Thermal and mechanical properties of cassava and pineapple flours-filled PLA bio-composites

Lee, Byoung Ho; Kim, Hyun Joong; Sriroth, Klanarong; Dorgan, John R.

doi:10.1007/s10973-011-1350-y

Cited by 88 publications

(76 citation statements)

References 26 publications

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“…The authors explained that the improvement in the storage modulus was due to an enhancement of the interfacial adhesion between PLA–PBAT and kenaf fiber. Another study reported that the addition of 3 wt% maleic anhydride grafted PLA to PLA/cassava root flour, increasing the storage modulus due to the enhancement of the compatibility and interfacial interaction between the filler and neat PLA . In our study, the increase in the storage modulus can be attributed to the enhancement of the interfacial adhesion between the polyester matrix and lignin.…”

Section: Resultssupporting

confidence: 66%

Thermo‐mechanical characterization of bioblends from polylactide and poly(butylene adipate‐co‐terephthalate) and lignin

Abdelwahab

Taylor

Misra

et al. 2015

Macro Materials & Eng

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This paper investigates the effect of the incorporation of organosolv lignin and a chain extender on the compatibility between polylactide and poly(butylene adipate-co-terephthalate). Bioblends were processed using melt extrusion and injection molding techniques. A reaction was observed during the melt processing as the force increased as the amount of ADR in the formulation increased. This reaction was investigated by Fourier transform infrared spectroscopy. The morphological images showed a good dispersion and an absence of phase separation by the inclusion of the chain extender. The incorporation of the chain extender enhanced the tensile properties and modulus characterization of the bioblends. Dynamic mechanical analysis and rheological characterization revealed that the addition of chain extender increased the storage modulus of the bioblends. Differential scanning calorimetry analysis showed a good miscibility between PLA and PBAT in the presence of OL and the chain extender, while thermogravimetric analysis showed enhancement in the thermal stability by inclusion of the chain extender.

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Section: Resultssupporting

confidence: 66%

Thermo‐mechanical characterization of bioblends from polylactide and poly(butylene adipate‐co‐terephthalate) and lignin

Abdelwahab

Taylor

Misra

et al. 2015

Macro Materials & Eng

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“…Load transfer from particles to the matrix is not good due to the lack of interaction between the dispersed HSF particles and the surrounding PLA matrix so that, dispersed particles act as stress concentrators. As the hazelnut shell content increases, the matrix-particle continuity is lost in a great extent and this leads to early fracture [2,6,7,9,11,12,17,27,44]. ).…”

Section: Cmentioning

confidence: 99%

“…PLA (medical grade) is also used for biomedical applications such as resorbable stitches, stents, drug delivery carriers, etc. [6][7][8][9][10][11][12][13][14][15] As PLA offers similar properties to some commodities, one attracting application is its use as matrix in fully biodegradable wood plastic composites (WPCs) which are composed of a polymer matrix and a lignocellulosic filler thus leading to materials with similar appearance to wood. In the last decades an increasing interest on natural fiber reinforced plastics (NFRPs) with lignocellulosic fibers, such as hemp, jute, kenaf, flax, henequen, Posidonia oceanica seaweed, etc.…”

Section: Introductionmentioning

confidence: 99%

Manufacturing and properties of biobased thermoplastic composites from poly(lactid acid) and hazelnut shell wastes

Balart

Boronat

et al. 2016

Polymer Composites

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Poly(lactic acid), PLA‐based green composites were obtained with hazelnut shell flour (HSF) derived from the food industry thus leading to fully biodegradable materials with attracting properties. The hazelnut shell flour content varied in the 10–40 wt% range. An increase in the degree of crystallinity with increasing HSF was detected, mainly due to the nucleating effect of lignocellulosic particles. The thermodimensional stability was noticeably improved with increasing HSF amount as evidenced by a remarkable decrease in the coefficient of thermal–linear expansion. Increasing HSF leads to stiffer materials as HSF particles act as interlock points that restrict polymer chain motion. Addition of hazelnut shell flour as filler in PLA‐based green composites leads to fully biodegradable composites with balanced mechanical and thermal properties. Furthermore, it gives a solution to upgrade wastes from the hazelnut industry and contributes to lower the cost of PLA‐based materials. POLYM. COMPOS., 39:848–857, 2018. © 2016 Society of Plastics Engineers

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“…This filler can be grinded to give a lignocellulosic flour that can provide wood like appearance to polymer composites. It can be used as reinforcement/filler with a wide variety of polymeric matrices to give wood-like materials that contribute to preserve forestry resources [10][11][12][13][14][15][16][17][18][19][20][21]. Although these composites are attractive for some technical uses, one important drawback is their excessive fragility, which results from the high intrinsic account the relatively low hydrophilic nature of PLA and the extremely high hydrophilic nature of the lignocellulosic filler, poor matrixparticle interactions are achieved thus leading to stress concentration phenomena that also contributes to fragility.…”

mentioning

confidence: 99%

Processing and characterization of high environmental efficiency composites based on PLA and hazelnut shell flour (HSF) with biobased plasticizers derived from epoxidized linseed oil (ELO)

Balart

Fombuena

Fenollar

et al. 2016

Composites Part B: Engineering

138

109

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interactions so that indicating that ELO also provides a coupling effect between PLA matrix and HSF filler. ELO addition leads to a decrease in storage modulus (G') obtained by dynamic mechanical thermal analysis (DMTA) in torsion mode thus giving clear evidence of the plasticization effect of ELO. Overall, the use of ELO in PLA/HSF composites is an attracting way to improve the low intrinsic fragility of these green Injection moulding.1.-Introduction.In the last years, a remarkable increase in the development of high environmentally friendly materials has been detected in the field of polymers and polymer composites. The high concern of society about environment protection has promoted the development of new "eco", "bio" or "green" materials. which results from the high intrinsic account the relatively low hydrophilic nature of PLA and the extremely high hydrophilic nature of the lignocellulosic filler, poor matrixparticle interactions are achieved thus leading to stress concentration phenomena that also contributes to fragility. For this reasons, research on how to reduce fragility of PLA-based composites is being investigated. One approach is focused on the use of compatible plasticizers for PLA and another approach considers the use of compatibilizer agents to act as a bridge between the hydrophobic PLA matrix and the highly hydrophilic surrounding particles.In general terms, the use of plasticizers lead to a decrease in the PLA glass transition temperature (Tg PLA); they also favor cold crystallization and the resulting material is more flexible. On the other hand, the use of coupling agents or compatibilizers provides intense PLA matrix-lignocellulosic filler interactions that contribute to decrease fragility.Chemical coupling agents such as N,N-(1,3-phenylene dimaleimide) and 1,1- The main aim of this study is to reduce the high intrinsic fragility of poly(lactic acid), PLA -hazelnut shell flour (HSF) by using a biobased plasticizer from epoxidized linseed oil (ELO). Mechanical, thermal and thermomechanical properties of PLA -HSF green composites are evaluated in terms of the epoxidized linseed oil (ELO) load in the 0 -22.5 wt.% range.2.-Experimental. 2.1.-Materials.Poly(lactic acid), PLA commercial grade Ingeo 6201D was supplied by NatureWorks LLC (Minnesota, USA). This grade is characterized by a melt flow index in the 15 -30 g/10 min range and a density of 1.24 g cm -3 .Hazelnut shell waste (Corylus avellana) was obtained from the food industry and subjected to a grinding process to an average particle size of 63 m to give a homogeneous flour (hazelnut shell flour, HSF). Hazelnut shell was grinded in an ultra centrifugal mill from Retsch GmbH (Hann, Germany) at a rotating speed of 10000 rpm.Epoxidized linseed oil (ELO), CAS number 8016-11-3 was used as plasticizer in at 20 ºC and a viscosity of 8-11 p at 25 ºC. It shows high thermal stability with a flammability temperature of 287 ºC and it is not water-soluble. The average fatty acid profile is: 3-5% stearic acid, 5-7% palmitic acid, 14-20% linoleic ...

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Thermal and mechanical properties of cassava and pineapple flours-filled PLA bio-composites

Cited by 88 publications

References 26 publications

Thermo‐mechanical characterization of bioblends from polylactide and poly(butylene adipate‐co‐terephthalate) and lignin

Thermo‐mechanical characterization of bioblends from polylactide and poly(butylene adipate‐co‐terephthalate) and lignin

Manufacturing and properties of biobased thermoplastic composites from poly(lactid acid) and hazelnut shell wastes

Processing and characterization of high environmental efficiency composites based on PLA and hazelnut shell flour (HSF) with biobased plasticizers derived from epoxidized linseed oil (ELO)

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