Preparation, characterization, and permeability of novel poly (lactic acid)-based blends filled with thymol and ZnO

Kazemi‐Pasarvi, Sina; Ebrahimi, Nadereh Golshan; Raef, Mohammad

doi:10.1016/j.polymertesting.2020.106550

Cited by 12 publications

(2 citation statements)

References 45 publications

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“…All runs were done in the nitrogen atmosphere, and the weight of the samples was 10 mg. The crystallinity percentage (X c ) of the samples was calculated by the following equation 25

Xc (() %) = \frac{ΔHm - ΔHcc}{ΔHm . pla \times ((), 1 - Wf)} \times 100

where ΔHm (J/g) represents the melting point of the sample, ΔHcc (J/g) is the enthalpy of cold crystallization, ΔHm. pla (J/g) indicates the melting enthalpy for 100% crystalline PLA (93.7 J/g), and Wf is the weight fraction of nanoparticles in the nanocomposite.…”

Section: Methodsmentioning

confidence: 99%

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Tuning polylactic acid scaffolds for tissue engineering purposes by incorporating graphene oxide‐chitosan nano‐hybrids

Majidi

Babaei

Kazemi‐Pasarvi

et al. 2020

Polymers for Advanced Techs

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The main goal of this study was to take an effective approach to promote polylactic acid (PLA) bio‐applications. In this regard, graphene oxide (GO) and spherical structure of GO‐chitosan nano‐hybrids (GO‐CS) were successfully synthesized and characterized using transmission electron microscopy, atomic force microscopy, Fourier‐transform infrared, UV–Vis, and elemental analyses. Thereafter, PLA scaffolds containing 1 wt% and 2 wt% of synthesized nanomaterials were fabricated through the solvent casting/particulate leaching procedure. Then, the biodegradability, cell adhesion, and bio‐safety properties of the prepared scaffolds were investigated. The results of bio‐degradation analyses demonstrated that the used nanomaterials prevented PLA from rapid and excessive degradation. The cell viability and contact angle results revealed that the surface hydrophilicity of PLA scaffolds was noticeably enhanced using both GO and GO‐CS nanoparticles. Although scaffolds containing GO represented a more hydrophilic surface, their cell viability reduced as a consequence of GO cytotoxicity. It was also revealed that incorporation of GO‐CS nano‐hybrids into PLA scaffold tuned the cell viability through facilitating cell adhesion, growth, and proliferation processes.

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“…All runs were done in the nitrogen atmosphere, and the weight of the samples was 10 mg. The crystallinity percentage (X c ) of the samples was calculated by the following equation 25

Xc (() %) = \frac{ΔHm - ΔHcc}{ΔHm . pla \times ((), 1 - Wf)} \times 100

Section: Methodsmentioning

confidence: 99%

“…In the past decades, diverse techniques have been developed to promote the performance of polymers 19‐24 . Literature survey reveals that incorporating nanoparticles into polymers is one of the most effective methods to address these concerns 13,22,25‐27 …”

Section: Introductionmentioning

confidence: 99%