Preparation, dynamic rheological behavior, crystallization, and mechanical properties of inorganic whiskers reinforced polylactic acid/hydroxyapatite nanocomposites

2016 ◽  
Vol 133 (18) ◽  
pp. n/a-n/a ◽  
Author(s):  
Zhuo Liu ◽  
Yinghong Chen ◽  
Weiwei Ding
Keyword(s):  
Mechanical Properties ◽  
Polylactic Acid ◽  
Rheological Behavior ◽  
Dynamic Rheological Behavior

Dynamic rheological behavior and mechanical properties of PVC/CPE/MAP-POSS nanocomposites

2012 ◽  
Vol 129 (1) ◽  
pp. 174-180 ◽  
Author(s):  
Yonggang Du ◽  
Jungang Gao ◽  
Jianbo Yang ◽  
Xiaoqian Liu
Keyword(s):  
Mechanical Properties ◽  
Rheological Behavior ◽  
Dynamic Rheological Behavior

Dynamic rheological behavior and mechanical properties of PVC/ACS blends

2013 ◽  
Vol 22 (4) ◽  
pp. 285-292 ◽  
Author(s):  
Jungang Gao ◽  
Jianbo Yang ◽  
Yonggang Du ◽  
Xiaoqian Liu
Keyword(s):  
Mechanical Properties ◽  
Rheological Behavior ◽  
Dynamic Rheological Behavior

Dynamic Rheological Behavior, Processability and Mechanical Properties of PVC/Butyl Acrylate-grafted-Methyl Methacrylate/Styrene Blends

Polymer Korea ◽  
2015 ◽  
Vol 39 (6) ◽  
pp. 852
Author(s):  
Yu Fan ◽  
Hailong Zhang ◽  
Guangfeng Wu ◽  
Huixuan Zhang
Keyword(s):  
Mechanical Properties ◽  
Methyl Methacrylate ◽  
Rheological Behavior ◽  
Butyl Acrylate ◽  
Dynamic Rheological Behavior

Dynamic rheological behavior and mechanical properties and of PVC/ASA blends

2012 ◽  
Vol 19 (11) ◽  
Author(s):  
Yong-gang Du ◽  
Jun-gang Gao ◽  
Jian-bo Yang ◽  
Xiao-qian Liu
Keyword(s):  
Mechanical Properties ◽  
Rheological Behavior ◽  
Dynamic Rheological Behavior

Dynamic Rheological Behavior and Mechanical Properties of PVC/O-POSS Nanocomposites

2012 ◽  
Vol 51 (9) ◽  
pp. 920-925 ◽  
Author(s):  
Yonggang Du ◽  
Jungang Gao ◽  
Jianbo Yang ◽  
Xiaoqian Liu
Keyword(s):  
Mechanical Properties ◽  
Rheological Behavior ◽  
Dynamic Rheological Behavior

scholarly journals Preparation of Long Sisal Fiber-Reinforced Polylactic Acid Biocomposites with Highly Improved Mechanical Performance

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1124
Author(s):  
Zhifang Liang ◽  
Hongwu Wu ◽  
Ruipu Liu ◽  
Caiquan Wu
Keyword(s):  
Mechanical Properties ◽  
Polylactic Acid ◽  
Mechanical Performance ◽  
Tensile Elongation ◽  
Sisal Fiber ◽  
Fiber Reinforced ◽  
Impact Performance ◽  
The Matrix ◽  
Blending Process ◽  
Extension Direction

Green biodegradable plastics have come into focus as an alternative to restricted plastic products. In this paper, continuous long sisal fiber (SF)/polylactic acid (PLA) premixes were prepared by an extrusion-rolling blending process, and then unidirectional continuous long sisal fiber-reinforced PLA composites (LSFCs) were prepared by compression molding to explore the effect of long fiber on the mechanical properties of sisal fiber-reinforced composites. As a comparison, random short sisal fiber-reinforced PLA composites (SSFCs) were prepared by open milling and molding. The experimental results show that continuous long sisal fiber/PLA premixes could be successfully obtained from this pre-blending process. It was found that the presence of long sisal fibers could greatly improve the tensile strength of LSFC material along the fiber extension direction and slightly increase its tensile elongation. Continuous long fibers in LSFCs could greatly participate in supporting the load applied to the composite material. However, when comparing the mechanical properties of the two composite materials, the poor compatibility between the fiber and the matrix made fiber’s reinforcement effect not well reflected in SSFCs. Similarly, the flexural performance and impact performance of LSFCs had been improved considerably versus SSFCs.

Graphene oxide crosslinker for the enhancement of mechanical properties of polylactic acid

2021 ◽  
Author(s):  
Majharul Islam Sujan ◽  
Stephen Don Sarkar ◽  
Chanchal Kumar Roy ◽  
Mohammad Ferdous ◽  
Ankur Goswami ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Polylactic Acid

scholarly journals Evaluation of the influence of design in the mechanical properties of honeycomb cores used in composite panels

2021 ◽  
pp. 146442072098519
Author(s):  
A Miranda ◽  
M Leite ◽  
L Reis ◽  
E Copin ◽  
MF Vaz ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polylactic Acid ◽  
Failure Modes ◽  
Industrial Applications ◽  
Sandwich Composite ◽  
Composite Panels ◽  
Distribution Analysis ◽  
Absorbed Energy ◽  
Fused Filament Fabrication ◽  
Subtractive Manufacturing

The aerospace, automotive, and marine industries are heavily reliant on sandwich panels with cellular material cores. Although honeycombs with hexagonal cells are the most commonly used geometries as cores, recently there have been new alternatives in the design of lightweight structures. The present work aims to evaluate the mechanical properties of metallic and polymeric honeycomb structures, with configurations recently proposed and different in-plane orientations, produced by additive and subtractive manufacturing processes. Structures with configurations such as regular hexagonal honeycomb (Hr), lotus (Lt), and hexagonal honeycomb with Plateau borders (Pt), with 0°, 45°, and 90° orientations were analyzed. To evaluate its properties, three-point bending tests were performed, both experimentally and by numerical modeling, by means of the finite element method. Honeycombs of two aluminum alloys and polylactic acid were fabricated. The structures produced in aluminum were obtained either by selective laser melting technology or by machining, while polylactic acid structures were obtained by material extrusion using fused filament fabrication. From the stress distribution analysis and the load–displacement curves, it was possible to evaluate the strength, stiffness, and absorbed energy of the structures. Failure modes were also analyzed for polylactic acid honeycombs. In general, a strong correlation was observed between numerical and experimental results. The results show that the stiffness and absorbed energy increase in the order, Hr, Pt, Lt, and with the orientation through the sequence, 45°, 90°, 0°. Thus, Lt structures with 0° orientation seem to be good alternatives to the traditional honeycombs used in sandwich composite panels for those industrial applications where low weight, high stiffness, and large energy-absorbing capacity are required.

scholarly journals Additive manufacturing of PLA-based scaffolds intended for bone regeneration and strategies to improve their biological properties

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 571-599
Author(s):  
Ricardo Donate ◽  
Mario Monzón ◽  
María Elena Alemán-Domínguez
Keyword(s):  
Mechanical Properties ◽  
Tissue Engineering ◽  
Additive Manufacturing ◽  
Bone Regeneration ◽  
Polylactic Acid ◽  
State Of The Art ◽  
Biological Properties ◽  
Design Stage ◽  
Bone Scaffolds ◽  
Regeneration Of Bone

AbstractPolylactic acid (PLA) is one of the most commonly used materials in the biomedical sector because of its processability, mechanical properties and biocompatibility. Among the different techniques that are feasible to process this biomaterial, additive manufacturing (AM) has gained attention recently, as it provides the possibility of tuning the design of the structures. This flexibility in the design stage allows the customization of the parts in order to optimize their use in the tissue engineering field. In the recent years, the application of PLA for the manufacture of bone scaffolds has been especially relevant, since numerous studies have proven the potential of this biomaterial for bone regeneration. This review contains a description of the specific requirements in the regeneration of bone and how the state of the art have tried to address them with different strategies to develop PLA-based scaffolds by AM techniques and with improved biofunctionality.

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