Hongjuan Zheng ◽  
Zhengqian Sun ◽  
Hongjuan Zhang
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Property Testing ◽  
Walnut Shell ◽  
Poly Lactic Acid ◽  
Thermal And Mechanical Properties ◽  
Scanning Calorimetry ◽  
Elongation At Break ◽  
Heat Distortion Temperature ◽  
Testing Techniques

Poly(lactic acid) (PLA) has good environmental compatibility, however, its high brittleness, slow rate of crystallization, and low heat distortion temperature restrict its widespread use. To overcome these limitations, in this study, PLA was mixed with walnut shell (WS) powders. The effects of WS powders on the morphology and the thermal and mechanical properties of PLA were investigated. The products were characterized by differential scanning calorimetry (DSC), infrared (IR) spectroscopy, polarizing optical microscopy (POM), and various mechanical property testing techniques. The results showed that WS powders had a significant effect on the morphology and the thermal and mechanical properties of PLA. The tensile strength, impact strength, and elongation at break of the PLA/WS composites first increased and then decreased with the increasing addition of WS powders. When the addition of WS powders was about 0.5 wt%, they reached maximum values of 51.2 MPa, 23.3 MPa, and 19.0%, respectively. Compared with neat PLA, the spherulite grain size of the composites could be reduced and many irregular polygons were formed during crystallization. The melting, cold crystallization, and glass-transition temperatures of the composites were lower than those of neat PLA.

scholarly journals A comparative study of the mechanical, shape-memory, and degradation properties of poly(lactic acid) nanofiber and cellulose nanocrystal reinforced poly(mannitol sebacate) nanocomposites

RSC Advances ◽  
2017 ◽  
Vol 7 (35) ◽  
pp. 21869-21882 ◽  
Author(s):  
Águeda Sonseca ◽  
Olivia Menes ◽  
Enrique Giménez
Keyword(s):  
Lactic Acid ◽  
Comparative Study ◽  
Shape Memory ◽  
Mechanical Behaviour ◽  
Implantable Devices ◽  
Cellulose Nanocrystal ◽  
Poly Lactic Acid ◽  
Degradation Properties

Composites based on elastomeric matrices and with enhanced mechanical behaviour at physiological temperatures useful for shape memory biodegradable implantable devices.

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