scholarly journals Poly(lactic acid)—Mass production, processing, industrial applications, and end of life

2016 ◽  
Vol 107 ◽  
pp. 333-366 ◽  
Author(s):  
E. Castro-Aguirre ◽  
F. Iñiguez-Franco ◽  
H. Samsudin ◽  
X. Fang ◽  
R. Auras
Keyword(s):  
Lactic Acid ◽  
End Of Life ◽  
Mass Production ◽  
Industrial Applications ◽  
Poly Lactic Acid

scholarly journals A Facile Approach for the Mass Production of Submicro/Micro Poly (Lactic Acid) Fibrous Mats and Their Cytotoxicity Test towards Neural Stem Cells

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Afra Hadjizadeh ◽  
Houman Savoji ◽  
Abdellah Ajji
Keyword(s):  
Surface Tension ◽  
Lactic Acid ◽  
Polymer Solution ◽  
Mass Production ◽  
Fluorescent Microscopy ◽  
Small Diameter ◽  
Solvent System ◽  
Poly Lactic Acid ◽  
Binary Solvent ◽  
Cytotoxicity Test

Despite many of the studies being conducted, the electrospinning of poly (lactic acid) (PLA), dissolved in its common solvents, is difficult to be continuously processed for mass production. This is due to the polymer solution droplet drying. Besides, the poor stretching capability of the polymer solution limits the production of small diameter fibers. To address these issues, we have examined the two following objectives: first, using an appropriate solvent system for the mass production of fibrous mats with fine-tunable fiber diameters; second, nontoxicity of the mats towards Neural Stem Cell (NSC). To this aim, TFA (trifluoroacetic acid) was used as a cosolvent, in a mixture with DCM (dichloromethane), and the solution viscosity, surface tension, electrical conductivity, and the continuity of the electrospinning process were compared with the solutions prepared with common single solvents. The binary solvent facilitated PLA electrospinning, resulting in a long lasting, stable electrospinning condition, due to the low surface tension and high conductivity of the binary-solvent system. The fiber diameter was tailored from nano to micro by varying effective parameters and examined by scanning electron microscopy (SEM) and image-processing software. Laminin-coated electrospun mats supported NSC expansion and spreading, as examined using AlamarBlue assay and fluorescent microscopy, respectively.

scholarly journals Effect of PMMA/Silica Hybrid Particles on Interfacial Adhesion and Crystallization Properties of Poly(lactic acid)/Block Acrylic Elastomer Composites

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2231 ◽  
Author(s):  
Gi Hong Kim ◽  
Sung Wook Hwang ◽  
Bich Nam Jung ◽  
DongHo Kang ◽  
Jin Kie Shim ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Phase Separation ◽  
Interfacial Adhesion ◽  
Crystallization Rate ◽  
Stability Limit ◽  
Industrial Applications ◽  
Poly Lactic Acid ◽  
Hybrid Particles ◽  
Crystallinity Degree ◽  
Silica Hybrid

Poly(lactic acid) (PLA) is a relatively brittle polymer, and its low melt strength, ductility, and thermal stability limit its use in various industrial applications. This study aimed to investigate the effect of poly(methyl methacrylate) (PMMA) and PMMA/silica hybrid particles on the mechanical properties, interfacial adhesion, and crystallization behavior of PLA/block acrylic elastomer. PLA/block acrylic elastomer blends exhibit improved flexibility; however, phase separation occurs between PLA and block acrylic elastomer domains. Valid time-temperature superposition (TTS) measurements of viscoelastic behavior were obtained and exhibited interfacial adhesion with the addition of PMMA or PMMA/silica in PLA/block acrylic elastomer blends. In particular, the phase separation temperature was increased by the incorporation of PMMA/silica hybrid particles, which suggests a potential role for these particles in improving the phase stability. In addition, PMMA inhibits crystallization, while PMMA/silica acts as a nucleating agent, thus increasing the crystallization rate and crystallinity degree.

Effect of Glycidyl Methacrylate (GMA) Content on Grafting Yield and Mechanical Properties of GMA Grafted Poly(Lactic Acid) Prepared by Melt Mixing Method

2016 ◽  
Vol 709 ◽  
pp. 27-31
Author(s):  
Thanh Chi Nguyen ◽  
Ruksakulpiwat Chaiwat ◽  
Yupaporn Ruksakulpiwat
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Glycidyl Methacrylate ◽  
Fracture Behaviour ◽  
Industrial Applications ◽  
Proton Nuclear Magnetic Resonance ◽  
Poly Lactic Acid ◽  
Melt Mixing ◽  
Molecular Weights ◽  
Grafting Reaction

Glycidyl methacrylate (GMA) was grafted onto poly (lactic acid) (PLA) by internal mixer using dicumyl peroxide (DCP) as an initiator. The results from proton nuclear magnetic resonance (1H-NMR) and gel permeation chromatograph (GPC) indicated that the grafting reaction of GMA onto PLA took place successfully. In order to obtain the optimal GMA content used to graft onto PLA chain, the GMA content was varied into 5, 10 and 15 wt% of PLA. GMA content of 10 wt% was found to give the highest elongation at break of glycidyl methacrylate grafted poly (lactic acid) (PLA-g-GMA). The weight-average molecular weights, the number-average molecular weights and polydispersity index of PLA increased after grafting with GMA. After grafting, the brittle fracture behaviour of PLA was changed to ductile fracture behaviour of PLA-g-GMA. With its superior mechanical properties compared to those of pure PLA, PLA-g-GMA can be considered to be used as a new generation of biodegradable polymer, which can be applied in many industrial applications.

scholarly journals Tensile Properties of Poly Lactic Acid (PLA)–Tungsten Trioxide (WO3) Nano Composites for 3D Printing Process

2019 ◽  
Vol 9 (1) ◽  
pp. 2511-2513
Keyword(s):  
Lactic Acid ◽  
3D Printing ◽  
Tensile Properties ◽  
Tungsten Trioxide ◽  
Control Sample ◽  
Industrial Applications ◽  
Poly Lactic Acid ◽  
Nano Composites ◽  
Aliphatic Polyesters ◽  
Printing Process

Poly Lactic Acid (PLA) is one of the most crucial aliphatic polyesters which is considered as one of the favourable options in environmentally friendly thermoplastic polymers since it could be biodegraded in certain conditions. PLA has been extensively used in the packaging, electronic industries, and household applications. As a result, the improvement of mechanical properties of PLA is necessary, which can be achieved through heat resistant materials such as Tungsten trioxide (WO3 ). The objective of this research was to investigate the tensile properties of PLA-WO3 . The 3D printing process was employed to fabricate PLA-WO3 (3wt% WO3 ) and Neat PLA (control sample). The tensile test was conducted to investigate the effect of WO3 to the PLA. The results show that the tensile properties of PLA-WO3 were improved up to 75% as compared to Neat PLA. This result shows positive indication to the PLA-WO3 for many industrial applications.

scholarly journals Mass Production of Uniformly Sized Air-Filled Poly-Lactic Acid Microcapsules Made from Microbubble Templates

2019 ◽  
Vol 16 (7) ◽  
pp. 213-224
Author(s):  
Jay Molino ◽  
Svetlana Jojlova ◽  
Hirofumi Daiguji ◽  
Fumio Takemura
Keyword(s):  
Lactic Acid ◽  
Mass Production ◽  
Poly Lactic Acid

End-of-life evaluation and biodegradation of Poly(lactic acid) (PLA)/Polycaprolactone (PCL)/Microcrystalline cellulose (MCC) polyblends under composting conditions

Chemosphere ◽  
2020 ◽  
Vol 247 ◽  
pp. 125875 ◽  
Author(s):  
Naba Kumar Kalita ◽  
Siddharth Mohan Bhasney ◽  
Chethana Mudenur ◽  
Ajay Kalamdhad ◽  
Vimal Katiyar
Keyword(s):  
Lactic Acid ◽  
End Of Life ◽  
Microcrystalline Cellulose ◽  
Poly Lactic Acid ◽  
Life Evaluation

scholarly journals Chemical Degradation of End-of-Life Poly(lactic acid) into Methyl Lactate by a Zn(II) Complex

2020 ◽  
Vol 59 (24) ◽  
pp. 11149-11156 ◽  
Author(s):  
Luis A. Román-Ramírez ◽  
Paul McKeown ◽  
Chanak Shah ◽  
Joshua Abraham ◽  
Matthew D. Jones ◽  
...  
Keyword(s):  
Lactic Acid ◽  
End Of Life ◽  
Chemical Degradation ◽  
Poly Lactic Acid ◽  
Methyl Lactate
Sign in / Sign up

Export Citation Format

Share Document