Role of poly(lactic acid) in the phase transition of poly(vinylidene fluoride) under uniaxial stretching

2012 ◽  
Vol 129 (4) ◽  
pp. 1686-1696 ◽  
Author(s):  
Qi Xie ◽  
Kai Ke ◽  
Wen-Rou Jiang ◽  
Wei Yang ◽  
Zheng-Ying Liu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Lactic Acid ◽  
Vinylidene Fluoride ◽  
Poly Lactic Acid ◽  
Uniaxial Stretching ◽  
Poly Vinylidene Fluoride

scholarly journals Biocomposites of Epoxidized Natural Rubber/Poly(lactic acid) Modified with Natural Fillers (Part I)

2021 ◽  
Vol 22 (6) ◽  
pp. 3150
Author(s):  
Anna Masek ◽  
Stefan Cichosz ◽  
Małgorzata Piotrowska
Keyword(s):  
Tensile Strength ◽  
Lactic Acid ◽  
Natural Rubber ◽  
Epoxidized Natural Rubber ◽  
Poly Lactic Acid ◽  
Uv Aging ◽  
High Elasticity ◽  
Natural Fillers ◽  
Natural Additives

The study aimed to prepare sustainable and degradable elastic blends of epoxidized natural rubber (ENR) with poly(lactic acid) (PLA) that were reinforced with flax fiber (FF) and montmorillonite (MMT), simultaneously filling the gap in the literature regarding the PLA-containing polymer blends filled with natural additives. The performed study reveals that FF incorporation into ENR/PLA blend may cause a significant improvement in tensile strength from (10 ± 1) MPa for the reference material to (19 ± 2) MPa for the fibers-filled blend. Additionally, it was found that MMT employment in the role of the filler might contribute to ENR/PLA plasticization and considerably promote the blend elongation up to 600%. This proves the successful creation of the unique and eco-friendly PLA-containing polymer blend exhibiting high elasticity. Moreover, thanks to the performed accelerated thermo-oxidative and ultraviolet (UV) aging, it was established that MMT incorporation may delay the degradation of ENR/PLA blends under the abovementioned conditions. Additionally, mold tests revealed that plant-derived fiber addition might highly enhance the ENR/PLA blend’s biodeterioration potential enabling faster and more efficient growth of microorganisms. Therefore, materials presented in this research may become competitive and eco-friendly alternatives to commonly utilized petro-based polymeric products.

The role of cold crystallization of homochiral crystallites in the superb heat resistant poly(lactic acid)

2020 ◽  
Vol 31 (5) ◽  
pp. 1077-1087 ◽  
Author(s):  
Caixia Zhao ◽  
Miaomiao Yu ◽  
Qicheng Fan ◽  
Guoxiang Zou ◽  
Jinchun Li
Keyword(s):  
Lactic Acid ◽  
Cold Crystallization ◽  
Poly Lactic Acid ◽  
Heat Resistant

Tuning the ferroelectric phase transition of PVDF by uniaxially stretching crosslinked PVDF films with CFCH bonds

2020 ◽  
Vol 8 (33) ◽  
pp. 11426-11440
Author(s):  
Xiao Wang ◽  
Baobao Qiao ◽  
Shaobo Tan ◽  
Weiwei Zhu ◽  
Zhicheng Zhang
Keyword(s):  
Phase Transition ◽  
Ferroelectric Phase Transition ◽  
Vinylidene Fluoride ◽  
Ferroelectric Phase ◽  
Relaxor Ferroelectric ◽  
Artificial Muscles ◽  
Ferroelectric Polymers ◽  
Poly Vinylidene Fluoride ◽  
Electrostrictive Properties

Poly(vinylidene fluoride) (PVDF) based relaxor ferroelectric polymers show great potential for applications in transducers, sensors and artificial muscles for their excellent electrostrictive properties.

Role of Cationic Oxidation States to Enhance the Electroactive β-Phase of Poly(vinylidene Fluoride) and its Energy Harvesting Performance

2018 ◽  
Vol 5 (22) ◽  
pp. 3533-3539 ◽  
Author(s):  
Kausalya Ganesan ◽  
Nagamalleswara R. Alluri ◽  
Nirmal Prashanth M. J. Raj ◽  
A. Chandrasekhar ◽  
S.-J. Kim
Keyword(s):  
Energy Harvesting ◽  
Vinylidene Fluoride ◽  
Oxidation States ◽  
Β Phase ◽  
Poly Vinylidene Fluoride

The role of multiwall carbon nanotubes on physical, mechanical and rheological properties of poly(lactic acid)/natural rubber/CNT hybrid systems

2020 ◽  
pp. 096739112093135
Author(s):  
Mohammad Mahdi Salehi ◽  
Fatemeh Hakkak
Keyword(s):  
Lactic Acid ◽  
Natural Rubber ◽  
Rheological Properties ◽  
Droplet Size ◽  
Multiwall Carbon Nanotubes ◽  
Droplet Size Distribution ◽  
Hybrid Nanocomposites ◽  
Poly Lactic Acid ◽  
Melt Mixing

The main objective of the present work was to study the role of carbon nanotube (CNT) on the microstructure development and physical, mechanical, and rheological properties of poly(lactic acid) (PLA)/natural rubber (NR)/CNT hybrid nanocomposites. The PLA/NR blend samples with constant blend ratio (90/10) were prepared by melt mixing in a laboratory internal mixer at a temperature of 190°C. The behavior of the PLA/NR blend was examined depending on the CNT content (0.5–6 wt%). The droplet size and droplet size distribution of the NR phase decreases with the increase in CNTs content. This could be explained in terms of compatibilizing effect of CNT and the changing of the viscosity ratio of the blend phases. The development of the microstructure and the physical properties of the blend were also investigated according to the CNT contents by measuring the linear viscoelasticity. The elongational behavior and mechanical properties of the blends were strongly dependent on the location of the CNT. The CNT worked as an efficient compatibilizer and also it worked as a reinforcing filler making the matrix more rigid.

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