Assessment of mechanical performance, thermal stability and water resistance of novel conductive poly(lactic acid)/modified natural rubber blends with low loading of polyaniline

2018 ◽  
Vol 67 (8) ◽  
pp. 1070-1080 ◽  
Author(s):  
Dalila Shahdan ◽  
Ruey S Chen ◽  
Sahrim Ahmad ◽  
Farrah D Zailan ◽  
Adilah Mat Ali
Keyword(s):  
Thermal Stability ◽  
Lactic Acid ◽  
Natural Rubber ◽  
Water Resistance ◽  
Mechanical Performance ◽  
Poly Lactic Acid ◽  
Rubber Blends

scholarly journals Hybrid Biocomposites Based on Poly(Lactic Acid) and Silica Aerogel for Food Packaging Applications

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4910 ◽  
Author(s):  
Alejandro Aragón-Gutierrez ◽  
Marina P. Arrieta ◽  
Mar López-González ◽  
Marta Fernández-García ◽  
Daniel López
Keyword(s):  
Thermal Stability ◽  
Lactic Acid ◽  
Silica Aerogel ◽  
Food Packaging ◽  
Mechanical Performance ◽  
Composite Films ◽  
Barrier Properties ◽  
Extrusion Process ◽  
Poly Lactic Acid ◽  
Barrier Performance

Bionanocomposites based on poly (lactic acid) (PLA) and silica aerogel (SiA) were developed by means of melt extrusion process. PLA-SiA composite films were plasticized with 15 wt.% of acetyl (tributyl citrate) (ATBC) to facilitate the PLA processability as well as to attain flexible polymeric formulations for films for food packaging purposes. Meanwhile, SiA was added in four different proportions (0.5, 1, 3 and 5 wt.%) to evaluate the ability of SiA to improve the thermal, mechanical, and barrier performance of the bionanocomposites. The mechanical performance, thermal stability as well as the barrier properties against different gases (carbon dioxide, nitrogen, and oxygen) of the bionanocomposites were evaluated. It was observed that the addition of 3 wt.% of SiA to the plasticized PLA-ATBC matrix showed simultaneously an improvement on the thermal stability as well as the mechanical and barrier performance of films. Finally, PLA-SiA film formulations were disintegrated in compost at the lab-scale level. The combination of ATBC and SiA sped up the disintegration of PLA matrix. Thus, the bionanocomposites produced here show great potential as sustainable polymeric formulations with interest in the food packaging sector.

Effectiveness of cellulosic Agave angustifolia fibres on the performance of compatibilised poly(lactic acid)-natural rubber blends

Cellulose ◽  
2019 ◽  
Vol 26 (5) ◽  
pp. 3205-3218 ◽  
Author(s):  
Noor Afizah Rosli ◽  
Ishak Ahmad ◽  
Farah Hannan Anuar ◽  
Ibrahim Abdullah
Keyword(s):  
Lactic Acid ◽  
Natural Rubber ◽  
Poly Lactic Acid ◽  
Rubber Blends ◽  
Agave Angustifolia

scholarly journals Tailoring toughness of fully biobased poly(lactic acid)/natural rubber blends through dynamic vulcanization

2018 ◽  
Vol 65 ◽  
pp. 249-255 ◽  
Author(s):  
Wan-Jie Si ◽  
Wen-Qiang Yuan ◽  
Yi-Dong Li ◽  
Yu-Kun Chen ◽  
Jian-Bing Zeng
Keyword(s):  
Lactic Acid ◽  
Natural Rubber ◽  
Poly Lactic Acid ◽  
Dynamic Vulcanization ◽  
Rubber Blends

scholarly journals Poly(Lactic Acid)/Natural Rubber Blends

2017 ◽  
Vol 885 ◽  
pp. 298-302 ◽  
Author(s):  
Sándor Hajba ◽  
Tamás Tábi
Keyword(s):  
Lactic Acid ◽  
Natural Rubber ◽  
Poly Lactic Acid ◽  
Flexural Properties ◽  
Application Field ◽  
Rubber Blends ◽  
The One ◽  
Internal Mixer

Nowadays biopolymers are in the focus of many research and Poly (lactic acid) (PLA) is the one of the candidates of this field. The rigid behavior of PLA limits its application field, thus it is mostly used for rigid packing. Our research aim is to increase PLA ductility while keeping the biodegradability as much as possible. In our study, PLA was melt mixed in an internal mixer with 5, 10, 20 and 30 wt% natural rubber. It was possible to increase the toughness to a three time higher value compared to neat PLA while the tensile and flexural properties only decreased maximum 30%.

Thermomechanical Study and Thermal Behavior of Plasticized Poly(Lactic Acid) Nanocomposites

2021 ◽  
Vol 317 ◽  
pp. 333-340
Author(s):  
Mohammed Zorah ◽  
Izan Roshawaty Mustapa ◽  
Norlinda Daud ◽  
Nahida Jumah ◽  
Nur Ain Syafiqah Sudin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Lactic Acid ◽  
Thermal Behavior ◽  
Food Packaging ◽  
Mechanical Performance ◽  
Poly Lactic Acid ◽  
Solvent Casting ◽  
Thermal And Mechanical Properties ◽  
Hot Press

Poly (lactic acid) (PLA) is a useful alternative to petrochemical commodity material used in such as in food packaging industries. Due to its inherent brittleness, low thermal stability, and poor crystallization, it needs to improve its properties, namely in terms of thermal and mechanical performance. The plasticized PLA composites reinforced with nanofiller were prepared by solvent casting and hot press methods. Thermal and mechanical properties, as well as the crystallinity study of these nanocomposites, were investigated to study the effect of tributyl citrate (TBC) and TiO2 on the PLA composites. The addition of TBC improved the flexibility and crystallinity of the composites. Reinforcement of TiO2 was found as a practical approach to improve the mechanical properties, thermal stability, and enhanced crystalline ability for plasticized PLA nanocomposites. Based on the results achieved in this study, the composite with 3.5% nanofiller (pPLATi3.5) presented the optimum set of mechanical properties and improved thermal stability.

Preparation and Properties of Corn Gluten Meal/Poly (Lactic Acid) Composite

2011 ◽  
Vol 415-417 ◽  
pp. 1620-1625
Author(s):  
Ye Chen ◽  
Ning Zhang ◽  
Guan Yu Wang ◽  
Yue Du ◽  
Seiichiro Isobe
Keyword(s):  
Thermal Stability ◽  
Lactic Acid ◽  
Water Resistance ◽  
Poly Lactic Acid ◽  
Gravimetric Analysis ◽  
Corn Gluten Meal ◽  
Screw Extruder ◽  
Glycerol Water ◽  
Single Screw Extruder ◽  
Corn Gluten

Blends of Corn gluten meal (CGM) and poly (lactic acid) (PLA) plasticized with glycerol, water and ethanol, were extruded into pellets using single-screw extruder, and the pellets were compression-molded into composites, and the tensile strength, water resistance, thermal stability and morphology of the composite were evaluated. The results showed that PLA reinforced the composite, improved the water resistance. The structure of composite was observed by scanning electron microscopy (SEM), it was showed that PLA formed a network structure, and the modified CGM inlay in network. The result of thermal gravimetric analysis (TGA) considered that the composite could keep thermal stability below 180 °C.

Preparation and Properties of Poly(Lactic Acid)/Epoxidized Natural Rubber/Nano-Silica Composites

2018 ◽  
Vol 773 ◽  
pp. 20-24
Author(s):  
Auttapol Mongkolvai ◽  
Saowaroj Chuayjuljit ◽  
Phasawat Chaiwutthinan ◽  
Amnouy Larpkasemsuk ◽  
Anyaporn Boonmahitthisud
Keyword(s):  
Thermal Stability ◽  
Lactic Acid ◽  
Impact Strength ◽  
Natural Rubber ◽  
Silica Nanoparticle ◽  
Performic Acid ◽  
Epoxidized Natural Rubber ◽  
Poly Lactic Acid ◽  
Nano Silica ◽  
In Situ Epoxidation

This study aimed to improve the toughness property of poly(lactic acid) (PLA) by incorporating epoxidized natural rubber (ENR), an elastomeric material and silica nanoparticle (nSiO2), a spherical inorganic nanofiller. ENR with 30mol% epoxidation (ENR 30) was first prepared via in situ epoxidation of natural rubber by performic acid generated from the reaction between formic acid and hydrogen peroxide in the latex stage. The PLA was melt blended with three weight percentages (10, 20 and 30wt%) of ENR in an internal mixer, followed by a compression molding. The effects of ENR loadings on the mechanical properties and thermal stability of the blends were first investigated. It was found that the addition of ENR 30 increased the toughness property of the blends. The blend at 20wt% ENR 30 exhibited the highest impact strength and elongation at break, and so was selected for preparing nanocomposites with three loadings (1, 2 and 3 parts per hundred of resins) of nano-silica (nSiO2). The results showed that all PLA/ENR 30/nSiO2 nanocomposites exhibited higher impact strength and thermal stability than the neat 80/20 PLA/ENR 30 blend.

Sign in / Sign up

Export Citation Format

Share Document