Properties and degradation behavior of surface functionalized MWCNT/poly(<scp>L</scp>‐lactide‐co‐ε‐caprolactone) biodegradable nanocomposites

Amirian, Maryam; Sui, Jiehe; Chakoli, Ali Nabipour; Cai, Wei

doi:10.1002/app.34317

Cited by 9 publications

(3 citation statements)

References 35 publications

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“…As an example, PLACL reinforced with well-dispersed multi-walled carbon nanotubes (MWCNTs) were prepared using functionalized MWCNT by in situ polymerization. The surface functionalization of MWCNTs can effectively improve the Poly(L-Lactide) Bionanocomposites DOI: http://dx.doi.org /10.5772/intechopen.85035 dispersion and adhesion of MWCNTs in PLACL and hence, it will have a significant effect on the physical, thermomechanical, and degradation properties of MWCNT/ PLACL nanocomposites [29].…”

Section: Poly(l-lactide-co-ε-caprolactone)mentioning

confidence: 99%

Poly(L-Lactide) Bionanocomposites

Chakoli¹

2019

Peptide Synthesis

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A variety of natural, synthetic, and biosynthetic polymers such as poly(L-lactide), polyhydroxyalkanoate, and poly(ε-caprolactone) are biocompatible and environmentally degradable. Biodegradability can therefore be engineered into polymers by the judicious addition of chemical linkages such as anhydride, ester, or amide bonds, among others. Poly(L-lactide) (PLLA) has attracted increasing attention due to the combination of its bioresorbability, biodegradability, biocompatibility, and shape memory effect. It has been widely applied to biomedical fields such as bone screws, surgical sutures, tissue engineering, and controlled drug delivery. Nevertheless, the PLLA is weaker than that of natural cortical bones in mechanical strength. Additionally, the ability of PLLA in cell attachment and bioactivity are weak due to its hydrophobic properties. In order to overcome the unsuitable properties of PLLA, various techniques have already been applied to modify the physical and mechanical properties of PLLA. The most significant method is to introduce some various kinds of fillers into PLLA matrix to provide reinforcing filler/PLLA composites, such as hydroxyapatite (HA), b-tricalcium phosphate, bioglass, silica gel, amorphous carbon, carbon nanotubes (CNTs), and so on.

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Section: Poly(l-lactide-co-ε-caprolactone)mentioning

confidence: 99%

Poly(L-Lactide) Bionanocomposites

Chakoli¹

2019

Peptide Synthesis

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“…As an example PLACLs reinforced with well-dispersed multiwalled carbon nanotubes (MWCNTs) were prepared using functionalized MWCNT by in situ polymerization. The surface functionalization of MWCNTs can effectively improve the dispersion and adhesion of MWCNTs in PLACL, and, hence, it will have a significant effect on the physical, thermomechanical, and degradation properties of MWCNT/PLACL nanocomposites (Amirian et al 2011).…”

Section: Poly (L-lactide-co-e-caprolactone)mentioning

confidence: 99%

Composites Based on Shape Memory Materials

Chakoli¹

2019

Handbook of Polymer and Ceramic Nanotechnology

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Shape memory properties provide a very attractive insight into materials science, opening unexplored horizons and giving access to unconventional functions in every material class (metals, polymers, and ceramics). Since the discovery of shape memory materials (SMMs), there has been a continuous quest for ways to application of SMMs with the extraordinary properties. Two groups of materials have shown the shape memory effect: shape memory metal alloys (SMAs) and shape memory polymers (SMPs). The intermetallic alloys such as NiTi can be extremely compliant while retaining the strength of metals and can convert thermal energy to mechanical work. The unique properties of SMAs result from a reversible solid-to-solid phase transformation. Among the commercially available SMAs, NiTi alloys in the form of wires, ribbons, or particles are the most widely used because of their excellent mechanical properties and shape memory performance. Also, SMPs can rapidly change their shapes from a temporary shape to their original (or permanent) shapes under appropriate stimulus such as temperature, light, electric field, magnetic field, pH, specific ions, or enzyme. Thermally active SMP belongs to a kind of functional material that can hold a temporary deformation at a temperature below the switching temperature and recover the original shape when it is heated to a temperature above the switching temperature. The integration of SMMs into composite structures has resulted in many benefits, which include actuation, vibration control, damping, sensing, and selfhealing. The SMMs composite complexity that includes strong thermomechanical coupling, large inelastic deformations, and variable thermoelastic properties will have many applications in industry. Nonetheless, as SMMs are becoming increasingly accepted in engineering applications, a similar trend for SMM composites is expected in aerospace, automotive, and energy conversion and storage-related applications. Reinforcement of SMMs with particles and nanoparticles such as carbon nanotubes is new insight to find new extraordinary properties for SMAs.

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“…Poly( l -lactide- co -ε-caprolactone)/fabric composites by any other composite process have not been reported previously. To date, only nanocomposites involving this copolymer matrix were reported. − …”

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Poly(l-lactide-co-ε-caprolactone) Matrix Composites Produced in One Step by In Situ Polymerization in TP-RTM

Campos

Fontaine

Bourbigot

et al. 2022

ACS Appl. Polym. Mater.

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Poly(L-Lactide) (PLLA) is a semi-crystalline biopolymer of great interest due to its biosourced, biocompatible and compostable nature. However, its brittleness prevents its use in a wide range of applications. In order to reinforce PLLA, it is often used in polymer blends or in composites. In this contribution, an unprecedented family of PLLA-based / glass fabrics composites with poly(L-lactide-co--caprolactone) statistical copolymers as the matrix is reported. These biocomposites were produced in one step synthesis by in situ copolymerization of L-lactide and -caprolactone in Thermoplastic Resin Transfer Molding (TP-RTM) process. These materials display high matrix/fabrics wettability along with strong rubbery character.

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Properties and degradation behavior of surface functionalized MWCNT/poly(L‐lactide‐co‐ε‐caprolactone) biodegradable nanocomposites

Cited by 9 publications

References 35 publications

Poly(L-Lactide) Bionanocomposites

Poly(L-Lactide) Bionanocomposites

Composites Based on Shape Memory Materials

Poly(l-lactide-co-ε-caprolactone) Matrix Composites Produced in One Step by In Situ Polymerization in TP-RTM

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