Catalytic Amination of Polylactic Acid to Alanine

2021 ◽  
Author(s):  
Shuheng Tian ◽  
Yuchen Jiao ◽  
Zirui Gao ◽  
Yao Xu ◽  
Linke Fu ◽  
...  
Keyword(s):  
Polylactic Acid ◽  
Catalytic Amination

Polylactic acid “LACEA”

2002 ◽  
Author(s):  
Nobuyuki Kawashima ◽  
Shinji Ogawa ◽  
Shoji Obuchi ◽  
Mitsunori Matsuo ◽  
Tadashi Yagi
Keyword(s):  
Polylactic Acid

Preparation of visualized iodized oil-5-fluorouracil loaded polylactic acid microspheres

2010 ◽  
Vol 30 (10) ◽  
pp. 1100-1103 ◽  
Author(s):  
Xin-xia WANG ◽  
Li ZHANG ◽  
Gui-chen ZHOU ◽  
Guo-qing ZHANG ◽  
Ying LU ◽  
...  
Keyword(s):  
Polylactic Acid ◽  
Iodized Oil

Preparation and characterization of hydroxyapatite-polylactic acid HA-PLA composite film

2016 ◽  
Vol 33 (1) ◽  
pp. 10 ◽  
Author(s):  
Qiuhua Yuan ◽  
Jianbo Wu ◽  
Caoping Qin ◽  
Zhiwei Guo ◽  
Jiayu Liu ◽  
...  
Keyword(s):  
Composite Film ◽  
Polylactic Acid

Nghiên cứu chế tạo scaffold polylactic acid bằng phương pháp tách pha dung môi

2019 ◽  
Vol Tập 55, Số 4 ◽  
pp. 82
Author(s):  
Hồ Quốc Phong ◽  
Huỳnh Liên Hương ◽  
Trần Sỹ Nam ◽  
Tào Thế Dương
Keyword(s):  
Polylactic Acid

High thermal conductivity polylactic acid composite for 3D printing: Synergistic effect of graphene and alumina

2020 ◽  
Vol 31 (6) ◽  
pp. 1291-1299 ◽  
Author(s):  
Jun Jiang ◽  
Shuangqiao Yang ◽  
Linhuan Li ◽  
Shibing Bai
Keyword(s):  
Thermal Conductivity ◽  
3D Printing ◽  
Synergistic Effect ◽  
Polylactic Acid ◽  
High Thermal Conductivity

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.

scholarly journals The Impact of Filler Geometry on Polylactic Acid-Based Sustainable Polymer Composites

Molecules ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 149
Author(s):  
Karol Leluk ◽  
Stanisław Frąckowiak ◽  
Joanna Ludwiczak ◽  
Tomasz Rydzkowski ◽  
Vijay Kumar Thakur
Keyword(s):  
Polymer Composites ◽  
Polylactic Acid ◽  
Matrix Material ◽  
Chemical Properties ◽  
Precipitated Calcium Carbonate ◽  
Cellulose Fibres ◽  
Shape Factors ◽  
Pure Cellulose ◽  
Physico Chemical ◽  
The Impact

Recently, biocomposites have emerged as materials of great interest to the scientists and industry around the globe. Among various polymers, polylactic acid (PLA) is a popular matrix material with high potential for advanced applications. Various particulate materials and nanoparticles have been used as the filler in PLA based matrix. One of the extensively studied filler is cellulose. However, cellulose fibres, due to their hydrophilic nature, are difficult to blend with a hydrophobic polymer matrix. This leads to agglomeration and creates voids, reducing the mechanical strength of the resulting composite. Moreover, the role of the various forms of pure cellulose and its particle shape factors has not been analyzed in most of the current literature. Therefore, in this work, materials of various shapes and shape factors were selected as fillers for the production of polymer composites using Polylactic acid as a matrix to fill this knowledge gap. In particular, pure cellulose fibres (three types with different elongation coefficient) and two mineral nanocomponents: precipitated calcium carbonate and montmorillonite were used. The composites were prepared by a melt blending process using two different levels of fillers: 5% and 30%. Then, the analysis of their thermomechanical and physico-chemical properties was carried out. The obtained results were presented graphically and discussed in terms of their shape and degree of filling.

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