Surface modification of polylactic acid by ion, electron beams and low-temperature plasma: a review

Laput, O.A.; Васенина, И.В.; Ботвин, В. В.; Kurzina, Irina

doi:10.1007/s10853-021-06687-3

Cited by 15 publications

(9 citation statements)

References 148 publications

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“…Moreover, the content of carbon bonds in the -O-CH- (2) and O-C=O (3) coordinations decreased after plasma treatment. This phenomenon may be associated with the processes of decarbonylation and decarboylation in macromolecules [ 26 ]. The highest decrease in the content of carbon bonds in the O-C=O (3) coordination by a factor of 3.36 with respect to the initial state was observed during the nitrogen plasma treatment of the PLA surface for 28 min.…”

Section: Resultsmentioning

confidence: 99%

Effect of Nitrogen Arc Discharge Plasma Treatment on Physicochemical Properties and Biocompatibility of PLA-Based Scaffolds

Laput,

Vasenina,

Korzhova

et al. 2023

Polymers

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The effect of low-temperature arc discharge plasma treatment in a nitrogen atmosphere on the modification of the physicochemical properties of PLA-based scaffolds was studied. In addition, the cellular-mediated immune response when macrophages of three donors interact with the modified surfaces of PLA-based scaffolds was investigated. PLA surface carbonization, accompanied by a carbon atomic concentration increase, was revealed to occur because of plasma treatment. Nitrogen plasma significantly influenced the PLA wettability characteristics, namely, the hydrophilicity and lipophilicity were improved, as well as the surface energy being raised. The viability of cells in the presence of the plasma-modified PLA scaffolds was evaluated to be higher than that of the initial cells.

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Section: Resultsmentioning

confidence: 99%

Effect of Nitrogen Arc Discharge Plasma Treatment on Physicochemical Properties and Biocompatibility of PLA-Based Scaffolds

Laput,

Vasenina,

Korzhova

et al. 2023

Polymers

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“…Next, free radicals with carbon terminal atoms can recombine with formation of crosslink resulting in carbonization of the modified surface layer. 23 For nitrogen plasma treatment, atomic nitrogen appears on the surface of PLA scaffolds with an atomic concentration of 1.60 at %. Barrier discharge plasma treatment results in improvement of wettability characteristics.…”

Section: Discussionmentioning

confidence: 99%

“…First, the interaction of the PLA surface with charged particles of plasma leads to chain scission and free radical formation. Next, free radicals with carbon terminal atoms can recombine with formation of crosslink resulting in carbonization of the modified surface layer . For nitrogen plasma treatment, atomic nitrogen appears on the surface of PLA scaffolds with an atomic concentration of 1.60 at %.…”

Section: Discussionmentioning

confidence: 99%

Low-Temperature Barrier Discharge Plasma Modification of Scaffolds Based on Polylactic Acid

Laput

Васенина

Shapovalova

et al. 2022

ACS Appl. Mater. Interfaces

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We have explored the effect of low-temperature barrier discharge plasma treatment in oxygen, nitrogen, and argon on modification of the physicochemical properties of polylactic acid (PLA)-based scaffolds. The cellular-mediated immune response to the interaction of macrophages of three donors with the modified surface of PLA-based scaffolds was also investigated. Carbonization of the PLA surface accompanied by a carbon atomic concentration increase is shown to occur following plasma treatment. Argon plasma significantly affects the wettability characteristics of PLA; the hydrophilicity and lipophilicity are improved, and the surface energy is increased. The viability of cells in the presence of plasma-modified PLA scaffolds is lower than that for unmodified PLA but remains greater than that for the negative control. We find that PLA scaffolds do not cause increased expression of the proinflammatory (TNFα, IL-6, IL-1β) cytokines after 6 days of cell cultivation. At the same time, PLA scaffolds do not affect the increased production of anti-inflammatory cytokines (IL-10).

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“…Unfortunately, PLA matrix usually exhibits chemical inertness due to the lack of reactive side chains, which is still a challenging task for the surface and/or bulk modification of PLA. Currently, drastic chemical methods are commonly used and favored to realize the covalent modification on account of the efficiency and property endurance. − For instance, Petrůj et al investigated the functionality of PLA matrix with itaconic anhydride (IAH) via free-radical grafting reaction by 2,5-dimethyl-2,5-bis( tert -butylperoxy)hexane at 190 °C . The PLA- g -IAH copolymers were obtained successfully and showed great potential application in polymer “nanoblends” or polymer nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Engineered and Durable Antimicrobial Polymer via Controllable Immobilization of Ionic Liquids onto the Poly(lactic acid) Chains

Luo

et al. 2023

Biomacromolecules

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Nowadays, the development of effective modification methods for PLA has gained significant interest because of the wide application of antimicrobial PLA materials in the medical progress. Herein, the ionic liquid (IL) 1-vinyl-3-butylimidazolium bis(trifluoromethylsulfonyl)imide, has been grafted onto the PLA chains successfully in the PLA/IL blending films via electron beam (EB) radiation for the miscibility between PLA and IL. It was found that the existence of IL in the PLA matrix can significantly improve the chemical stability under EB radiation. The M n of PLA-g-IL copolymer did not change obviously but was just decreased from 6.80 × 104 g/mol to 5.20 × 104 g/mol after radiation with 10 kGy. The obtained PLA-g-IL copolymers showed excellent filament forming property during electrospinning process. The spindle structure on the nanofibers can be completely eliminated after feeding only 0.5 wt % ILs for the improvement of ionic conductivity. Specially, the prepared PLA-g-IL nonwovens exhibited outstanding and durable antimicrobial activity for the enrichment of immobilized ILs on the nanofiber surface. This work provides a feasible strategy to realize the modification of functional ILs onto PLA chains with low EB radiation doses, which may have huge potential application in the medical and packaging industry.

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Surface modification of polylactic acid by ion, electron beams and low-temperature plasma: a review

Cited by 15 publications

References 148 publications

Effect of Nitrogen Arc Discharge Plasma Treatment on Physicochemical Properties and Biocompatibility of PLA-Based Scaffolds

Effect of Nitrogen Arc Discharge Plasma Treatment on Physicochemical Properties and Biocompatibility of PLA-Based Scaffolds

Low-Temperature Barrier Discharge Plasma Modification of Scaffolds Based on Polylactic Acid

Engineered and Durable Antimicrobial Polymer via Controllable Immobilization of Ionic Liquids onto the Poly(lactic acid) Chains

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