Effect of Low-Temperature Plasma Treatment and γ Irradiation on the Surface Properties of Thin Films Based on Polylactic Acid

Иванова, Н. М.; Filippova, E. O.; Aleinik, A. N.; Пичугин, В. Ф.

doi:10.1134/s207511332103014x

Cited by 4 publications

(4 citation statements)

References 24 publications

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“…In this context, Luminy ® L130 showed the comparatively highest reduction in the water contact angle. The literature also documents minor to negligible changes in the water contact angle as a result of Ga sterilization [ 17 , 37 ].…”

Section: Resultsmentioning

confidence: 99%

Influence of Ethylene Oxide and Gamma Irradiation Sterilization Processes on the Properties of Poly-L-Lactic-Acid (PLLA) Materials

Krug,

Zarges,

Heim

2023

Polymers

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In order to encourage the substitution of petrochemical polymers in medical technology with sustainable, bio-based materials, there is an urgent need for further investigations, especially data regarding their sterility performance. Within the scope of the investigations, selected material properties of poly-L-lactic-acid (PLLA), a specific type of poly(lactic-acid) (PLA), were analyzed before and after sterilization (using ethylene oxide or gamma irradiation) in order to investigate deviations in its chemical structure, wettability, optical, and mechanical properties. In particular, parameters such as molecular weight, complex viscosity, tensile strength, water contact angle, and color were discussed. Sterilization temperatures close to the glass transition of PLA, high humidity, and interactions with the ethylene oxide molecules have resulted in an increase in crystallinity, a decrease in elongation at break, and in some cases, a variation in wettability. As a consequence of exposure to high-energy radiation, the material’s toughness is reduced due to chain scission, which is manifested through a decrease in molecular weight, an increase in crystallinity, and a partial change in surface energy. For the selected PLLA-materials (Luminy® L130, NP HT 202, and NP HT 203), ethylene oxide sterilization resulted in a comparatively minor variation in the characteristics behavior, and was chosen as the preferred method.

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Section: Resultsmentioning

confidence: 99%

Influence of Ethylene Oxide and Gamma Irradiation Sterilization Processes on the Properties of Poly-L-Lactic-Acid (PLLA) Materials

Krug,

Zarges,

Heim

2023

Polymers

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“…In addition to blending, chemical grafting and copolymerization, 17−19,22−24 low-temperature plasma, ultraviolet radiation, ultrasound, and other methods have also been proven to effectively improve the dyeing performances of PLA filaments. 25,26 Although these approaches have been widely investigated, they are still associated with several limitations, such as high costs, complicated procedures, and the lack of stability of the functional moieties on the surfaces of the materials. Moreover, the low-temperature dyeing of PLA fiber is still a tough challenge.…”

Section: ■ Introductionmentioning

confidence: 99%

“…A high-temperature application is capable of facilitating the intercalation of the hydrophobic polyester moiety of PPBC into the inner surface layer of the PLA fiber and accordingly improving the laundry resistance and hydrophilicity of the PLA fiber, realizing the integrated dyeing, hydrophilization, and UV protection finishing in a one-step process. In addition to blending, chemical grafting and copolymerization, − ,− low-temperature plasma, ultraviolet radiation, ultrasound, and other methods have also been proven to effectively improve the dyeing performances of PLA filaments. , Although these approaches have been widely investigated, they are still associated with several limitations, such as high costs, complicated procedures, and the lack of stability of the functional moieties on the surfaces of the materials. Moreover, the low-temperature dyeing of PLA fiber is still a tough challenge.…”

Section: Introductionmentioning

confidence: 99%

Surface Reconstruction and Low-Temperature Dyeing Performances of a Poly(Lactic Acid) Filament Pretreated with a Choline Chloride and Oxalic Acid Deep Eutectic Solvent

Ying

Zhao

et al. 2022

Macromolecules

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Poly(lactic acid) (PLA) is considered the best candidate biobased material alternative to petroleum-based polyethylene terephthalate due to its renewability and biodegradability. However, the crucial dyeing issue of PLA filament limits its applications in the textile industry. Herein, a green deep eutectic solvent (DES) consisting of choline chloride and oxalic acid was employed for the surface reconstruction of the PLA filament. Owing to the synergistic contribution effect of physical etching and chemical modification from the DES, the surface roughness and chemical activity of the PLA filament improved significantly, thereby conferring potent low-temperature dyeing performances. The DESmodified PLA filament can achieve K/S value and dye uptake at 90 °C commensurate to those of the PLA filament at 110 °C with no decay on the dry and wet rubbing fastness. This work demonstrates a promising approach for the low-temperature dyeing of PLA filaments, enabling the practical applications of PLA filaments.

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“…Poly(vinyldiphenylphosphine) can serve for the synthesis of various olefins [9]. In the field of biomedical research, the application of specific polymers such as polylactic acid [10], polyaniline, and polypyrrole [11] was revived. Poly-2-oxazolines are also among such polymers.…”

Section: Introductionmentioning

confidence: 99%

Determination of the Degree of Crystallinity of Poly(2-methyl-2-oxazoline)

et al. 2021

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A new method for purification of 2-methyl-2-oxazoline using citric acid was developed and living cationic ring-opening polymerization of 2-methyl-2-oxazoline was carried out. Polymerization was conducted in acetonitrile using benzyl chloride—boron trifluoride etherate initiating system. According to DSC data, the temperature range of melting of the crystalline phase of the resulting polymer was 95–180 °C. According to small-angle X-ray scattering and wide-angle X-ray diffraction data, the degree of crystallinity of the polymer was 12%. Upon cooling of the polymer melt, the polymer became amorphous. Using thermogravimetric analysis, it was found that the thermal destruction of poly(2-methyl-2-oxazoline) started above 209 °C.

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Effect of Low-Temperature Plasma Treatment and γ Irradiation on the Surface Properties of Thin Films Based on Polylactic Acid

Cited by 4 publications

References 24 publications

Influence of Ethylene Oxide and Gamma Irradiation Sterilization Processes on the Properties of Poly-L-Lactic-Acid (PLLA) Materials

Influence of Ethylene Oxide and Gamma Irradiation Sterilization Processes on the Properties of Poly-L-Lactic-Acid (PLLA) Materials

Surface Reconstruction and Low-Temperature Dyeing Performances of a Poly(Lactic Acid) Filament Pretreated with a Choline Chloride and Oxalic Acid Deep Eutectic Solvent

Determination of the Degree of Crystallinity of Poly(2-methyl-2-oxazoline)

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