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

Nonisothermal melt and cold crystallization behaviors of biodegradable poly(lactic acid)/Ti3C2Tx MXene nanocomposites

2021 ◽  
Author(s):  
Qian Zhao ◽  
Bowen Wang ◽  
Chenyuan Qin ◽  
Qiuxuan Li ◽  
Chuntai Liu ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Cold Crystallization ◽  
Poly Lactic Acid ◽  
Crystallization Behaviors ◽  
Biodegradable Poly

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.

A Sustainable Approach to Produce Stiff, Super-Tough, and Heat-Resistant Poly(lactic acid)-Based Green Materials

2019 ◽  
Vol 7 (8) ◽  
pp. 7869-7877 ◽  
Author(s):  
Oguzhan Oguz ◽  
Nicolas Candau ◽  
Mehmet Kerem Citak ◽  
Fatma Nalan Cetin ◽  
Senem Avaz Seven ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Poly Lactic Acid ◽  
Heat Resistant ◽  
Green Materials

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.

Super‐Toughened Heat‐Resistant Poly(lactic acid) Alloys By Tailoring the Phase Morphology and the Crystallization Behaviors

2020 ◽  
Vol 58 (3) ◽  
pp. 500-509 ◽  
Author(s):  
Baogou Wu ◽  
Pengwu Xu ◽  
Weijun Yang ◽  
Martin Hoch ◽  
Weifu Dong ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Phase Morphology ◽  
Poly Lactic Acid ◽  
Crystallization Behaviors ◽  
Heat Resistant

A green strategy to regulate cellular structure and crystallization of poly(lactic acid) foams based on pre-isothermal cold crystallization and CO2 foaming

2019 ◽  
Vol 129 ◽  
pp. 171-180 ◽  
Author(s):  
Bo Li ◽  
Guoqun Zhao ◽  
Guilong Wang ◽  
Lei Zhang ◽  
Junji Hou ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Cellular Structure ◽  
Cold Crystallization ◽  
Poly Lactic Acid ◽  
Green Strategy

Highly Reinforced Poly(lactic acid) Foam Fabricated by Formation of a Heat-Resistant Oriented Stereocomplex Crystalline Structure

2021 ◽  
Vol 9 (37) ◽  
pp. 12674-12686
Author(s):  
Ruiguang Li ◽  
Xiaowen Zhao ◽  
Phil Coates ◽  
Fin Caton-Rose ◽  
Lin Ye
Keyword(s):  
Lactic Acid ◽  
Crystalline Structure ◽  
Poly Lactic Acid ◽  
Heat Resistant

scholarly journals Thermal strain-induced cold crystallization of amorphous poly(lactic acid)

CrystEngComm ◽  
2016 ◽  
Vol 18 (18) ◽  
pp. 3237-3246 ◽  
Author(s):  
Chengbo Zhou ◽  
Hongfei Li ◽  
Wenyang Zhang ◽  
Jingqing Li ◽  
Shaoyong Huang ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Thermal Strain ◽  
Cold Crystallization ◽  
Poly Lactic Acid
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