Potential of pine needles for PLA‐based composites

Sinha, Priyasheel; Mathur, Smita; Sharma, Pradeep; Kumar, Vijai

doi:10.1002/pc.24074

Cited by 18 publications

(7 citation statements)

References 33 publications

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“…The second issue with PLA is its relatively high cost. Therefore, low-cost natural fibers such as plant and animal fibers have been used to modify PLA to fabricate cost-efficient composite materials with improved toughness [ 6 , 7 ]. Among them, cellulose is one of the most abundant renewable natural polymers with enormous advantages, such as low density, worldwide availability, biodegradability, non-toxicity, and good mechanical properties [ 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Fracture Surface Morphology and Impact Strength of Cellulose/PLA Composites

Gao

Qiang

2017

Materials

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Polylactide (PLA)-based composite materials reinforced with ball-milled celluloses were manufactured by extrusion blending followed by injection molding. Their surface morphology from impact fracture were imaged with scanning electron microscopy (SEM) and investigated by calculating their fractal dimensions. Then, linear regression was used to explore the relationship between fractal dimension and impact strength of the resultant cellulose/PLA composite materials. The results show that filling the ball-milled celluloses into PLA can improve the impact toughness of PLA by a minimum of 38%. It was demonstrated that the fracture pattern of the cellulose/PLA composite materials is different from that of pristine PLA. For the resultant composite materials, the fractal dimension of the impact fractured surfaces increased with increasing filling content and decreasing particle size of the ball-milled cellulose particles. There were highly positive correlations between fractal dimension of the fractured surfaces and impact strength of the cellulose/PLA composites. However, the linearity between fractal dimension and impact strength were different for the different methods, due to their different R-squared values. The approach presented in this work will help to understand the structure–property relationships of composite materials from a new perspective.

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Section: Introductionmentioning

confidence: 99%

Fracture Surface Morphology and Impact Strength of Cellulose/PLA Composites

Gao

Qiang

2017

Materials

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“…Maleic anhydride is another coupling reagent used to increase the interfacial adhesion of biocomposites [100]. Partial removal of lignin on the henequen fibres increases the adsorption of the silane couplings and interaction among the fibre and the matrix [101]. The mechanical properties including tensile, flexural, impact strengths and tensile modulus of the biocomposites were improved several times on Jute fibre polypropylene composites using m-isopropenyl-α-α-dimethylbenzyl-isocyanate (m-TMI) as the coupling agent using grafting process.…”

Section: Chemical Modification Of Fibresmentioning

confidence: 99%

Opportunity of Non-Wood Forest Products in Biocomposites

Sharma¹

2022

Biocomposites

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In recent years industries are attempting to decrease their dependency on petroleum-based fuels and products due to increased environmental issues. The tremendous increase in production and use of plastics in every sector of life has led to huge plastic waste disposal problems and also an environmental threat. In order to prevail over the present scenario, the viable and cost-effective approaches are to prepare eco-friendly bio-composites based on non-wood forest products (NWFP), a part of forest wealth of the globe, especially natural fibres, agricultural wastes and extractives. Natural fibres and extractives have many advantages viz. low density, low cost, considerable toughness properties, nontoxicity, sustainability and biodegradability. NWFP based composites may be utilized to produce non-structural parts for diverse applications in various industries as high-performance materials with interesting properties for specific applications viz. furniture, thermal, acoustic insulations and automotive industries etc. In the present chapter, opportunities of extractives, cellulosic and lignocellulosic fibres from non-wood forest products in Bio-composites will be discussed.

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“…27 Nevertheless, the hydrophobicity, brittleness and slow degradation rate of PLA limit its clinical application in the urinary system. 28–30 At the same time, it has been reported that PCL was flexible, high elongation at break and similar processing temperature to PLA. 31 In addition, the polyether structure of mPEG enabled itself to couple a large number of water molecules and reduce its friction coefficient, thereby reducing the adhesion of encrustation on the surface of the ureter stents.…”

Section: Introductionmentioning

confidence: 97%

A new hydrophilic biodegradable ureteral stent restrain encrustation both in vitro and in vivo

Chen

Xiong

2020

J Biomater Appl

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Ureteral stents have been widely used as biomedical devices to treat some urological diseases for several decades. However, the encrustation complications hamper the long-time clinical use of the ureteral stents. In this work, a new type of biodegradable material for the ureteral stents, methoxypoly(ethylene glycol)-block-poly(L-lactide-ran-Ɛ-caprolactone) (mPEG-PLACL), is evaluated to overcome this problem. The results show that the hydrophilicity and degradation rate in artificial urine of mPEG-PLACL are both significantly increased. It is worth noting that the mPEG-PLACL shows a lower amount of encrustation after immersing the stents in the dynamic urinary extracorporeal circulation (DUEC) model for 7 days. In addition, 71% Ca and 92% Mg are inhibited in vivo by quantitative analysis. Pathological analysis exhibit that the mPEG-PLACL cause less diffuse mucosal hyperplasia after 7 weeks of implantation. All the results indicate that this new type of biodegradable material had an excellent potential for the ureteral stents in the future.

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Potential of pine needles for PLA‐based composites

Cited by 18 publications

References 33 publications

Fracture Surface Morphology and Impact Strength of Cellulose/PLA Composites

Fracture Surface Morphology and Impact Strength of Cellulose/PLA Composites

Opportunity of Non-Wood Forest Products in Biocomposites

A new hydrophilic biodegradable ureteral stent restrain encrustation both in vitro and in vivo

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