Mechanical, barrier, and thermal properties of poly(lactic acid)/poly(trimethylene carbonate)/talc composite films

2013 ◽  
Vol 131 (6) ◽  
pp. n/a-n/a ◽  
Author(s):  
Yuyue Qin ◽  
Jiyi Yang ◽  
Minglong Yuan ◽  
Jing Xue ◽  
Jianxin Chao ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Thermal Properties ◽  
Composite Films ◽  
Poly Lactic Acid ◽  
Trimethylene Carbonate ◽  
Mechanical Barrier

Influence of extrusion screw speed on the properties of halloysite nanotube impregnated polylactic acid nanocomposites

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Chaitra Venkatesh ◽  
Yuanyuan Chen ◽  
Zhi Cao ◽  
Shane Brennan ◽  
Ian Major ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Thermal Properties ◽  
Composite Films ◽  
Polymer Melt ◽  
Poly Lactic Acid ◽  
Mechanical And Thermal Properties ◽  
Screw Speed ◽  
Halloysite Nanotube ◽  
The Past

Abstract Poly (lactic acid)/halloysite nanotube (PLA/HNT) nanocomposites have been studied extensively over the past few years owing to the interesting properties of the polymer, PLA, and the nanoclay, HNT, individually and as composites. In this paper, the influence of the screw speed during extrusion was investigated and was found to have a significant impact on the mechanical and thermal performance of the extruded PLA/HNT nanocomposites. To determine the effect of screw speed on PLA/HNT nanocomposites, 5 and 10 wt% of HNTs were blended into the PLA matrix through compounding at screw speeds of 40, 80, and 140 rpm. Virgin PLA was compounded for comparison. The resultant polymer melt was quench cooled onto a calendar system to produce composite films which were assessed for mechanical, thermal, chemical, and surface properties. Results illustrate that in comparison to 40 and 80 rpm, the virgin PLA when compounded at 140 rpm, indicated a significant increase in the mechanical properties. The PLA/HNT 5 wt% nanocomposite compounded at 140 rpm showed significant improvement in the dispersion of HNTs in the PLA matrix which in turn enhanced the mechanical and thermal properties. This can be attributed to the increased melt shear at higher screw speeds.

Tensile and Thermal Properties of Poly(lactic acid)/Eggshell Powder Composite Films

2014 ◽  
Vol 19 (3) ◽  
pp. 245-255 ◽  
Author(s):  
B. Ashok ◽  
S. Naresh ◽  
K. Obi Reddy ◽  
K. Madhukar ◽  
J. Cai ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Thermal Properties ◽  
Composite Films ◽  
Powder Composite ◽  
Poly Lactic Acid

Effect of cellulose nanocrystal polymorphs on mechanical, barrier and thermal properties of poly(lactic acid) based bionanocomposites

RSC Advances ◽  
2015 ◽  
Vol 5 (74) ◽  
pp. 60426-60440 ◽  
Author(s):  
Prodyut Dhar ◽  
Debashis Tarafder ◽  
Amit Kumar ◽  
Vimal Katiyar
Keyword(s):  
Lactic Acid ◽  
Thermal Properties ◽  
Cellulose Nanocrystals ◽  
Cellulose Nanocrystal ◽  
Poly Lactic Acid ◽  
Bamboo Pulp ◽  
Mechanical Barrier

Cellulose nanocrystals (CNCs) using different cellulose polymorphs have been fabricated from raw bamboo pulp. Their structural and morphological effects on the mechanical, barrier and thermal properties of poly(lactic acid) have been investigated.

The effect of carbon nanotubes-grafted lactide on the mechanical and thermal properties of poly (lactic acid) biocomposites

2017 ◽  
Vol 36 (9) ◽  
pp. 655-666 ◽  
Author(s):  
Gaihong Wu ◽  
Shuqiang Liu ◽  
Xiongying Wu ◽  
Xuemei Ding
Keyword(s):  
Carbon Nanotubes ◽  
Lactic Acid ◽  
Thermal Properties ◽  
Composite Films ◽  
Poly Lactic Acid ◽  
Mechanical And Thermal Properties ◽  
Wide Range ◽  
Ft Ir ◽  
The Fourier Transform ◽  
Flexible Fabrication

Poly(lactic acid) (PLA) derived from renewable crops is a promising substitute for petroleum-based products. Although PLA exhibits positive features, it also possesses drawbacks, such as brittleness, which hinder its extension in specific applications. In this study, lactide (LA) was used to graft carbon nanotubes (CNTs) to reinforce PLA. Under catalysis, LA was polymerized into PLA through ring-opening polymerization and simultaneously was grafted onto CNTs to obtain CNTs modified by LA (LA/CNTs). And the modified CNTs were used to prepare PLA composite films (LA/CNTs/PLA). Analysis of the Fourier transform infrared spectra (FT-IR) of the modified CNTs indicated that LA was grafted with the nanotubes. The scanning electron microscopy images showed that the modified CNTs were compatible and homogeneously dispersed in the PLA matrix. The excellent dispersibility and compatibility of the CNTs led to good interfacial adhesion, which directly enhanced the mechanical properties of PLA. The addition of CNTs also improved the thermal properties of PLA. This research aims to ameliorate the mechanical and thermal properties of PLA and provides basis for flexible fabrication of bio-based PLA materials for a wide range of applications.

scholarly journals Effect of High Pressure Treatment on Poly(lactic acid)/Nano–TiO2 Composite Films

Molecules ◽  
2018 ◽  
Vol 23 (10) ◽  
pp. 2621 ◽  
Author(s):  
Hai Chi ◽  
Wenhui Li ◽  
Chunli Fan ◽  
Cheng Zhang ◽  
Lin Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Lactic Acid ◽  
Composite Film ◽  
Composite Films ◽  
Barrier Properties ◽  
Poly Lactic Acid ◽  
Pressure Treatment ◽  
Nano Tio2 ◽  
High Pressure Treatment

The microstructure, thermal properties, mechanical properties and oxygen and water vapor barrier properties of a poly(lactic acid) (PLA)/nano-TiO2 composite film before and after high pressure treatment were studied. Structural analysis showed that the functional group structure of the high pressure treated composite film did not change. It was found that the high pressure treatment did not form new chemical bonds between the nanoparticles and the PLA. The micro-section of the composite film after high pressure treatment became very rough, and the structure was depressed. Through the analysis of thermal and mechanical properties, high pressure treatment can not only increase the strength and stiffness of the composite film, but also increase the crystallinity of the composite film. Through the analysis of barrier properties, it is found that the barrier properties of composite films after high pressure treatment were been improved by the applied high pressure treatment.

scholarly journals Characterization of Antimicrobial Poly (Lactic Acid)/Nano-Composite Films with Silver and Zinc Oxide Nanoparticles

Materials ◽  
2017 ◽  
Vol 10 (6) ◽  
pp. 659 ◽  
Author(s):  
Zhuangzhuang Chu ◽  
Tianrui Zhao ◽  
Lin Li ◽  
Jian Fan ◽  
Yuyue Qin
Keyword(s):  
Zinc Oxide ◽  
Lactic Acid ◽  
Zinc Oxide Nanoparticles ◽  
Composite Films ◽  
Poly Lactic Acid ◽  
Oxide Nanoparticles ◽  
Nano Composite
Sign in / Sign up

Export Citation Format

Share Document