Improvement of mechanical properties of polylactic acid adhesion joints with bio‐based adhesives by using air atmospheric plasma treatment

Jordá‐Vilaplana, Amparo; Sànchez-Nácher, Lourdes; Fombuena, Vicent; Garcia‐Garcia, Daniel; Carbonell‐Verdu, Alfredo

doi:10.1002/app.42391

Cited by 10 publications

(12 citation statements)

References 39 publications

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“…The air APPJ treatment caused a significant reduction of carbon concentration [20,30,112] and a slight increase of nitrogen for the last two samples, but also a slight decrease of nitrogen for the first three samples. However, O1s intensity had a remarkable increase [20,30,112,113] after treatment due to the air in the plasma [22], the reaction of free radicals and the unstable species interaction with oxygen from the active species resides in the plasma. XPS results show sample 4 had a highest oxygen content (hydrophilic behavior [7]) after treatment.…”

Section: Atomic Force Microscopy (Afm)mentioning

confidence: 91%

“…Plasma treatment modifies the surface morphology via the creation of free radicals and ions, specific to the gas conditions used, which further reacts with the composite surface [13,14]. Plasma treatment modifying composite surface properties for specific applications has been extensively studied [8,12,[15][16][17][18][19][20][21]; in most instances, an increase in surface energy of the substrate is reported, preferentially denoted by a decrease in WCA, which enhances wettability characteristics without changing its bulk properties [7,10,[22][23][24].…”

Section: Plasma Treatmentmentioning

confidence: 99%

“…Surface treatment with a 'dielectric barrier discharge' (DBD) has been studied on various polymer films [25,26]; subsequent surface chemical characterization through Xray photoelectron spectroscopy (XPS) revealed that DBD treatment has resulted in an increase in oxygen content in the polymers. Furthermore, the WCA has also been reported to decrease significantly, indicating an increase in the wettability and thus surface energy [8,20,[25][26][27][28]. Scanning electron microscopy (SEM) did not reveal any significant physical damage after the treatment period [25,26,29,30].…”

Section: Plasma Treatmentmentioning

confidence: 99%

“…Additionally, plasma treatment does not damage the treated surface, yet still gives a high-quality surface finish for the adhesive application when compared to traditional methods. These applications are easily automated and simple to set up for manufacturing purposes [20] with controllable process parameters such as distance from the plasma jet to the surface of the material, and the rate at which the material is passed over and treated. These parameters which are shown in Table 2.1 influence the wettability, roughness, and adhesion properties of the substrate [32].…”

Section: Plasma Surface Treatmentmentioning

confidence: 99%

“…When the treatment speed increased at distance D1, we observed that the contact angle also increased. The decrease in the contact angle demonstrates an enhancing surface roughness [11], the formation of polar groups [11,20] on the surface through the increase of hydrophilicity when the treatment time was raised with a constant distance [22]. Li et al [22], states that maximizing polar surface with a longer treatment time causes the increase of surface wettability [11].…”

Section: Water Contact Angle (Wca)mentioning

confidence: 99%

See 4 more Smart Citations

Plasma Surface Functionalization of AFP Manufactured Composites for Improved Adhesive Bond Performance

Sarikaya

Tahiyat²,

Harik³

et al. 2019

SAMPE 2019 - Charlotte, NC

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I would like to express my deepest appreciation for his aspiring guidance, invaluable friendly contribution during the research to my advisor, Dr. Ramy Harik, who supported me throughout my master degree. Also, I would like to thank my committee member, Dr. Tanvir Farouk, for his constructive suggestions and comments for the research. Furthermore, I would like to thank USC 2C26 student team at McNair Center

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Section: Atomic Force Microscopy (Afm)mentioning

confidence: 91%

Section: Plasma Treatmentmentioning

confidence: 99%

Section: Plasma Treatmentmentioning

confidence: 99%

Section: Plasma Surface Treatmentmentioning

confidence: 99%

Section: Water Contact Angle (Wca)mentioning

confidence: 99%

See 3 more Smart Citations

Plasma Surface Functionalization of AFP Manufactured Composites for Improved Adhesive Bond Performance

Sarikaya

Tahiyat²,

Harik³

et al. 2019

SAMPE 2019 - Charlotte, NC

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Natural Dual‐Crosslinked Self‐Healing Hydrogels for In Situ Wound Healing

Wang

Xiong

Lin

et al. 2022

Macro Materials & Eng

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Poly(l‐glutamic acid) (PLGA), a polypeptide prepared by bacteria fermentation, has broad applications in tissue engineering. A natural host–guest pair of β‐cyclodextrin (β‐CD) and bile acid molecules are attached covalently onto the PLGA backbones separately, and host–guest crosslinked self‐healing hydrogels can be easily formed by mixing these polymer solutions. Inspired by the adhesives of mussel foot proteins, a dopamine methyl acrylamide derivative is introduced into this system to prepare a PLGA‐based dual‐network hydrogel in situ through the combination of host–guest crosslinking and the photo‐crosslinking of the dopamine derivative. The mechanical properties of the hydrogels can be tuned by altering the molar ratios of β‐CD and bile acid as well as the content of dopamine methyl acrylamide derivative. The dynamic inclusion complexation of β‐CD and bile acid allows the hydrogel to self‐heal rapidly under ambient atmosphere and their mechanical properties can recover to original levels within 1 min as evidenced in rheological results. The dual‐network hydrogels exhibit stronger adhesion behavior to pig skin than the host–guest crosslinked hydrogels in vitro. The adhesion of the dual‐network hydrogels to rat whole cortical incision has promoted faster wound healing and tissue regeneration than that in sutured treatments in vivo.

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The effect of ageing on bonding performance of plasma treated beech wood with urea-formaldehyde adhesive

et al. 2021

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In the process of wood bonding, the usage of aged and inactivated wooden elements can cause a reduction in mechanical properties of products containing wood-adhesive joints. Treating wood with an atmospheric air plasma represents a sophisticated technique for surface activation. With this regard, to enhance the bondability of normal beech wood (Fagus sylvatica L.) with urea-formaldehyde (UF) adhesive, a dielectric barrier discharge plasma in floating electrode configuration was implemented. In this study, fresh and aged wood specimen both, untreated and plasma treated, were investigated. X-ray photoelectron spectroscopy revealed promotion of carbon-rich species with ageing, but generation of a new functional oxygen-containing functional groups after plasma treatment. Microscopic observations with scanning electron microscope showed no obvious changes in the wood structure after plasma treatment. Surface oxidation consequently improved the wettability of the wood surface with water and UF adhesive. However, this enhanced wettability slightly diminished over time. As shown with dynamic mechanical analysis, the rheological properties of the UF adhesive in wood-adhesive joints were not affected by aging nor by plasma treatment. The positive influence of plasma treatment and negative impact of substrate ageing to the shear strengths of wood lap-joints were determined using an automated bonding evaluation system. Similarly, the negative effect of wood ageing and the positive effect of plasma pre-treatment were reflected in the bending strengths of the produced laminated veneer lumbers. Results showed that plasma treatment of beech wood improves the bonding performance of both fresh and aged wood. Graphic abstract

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Improvement of mechanical properties of polylactic acid adhesion joints with bio‐based adhesives by using air atmospheric plasma treatment

Cited by 10 publications

References 39 publications

Plasma Surface Functionalization of AFP Manufactured Composites for Improved Adhesive Bond Performance

Plasma Surface Functionalization of AFP Manufactured Composites for Improved Adhesive Bond Performance

Natural Dual‐Crosslinked Self‐Healing Hydrogels for In Situ Wound Healing

The effect of ageing on bonding performance of plasma treated beech wood with urea-formaldehyde adhesive

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