Enhanced thermal stability, toughness, and electrical conductivity of carbon nanotube-reinforced biodegradable poly(lactic acid)/poly(ethylene oxide) blend-based nanocomposites

Behera, Kartik; Chang, Yen‐Hsiang; Yadav, Mithilesh; Chiu, Fang‐Chyou

doi:10.1016/j.polymer.2019.122002

Cited by 36 publications

(19 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of the polymers that will in all probability become an alternative to the currently used polymers of petrochemical origin is polylactide (PLA) [ 7 , 8 ]. It has to be stressed that polylactide is an aliphatic biodegradable polyester that can be obtained from renewable raw materials of plant origin [ 9 ]. The most popular materials used in an aim to manufacture lactic acid include corn, rice, barley, wheat or cassava [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Antibacterial Films Based on Polylactide with the Addition of Quercetin and Poly(Ethylene Glycol)

et al. 2021

View full text Add to dashboard Cite

A series of new films with antibacterial properties has been obtained by means of solvent casting method. Biodegradable materials including polylactide (PLA), quercetin (Q) acting as an antibacterial compound and polyethylene glycol (PEG) acting as a plasticizer have been used in the process. The effect of quercetin as well as the amount of PEG on the structural, thermal, mechanical and antibacterial properties of the obtained materials has been determined. It was found that an addition of quercetin significantly influences thermal stability. It should be stressed that samples containing the studied flavonoid are characterized by a higher Young modulus and elongation at break than materials consisting only of PLA and PEG. Moreover, the introduction of 1% of quercetin grants antibacterial properties to the new materials. Recorded results showed that the amount of plasticizer did not influence the antibacterial properties; it does, however, cause changes in physicochemical properties of the obtained materials. These results prove that quercetin could be used as an antibacterial compound and simultaneously improve mechanical and thermal properties of polylactide-based films.

show abstract

Section: Introductionmentioning

confidence: 99%

Antibacterial Films Based on Polylactide with the Addition of Quercetin and Poly(Ethylene Glycol)

et al. 2021

View full text Add to dashboard Cite

show abstract

“…In order to overcome above‐mentioned limitations, we introduce a novel 3D printable nanocomposite starch hydrogel with highly enhanced biocompatibility for promoting 3D cell growth, by formulation with natural collagen and gelatin nanoparticles. Although a wide series of nanoparticles, including nanosilicates, [ 26,27 ] starch or cellulose nanocrystals, [ 12,28 ] gold nanoparticles, [ 29 ] carbon nanotube, and graphene oxide have been investigated and incorporated into hydrogel networks to achieve desired material properties (e.g., electrical conductivity, printability, mechanical stiffness, and stimuli response), [ 30,31 ] using gelatin nanoparticles in starch hydrogel for enhancing 3D cell culture and tissue scaffolding ability has not been explored elsewhere. With the incorporation of gelatin nanoparticles and collagen in starch‐based hydrogel to bring nanoscale topological features, cells could reside in a highly biocompatible microenvironment for interactive binding and attachment, which is critically needed in regulating 3D cellular response and tissue growth.…”

Section: Introductionmentioning

confidence: 99%

Biologically Enhanced Starch Bio‐Ink for Promoting 3D Cell Growth

Zhuang

Greenberg

2021

Adv Materials Technologies

View full text Add to dashboard Cite

The excellent rheological property has legitimated the suitability of starch hydrogel for extrusion‐based 3D printing. However, the inability to promote cell attachment and migration has precluded the non‐modified starch hydrogel from direct applications in the biomedical field. Herein, a novel 3D printable nanocomposite starch hydrogel is developed with highly enhanced biocompatibility for promoting 3D cell growth, by formulating with gelatin nanoparticles and collagen. The rheological evaluation reveals the shear‐thinning and thixotropic properties of the starch‐based hydrogel, as well as the combinatorial effect of collagen and gelatin nanoparticles on maintaining printability and 3D shape fidelity. The homogeneous microporous structure with abundant collagen fibers and gelatin nanoparticles interlace and supplies rich attachment sites for cell growth. Corroborated by the cell metabolic activity study, the multiplied proliferation rate of cells on the 3D printed nanocomposite starch hydrogel scaffold confirms the remarkable enhancement of biological function of the developed starch hydrogel. Hence, the developed nanocomposite starch hydrogel serves as a highly desirable bio‐ink for advancing 3D tissue engineering.

show abstract

“…[6] Therefore, a substantial amount of works has been conducted by this method in order to study the physico-mechanical properties of CNT-PCs. [7][8][9][10][11][12][13][14] Poly(methyl methacrylate) (PMMA) is a well-known amorphous polymer with high modulus and strength, excellent dimensional stability, outstanding optical clarity, good weathering resistance, and biocompatibility but low ductility. [15] Ethylene-co-vinyl acetate (EVA) is a random structured material with excellent ozone and weather resistance and also high ductility even at low temperature.…”

Section: Introductionmentioning

confidence: 99%

Rheological behavior, electrical conductivity, and morphology of multi‐walled carbon nanotube filled poly(ethylene‐co‐vinyl acetate)/poly(methyl methacrylate) nanocomposites: Effect of nanofiller content

2021

View full text Add to dashboard Cite

Nanocomposites derived from poly(methyl methacrylate) (PMMA) and poly(ethylene-co-vinyl acetate) (EVA) with 30 wt% EVA and 0-10 wt% multiwalled carbon nanotube (MWCNT) content were prepared. Scanning electron microscope images showed a two-phase morphology for the unfilled blend in which the EVA droplets were dispersed within the PMMA domain. However, the size of EVA droplets was considerably smaller in the nanocomposites than that of the unfilled blend. The tensile results revealed that the maximum elastic modulus, tensile strength, yield stress, and strain at break were achieved for the nanocomposite containing 5 wt% MWCNT. The electrical conductivity sharply increased for the nanocomposite containing 2.5 wt% MWCNT, in comparison with that of the unfilled blend, beyond which the conductivity was less dependent on the MWCNT content. The rheological characterization showed that the normalized relaxation time increased up to 5 wt% nanofiller and remained reasonably constant for higher amounts of MWCNT.

show abstract

Enhanced thermal stability, toughness, and electrical conductivity of carbon nanotube-reinforced biodegradable poly(lactic acid)/poly(ethylene oxide) blend-based nanocomposites

Cited by 36 publications

References 44 publications

Antibacterial Films Based on Polylactide with the Addition of Quercetin and Poly(Ethylene Glycol)

Antibacterial Films Based on Polylactide with the Addition of Quercetin and Poly(Ethylene Glycol)

Biologically Enhanced Starch Bio‐Ink for Promoting 3D Cell Growth

Rheological behavior, electrical conductivity, and morphology of multi‐walled carbon nanotube filled poly(ethylene‐co‐vinyl acetate)/poly(methyl methacrylate) nanocomposites: Effect of nanofiller content

Contact Info

Product

Resources

About