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

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 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%.

Characterization of Compatibilizing Effect of Organoclay in Poly(lactic acid) and Natural Rubber Blends by FT-Rheology

2016 ◽  
Vol 49 (7) ◽  
pp. 2832-2842 ◽  
Author(s):  
Hyun Geun Ock ◽  
Kyung Hyun Ahn ◽  
Seung Jong Lee ◽  
Kyu Hyun
Keyword(s):  
Lactic Acid ◽  
Natural Rubber ◽  
Poly Lactic Acid ◽  
Rubber Blends ◽  
Compatibilizing Effect

scholarly journals Hydrogenated Liquid Natural Rubber for Compatibility Enhancement of Poly(lactic acid) and Natural Rubber Blends

2021 ◽  
Vol 50 (10) ◽  
pp. 3003-3014
Author(s):  
Mohamad Shahrul Fizree Idris ◽  
Nurfarhana Mohd Mustaffarizan ◽  
Siti Fairus M. Yusoff
Keyword(s):  
Lactic Acid ◽  
Reaction Time ◽  
Natural Rubber ◽  
Weight Ratio ◽  
Hydrogenation Reaction ◽  
Quadratic Model ◽  
Coefficient Of Determination ◽  
Poly Lactic Acid ◽  
Rubber Blends ◽  
Liquid Natural Rubber

Non-catalytic hydrogenation of liquid natural rubber (LNR) via thermal decomposition of 2,4,6-trimethylbenzenesulfonylhydrazide (MSH) is reported in this study. Parameter studies of the hydrogenation reaction were performed by utilizing the combination of response surface methodology and central composite rotatable design (RSM/CCRD). The effects of each variable and the interaction between two variables (i.e. the MSH:LNR weight ratio and reaction time) were studied. Statistical analysis showed that the reaction time had significantly affected the hydrogenation percentage. A reduced quadratic model equation with the coefficient of determination (R2) value of 0.9875 was developed. The optimized condition as predicted by the software was compared with the experimental data, which deviated in only 0.67, hence indicating that this model was reliable and able to predict the hydrogenation percentage accurately. Fourier-transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectroscopies were used to characterize the microstructure of LNR and hydrogenated liquid natural rubber (HLNR). HLNR was then used as compatibilizer to improve the miscibility of poly(lactic acid)/natural rubber blends. With an addition of 4% HLNR, the tensile strength and impact strength of the blends were slightly improved.

scholarly journals Dynamic mechanical properties and morphology characteristics of rubber-toughened poly(lactic acid)

2019 ◽  
Vol 90 ◽  
pp. 01001
Author(s):  
Mohd Shaiful Zaidi Mat Desa ◽  
Azman Hassan ◽  
Agus Arsad ◽  
Masleeyati Yusop
Keyword(s):  
Lactic Acid ◽  
Natural Rubber ◽  
Storage Modulus ◽  
Dynamic Mechanical Properties ◽  
Poly Lactic Acid ◽  
Rubber Blends ◽  
Blending Method ◽  
Twin Screw ◽  
Lower Temperature ◽  
The Impact

This study investigates the effect of natural rubber (NR), epoxidised natural rubber (ENR), and core-shell rubber (CSR) as toughening agents for poly(lactic acid) (PLA). PLA/rubber blends were prepared by using melt blending method in a twin-screw extruder, with the content of rubbers was fixed at 5 wt. %. All PLA/rubber blends exhibited lower storage modulus compared to neat PLA. Two-stage storage modulus (E’) was also observed, where the first stage occurred at lower temperature corresponded to the glass transition temperature (Tg) of rubber components, whereas the second E’ corresponded to the Tg of PLA. The impact fracture surface of PLA/rubber blends also exhibited phase-separated morphology where the spherical-shaped rubber particles were clearly present in the PLA matrix.

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