Bio-based green composites with high performance from poly(lactic acid) and surface-modified microcrystalline cellulose

2012 ◽  
Vol 22 (31) ◽  
pp. 15732 ◽  
Author(s):  
Lin Xiao ◽  
Yiyong Mai ◽  
Feng He ◽  
Longjiang Yu ◽  
Limin Zhang ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Microcrystalline Cellulose ◽  
High Performance ◽  
Poly Lactic Acid ◽  
Green Composites ◽  
Surface Modified

High-Performance Green Composites of Poly(lactic acid) and Waste Cellulose Fibers Prepared by High-Shear Thermokinetic Mixing

2017 ◽  
Vol 56 (30) ◽  
pp. 8568-8579 ◽  
Author(s):  
Oguzhan Oguz ◽  
Kaan Bilge ◽  
Eren Simsek ◽  
Mehmet Kerem Citak ◽  
Abdulmounem Alchekh Wis ◽  
...  
Keyword(s):  
Lactic Acid ◽  
High Performance ◽  
Cellulose Fibers ◽  
Poly Lactic Acid ◽  
High Shear ◽  
Green Composites ◽  
Waste Cellulose

scholarly journals Fracture Toughness Improvement of Poly(lactic acid) Reinforced with Poly(ε-caprolactone) and Surface-Modified Silicon Carbide

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Jie Chen ◽  
Tian-Yi Zhang ◽  
Fan-Long Jin ◽  
Soo-Jin Park
Keyword(s):  
Fracture Toughness ◽  
Silicon Carbide ◽  
Lactic Acid ◽  
Poly Lactic Acid ◽  
External Energy ◽  
Solution Blending ◽  
Blending Method ◽  
Sic Whiskers ◽  
Sic Composites ◽  
Surface Modified

In this study, bio-based poly(lactic acid) (PLA)/polycaprolactone (PCL) blends and PLA/PCL/silicon carbide (SiC) composites were prepared using a solution blending method. The surface of the SiC whiskers was modified using a silane coupling agent. The effects of the PCL and SiC contents on the flexural properties, fracture toughness, morphology of PLA/PCL blends, and PLA/PCL/SiC composites were investigated using several techniques. Both the fracture toughness and flexural strength of PLA increased by the introduction of PCL and were further improved by the formation of SiC whiskers. Fracture surfaces were observed by scanning electron microscopy, which showed that the use of PCL as a reinforcing agent induces plastic deformation in the PLA/PCL blends. The SiC whiskers absorbed external energy because of their good interfacial adhesion with the PLA matrix and through SiC-PLA debonding in the PLA/PCL/SiC composites.

Bio-Composites Based on Poly(lactic acid) Containing Mallow and Eucalyptus Surface Modified Natural Fibers

2018 ◽  
Vol 26 (9) ◽  
pp. 3785-3801 ◽  
Author(s):  
Rafael da Silva Araújo ◽  
Maria de Fátima Vieira Marques ◽  
Priscila Ferreira de Oliveira ◽  
Claudinei Calado Rezende
Keyword(s):  
Lactic Acid ◽  
Natural Fibers ◽  
Poly Lactic Acid ◽  
Surface Modified

Poly(Lactic Acid) Hybrid Green Composites

2016 ◽  
pp. 149-166 ◽  
Author(s):  
Mahbub Hasan ◽  
Azman Hassan ◽  
Zainoha Zakaria
Keyword(s):  
Lactic Acid ◽  
Poly Lactic Acid ◽  
Green Composites

Mechanical properties of wood flour/poly (lactic acid) composites coupled with waterborne silane-polyacrylate copolymer emulsion

Holzforschung ◽  
2016 ◽  
Vol 70 (5) ◽  
pp. 439-447 ◽  
Author(s):  
Ru Liu ◽  
Shupin Luo ◽  
Jinzhen Cao ◽  
Yu Chen
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
High Performance ◽  
Coupling Effect ◽  
Wood Flour ◽  
Flexural Modulus ◽  
Coupling Agents ◽  
Poly Lactic Acid ◽  
Effective Coupling ◽  
Methacryloxypropyl Trimethoxysilane

Abstract Wood flour/polylactic acid (WF/PLA) composites were produced with a WF content of 50% based on three types of waterborne polyacrylate (PA) emulsions including a PA homopolymer emulsion and two types of silane-PA copolymer emulsions as coupling agents. Two silanes were in focus, namely, γ-methacryloxypropyl- trimethoxysilane (silane-1) and vinyltrimethoxysilane (silane-2). The emulsions and the modified WFs were characterized, and the effects were investigated in terms of emulsion type and their loading levels on the mechanical properties of WF/PLA composites. (1) Both types of silanes could be successfully copolymerized with PA to form stable emulsions. (2) With increasing PA loading, the mechanical properties (except for flexural modulus) of the composites increased at first before reaching the maximum values at 4% PA loading and then the properties worsened. However, these values were larger than those of pure composites, especially in cases when PA-silane emulsions were applied. (3) PA modified with silane-1 showed the best coupling effect among all the three PA emulsions. The results can be interpreted that PA emulsions are effective coupling agents for the preparation of high-performance WPCs.

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