Super-Tough and Biodegradable Poly(lactide-co-glycolide) (PLGA) Transparent Thin Films Toughened by Star-Shaped PCL-b-PDLA Plasticizers

Jeong, Jaeseok; Yoon, Seok Soo; Yang, Xin; Kim, Young Jun

doi:10.3390/polym15122617

Cited by 2 publications

(2 citation statements)

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“…This indicates that the EOP-TV spray coating exhibited that film-like appearance only on the very surface of the coating and deeper layers were still present as distinct but agglomerated PLGA NPs, as pointed out above. The fact that after the release experiment, the PLGA NPs in both cases EOP-TC and EOP-TV, respectively, were still detected, confirms a certain stability of the prepared PLGA NPs even after full immersion in water for a period of 19 days, even though PLGA generally has a short degradation period [91]. Extended stability of PLGA was reported by Moroishi et al [99], who prepared thin and flexible sheets by spin-coating PLA/PLGA blends for the controlled release of hydrophilic compounds and performed release experiments in PBS buffer for as long as 100 days.…”

Section: Release Experiments Of Essential Oils From the Spray Coatingsmentioning

confidence: 65%

“…By employing fluorescent markers incorporated into PLGA NPs, the uptake of PLGA NPs into Arabidopsis thaliana cells as well as plantlet roots was shown using fluorescent microscopy [90]. PLGA was also employed in coating applications like thin films with added plasticizers [91], and films blended with other biobased polymers such as PLA [92] or lignin [93], but literature reports about the use of PLGA NPs alone for the preparation of coatings were not found.…”

Section: Introductionmentioning

confidence: 99%

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Spray Coating of Wood with Nanoparticles from Lignin and Polylactic Glycolic Acid Loaded with Thyme Essential Oils

Zikeli,

Jusic,

Palocci

et al. 2024

Polymers

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Ensuring the longevity of wooden constructions depends heavily on the preservation process. However, several traditional preservation methods involving fossil-based compounds have become outdated because they pose a significant risk to the environment and to human health. Therefore, the use of bio-based and bioactive solutions, such as essential oils, has emerged as a more sustainable alternative in protecting wood from biotic attacks. The entrapment of essential oils in polymeric carrier matrices provides protection against oxidation and subsequent degradation or rapid evaporation, which implies the loss of their biocidal effect. In this work, lignin as well as PLGA nanoparticles containing the essential oils from two different thyme species (Thymus capitatus and T. vulgaris) were applied on beech wood samples using spray coating. The prepared coatings were investigated using FTIR imaging, SEM, as well as LSM analysis. Release experiments were conducted to investigate the release behavior of the essential oils from their respective lignin and PLGA carrier materials. The study found that lignin nanoparticles were more effective at trapping and retaining essential oils than PLGA nanoparticles, despite having larger average particle diameters and a more uneven particle size distribution. An analysis of the lignin coatings showed that they formed a uniform layer that covered most of the surface pores. PLGA nanoparticles formed a film-like layer on the cell walls, and after leaching, larger areas of native wood were evident on the wood samples treated with PLGA NPs compared to the ones coated with lignin NPs. The loading capacity and efficiency varied with the type of essential oil, while the release behaviors were similar between the two essential oil types applied in this study.

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Section: Release Experiments Of Essential Oils From the Spray Coatingsmentioning

confidence: 65%