The influence of side groups and polarity of polymers on the kind and effectiveness of their surface modification by air plasma action

Kamińska, A.; Kaczmarek, Halina; Kowalonek, Jolanta

doi:10.1016/s0014-3057(02)00059-9

Cited by 136 publications

(92 citation statements)

References 16 publications

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“…The plasma treatment creates a complex mixture of surface functionalities which influence physical and chemical properties of polymers, and results in a dramatic change in the wetting behaviour of the surface; this is true for both solid and liquid surfaces [7][8][9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Physical mechanisms of interaction of cold plasma with polymer surfaces

Bormashenko

Whyman

Multanen

et al. 2015

Journal of Colloid and Interface Science

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Physical mechanisms of the interaction of cold plasmas with organic surfaces are discussed. Trapping of plasma ions by the CH 2 groups of polymer surfaces resulting in their electrical charging is treated. Polyethylene surfaces were exposed to the cold radiofrequency air plasma for different intervals of time. The change in the wettability of these surfaces was registered. The experimentally established characteristic time scales of the interaction of cold plasma with polymer surfaces are inversely proportional to the concentration of ions. The phenomenological kinetic model of the electrical charging of polymer surfaces by plasmas is introduced and analyzed.

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Section: Introductionmentioning

confidence: 99%

Physical mechanisms of interaction of cold plasma with polymer surfaces

Bormashenko

Whyman

Multanen

et al. 2015

Journal of Colloid and Interface Science

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“…Moreover, cell adhesion is closely related to surface properties of biomaterials. It is generally accepted that adhesion of cells onto solid substrate is influenced by several substratum surface properties, such as wettability 4 , surface charge 5 , roughness and topography 6 . Hence, surface modification techniques have been used to improve surface properties of polymers 7 .…”

Section: Introductionmentioning

confidence: 99%

Benefits of oxygen and nitrogen plasma treatment in Vero cell affinity to poly(lactide-co-glycolide acid)

et al. 2013

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Cell adhesion on materials surface is critical because this phenomenon occurs before other events, as cell spreading, cell migration and cell differentiation. It is commonly accepted that the adhesion of cells on solid substrate is influenced by several substratum surface properties, such as wettability, surface charge, roughness and topography. Plasma technique is a convenient method for modifying surface properties of materials without affecting physical properties. In this study, poly(lactide-co-glycolide), PLGA, membranes were modified by oxygen and nitrogen plasma to improve polymer hydrophilicity and verify their effect on Vero cells culture. The PLGA membranes, which were characterized by SEM and contact angle, showed increased surface rugosity and narrower contact angles. Cell adhesion, cytotoxicity assay, SEM and cytochemistry analysis showed that plasma treatment was beneficial to cell growth by improving cell-polymer interaction.

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“…A degradação de polímeros é de considerável importância em engenharia médica e tecnologia farmacêutica, pois nos implantes dos biomateriais nos tecidos do corpo, é esperado que eles permaneçam por um considerável período de tempo [12].…”

Section: Introductionunclassified

Análise histológica da Blenda PLLA/PCL como prótese de menisco

et al. 2009

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RESUMOOs inúmeros artigos científicos aplicando polímeros biorreabsorvíveis como biomaterial, desde 1966, mostram o crescente interesse dos pesquisadores em várias partes do mundo devido a sua ampla gama de aplicações na área médica, tais como regeneração guiada de tecidos, liberação controlada de drogas, suporte para cultura de células, implantes ortopédicos, entre outros. Com o intuito de analisar histologicamente a blenda PLLA/PCL poli(ácido-lático/poli(-caprolactona) na composição 70/30 com 3% de plastificante para aplicação como prótese de menisco, foi realizado um estudo in vivo em coelhos, os quais foram submetidos à remoção total do menisco medial do joelho, sendo que em um dos joelhos foi implantada a prótese da blenda e o outro, sem implante, serviu como controle. Após 8, 16 e 24 semanas, foram recolhidos deles, a prótese juntamente com o tecido ao seu redor, o côndilo femural da prótese e o côndilo femural controle. Os materiais foram submetidos à análise histológica por microscopia óptica. Os resultados mostraram que após 24 semanas, ocorreu a formação de um tecido do tipo fibrocartilagem, indicando que a blenda estudada apresenta grande potencial para ser utilizada para aplicação em questão, já que o material favorece a formação de um tecido muito semelhante ao do menisco.Palavras-chave: PLLA, PCL, menisco e prótese. Histological analysis of PLLA/PCL as a meniscal prothesis ABSTRACTThe numerous scientific papers applying bioreabsorbable polymers as biomaterial, since 1966, shows the growing interest of researchers in various parts of the world due to its wide range of applications in medicine, such as guided tissue regeneration, controlled release of drugs, support for cells culture, orthopaedic implants, among others. In order to analyze the histologically PLLA / PCL poly (lactic-acid / poly ( caprolactone) blends composition 70/30 with 3% of plasticizer for application as a meniscal prothesis, a study was performed in vivo in rabbits, which were subjected to total removal of the medial meniscus of the knee, and in one of the knees was implanted in the prosthesis and blend another without implant, served as control. after 8, 16 and 24 weeks, were collected them, along with a prosthesis the tissue around it, the femoral condyle of the prosthesis and the femoral condyle control. The materials were subjected to histological analysis by optical microscopy. The results showed that after 24 weeks, there was the formation of a tissue-type fibrocartilage, indicating that the blend studied presents great potential to be used for application in question, since the material promotes the tissue formation o very similar to the meniscus.

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The influence of side groups and polarity of polymers on the kind and effectiveness of their surface modification by air plasma action

Cited by 136 publications

References 16 publications

Physical mechanisms of interaction of cold plasma with polymer surfaces

Physical mechanisms of interaction of cold plasma with polymer surfaces

Benefits of oxygen and nitrogen plasma treatment in Vero cell affinity to poly(lactide-co-glycolide acid)

Análise histológica da Blenda PLLA/PCL como prótese de menisco

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