Comparison of some effects of modification of a polylactide surface layer by chemical, plasma, and laser methods

Moraczewski, Krzysztof; Rytlewski, Piotr; Malinowski, Rafał; Żenkiewicz, M.

doi:10.1016/j.apsusc.2015.03.202

Cited by 42 publications

(17 citation statements)

References 23 publications

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“…However, it should be noted that 60-s modification time was not sufficient to affect surface geometry. As was reported by Moraczewski et al, longer plasma treatment times (5-30 min) are required for cracks and cavities to occur [30]. On the other hand, the bright spots in the SEM images shown in Figure 4A-D indicate the inclusion of other element impurities in the entire polymer volume, both before and after treatment.…”

Section: Sem Analysissupporting

confidence: 64%

Discharge Plasma Treatment as an Efficient Tool for Improved Poly(lactide) Adhesive–Wood Interactions

et al. 2021

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Poly(lactide) (PLA) films obtained by thermoforming or solution-casting were modified by diffuse coplanar surface barrier discharge plasma (300 W and 60 s). PLA films were used as hot-melt adhesive in joints in oak wood. It was demonstrated that lap shear strength increased from 3.4 to 8.2 MPa, respectively, for the untreated and plasma-treated series. Pull-off tests performed on particleboard for the untreated and treated PLA films showed 100% cohesive failure. Pull-off strength tests on solid oak demonstrated adhesion enhancement from 3.3 MPa with the adhesion failure mode to 6.6 MPa with the cohesion failure mode for untreated and treated PLA. XPS revealed that carbonyl oxygen content increased by two-to-three-fold, which was confirmed in the Fourier-transform infrared spectroscopy experiments of the treated PLA. The water contact angle decreased from 66.4° for the pristine PLA to 49.8° after treatment. Subsequently, the surface free energy increased from 47.9 to 61.05 mJ/m2. Thus, it was clearly proven that discharge air plasma can be an efficient tool to change surface properties and to strengthen adhesive interactions between PLA and woody substrates.

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Section: Sem Analysissupporting

confidence: 64%

Discharge Plasma Treatment as an Efficient Tool for Improved Poly(lactide) Adhesive–Wood Interactions

et al. 2021

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“…Since we are interested with the surface modification of 3D printed PLA objects in this review, we excluded all the PLA bulk modification methods such as copolymerization, stereochemical manipulation, blending with plasticizers, other polymers, fillers and other composite materials from the review content. On the other hand, some good reviews were published on the surface modification of PLA polymers in the past [22,[57][58][59][60][61], however, these reviews are mostly on the general plasma treatments of many biopolymers or specific biomedical applications of PLA except the publication of Rasal et al which reports on the specific PLA bulk and surface modifications published till to 2010 [22]. Thus, there is a need to review the literature regarding PLA surface modifications after 2010 and also to select some suitable methods to be applied for the PLA objects which are printed by the FDM approach.…”

Section: Surface Modification Of Pla Solidsmentioning

confidence: 99%

Surface Modification of 3D Printed PLA Objects by Fused Deposition Modeling: A Review

Baran

Erbil

2019

Colloids and Interfaces

168

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Polylactic acid (PLA) filaments are very popular as a thermoplastic source used in the 3D printing field by the “Fused Deposition Modeling” method in the last decade. The PLA market is expected to reach 5.2 billion US dollars in 2020 for all of its industrial uses. On the other hand, 3D printing is an expanding technology that has a large economic potential in many industries where PLA is one of the main choices as the source polymer due to its ease of printing, environmentally friendly nature, glossiness and multicolor appearance properties. In this review, we first reported the chemical structure, production methods, general properties, and present market of the PLA. Then, the chemical modification possibilities of PLA and its use in 3D printers, present drawbacks, and the surface modification methods of PLA polymers in many different fields were discussed. Specifically, the 3D printing method where the PLA filaments are used in the extrusion-based 3D printing technologies is reviewed in this article. Many methods have been proposed for the permanent surface modifications of the PLA where covalent attachments were formed such as alkaline surface hydrolysis, atom transfer polymerization, photografting by UV light, plasma treatment, and chemical reactions after plasma treatment. Some of these methods can be applied for surface modifications of PLA objects obtained by 3D printing for better performance in biomedical uses and other fields. Some recent publications reporting the surface modification of 3D printed PLA objects were also discussed.

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“…Oxygen content of the surfaces increases with all three modes, with plasma processing giving the highest. Plasma modifications are deemed to be the most beneficial of the three processes for polymer implants [ 95 ]. Plasma modifications are known to be an effective method to treat the surface of polymers for biomedical applications as these treatments can be selective, yet not affect the bulk polymer characteristics [ 96 , 97 ].…”

Section: Surface Enhancementmentioning

confidence: 99%

Strategies for Enhancing Polyester-Based Materials for Bone Fixation Applications

et al. 2021

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Polyester-based materials are established options, regarding the manufacturing of bone fixation devices and devices in routine clinical use. This paper reviews the approaches researchers have taken to develop these materials to improve their mechanical and biological performances. Polymer blending, copolymerisation, and the use of particulates and fibre bioceramic materials to make composite materials and surface modifications have all been studied. Polymer blending, copolymerisation, and particulate composite approaches have been adopted commercially, with the primary focus on influencing the in vivo degradation rate. There are emerging opportunities in novel polymer blends and nanoscale particulate systems, to tune bulk properties, and, in terms of surface functionalisation, to optimise the initial interaction of devices with the implanted environment, offering the potential to improve the clinical performances of fracture fixation devices.

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Comparison of some effects of modification of a polylactide surface layer by chemical, plasma, and laser methods

Cited by 42 publications

References 23 publications

Discharge Plasma Treatment as an Efficient Tool for Improved Poly(lactide) Adhesive–Wood Interactions

Discharge Plasma Treatment as an Efficient Tool for Improved Poly(lactide) Adhesive–Wood Interactions

Surface Modification of 3D Printed PLA Objects by Fused Deposition Modeling: A Review

Strategies for Enhancing Polyester-Based Materials for Bone Fixation Applications

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