Surface modification of cycloolefinic copolymers for optimization of the adhesion to metals

Nikolova, D.; Dayss, E.; Leps, G.; Wutzler, A.

doi:10.1002/sia.1737

Cited by 51 publications

(56 citation statements)

References 4 publications

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“…Energetic ions, electrons, and UV photons in plasmas can possess sufficient energy to break chemical bonds on the target surface, producing highly reactive free radicals which assist in forming the desired charged surface groups and increasing the overall energy density of the surface. Plasma modification has been reported as a method for reducing processing temperatures and improving bond strength for microfluidic chips fabricated from a range of thermoplastics including PMMA (Abgrall et al 2007;Brown et al 2006;Lee et al 2005;Johansson et al 2002;Kettner et al 2006;Pepin et al 2002), COC Johansson et al 2002;Puntambekar et al 2002;Nikolova et al 2004;Bhattacharyya and Klapperich 2007), PC Klintberg et al 2003), PS (Bhattacharyya and Klapperich 2007), and PET (Wu et al 2002) using both oxygen and ambient air plasmas. Notably, Bhattacharyya and Klapperich reported a two to threefold improvement in bond strength for COC and PS surfaces exposed to a 10 W air plasma source followed by thermal bonding at the same temperatures as untreated surfaces (Bhattacharyya and Klapperich 2007).…”

Section: Surface Treatment and Modificationmentioning

confidence: 99%

Bonding of thermoplastic polymer microfluidics

Tsao

DeVoe

2008

Microfluid Nanofluid

534

442

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Thermoplastics are highly attractive substrate materials for microfluidic systems, with important benefits in the development of low cost disposable devices for a host of bioanalytical applications. While significant research activity has been directed towards the formation of microfluidic components in a wide range of thermoplastics, sealing of these components is required for the formation of enclosed microchannels and other microfluidic elements, and thus bonding remains a critical step in any thermoplastic microfabrication process. Unlike silicon and glass, the diverse material properties of thermoplastics opens the door to an extensive array of substrate bonding options, together with a set of unique challenges which must be addressed to achieve optimal sealing results. In this paper we review the range of techniques developed for sealing thermoplastic microfluidics and discuss a number of practical issues surrounding these various bonding methods.

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Section: Surface Treatment and Modificationmentioning

confidence: 99%

Bonding of thermoplastic polymer microfluidics

Tsao

DeVoe

2008

Microfluid Nanofluid

534

442

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“…For instance, plasma treatment has been employed successfully to increase the hydrophilicity of the plastics. [9][10][11][12][13] This is a rather aggressive method that generates a large number of polar groups such as hydroxyl groups. However, this technique is difficult to implement on an industrial scale since it requires expensive high vacuum systems.…”

Section: Surface Chemistry and Immobilization Of Dna On Poly(cyclic Omentioning

confidence: 99%

Surface modification of thermoplastics—towards the plastic biochip for high throughput screening devices

et al. 2007

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/npsi/ctrl?action=rtdoc&an=3539033&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=3539033&lang=frAccess and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1039/b700322fLab on Chip, 7, 2007-01-01 Microarrays have become one of the most convenient tools for high throughput screening, supporting major advances in genomics and proteomics. Other important applications can be found in medical diagnostics, detection of biothreats, drug discovery, etc. Integration of microarrays with microfluidic devices can be highly advantageous in terms of portability, shorter analysis time and lower consumption of expensive biological analytes. Since fabrication of microfluidic devices using traditional materials such as glass is rather expensive, there is great interest in employing polymeric materials as a low cost alternative that is suitable for mass production. A number of commercially available plastic materials were reviewed for this purpose and poly(methylmethacrylate) Zeonor 1060R and Zeonex E48R were identified as promising candidates, for which methods for surface modification and covalent immobilization of DNA oligonucleotides were developed. In addition, we present proof-of-concept plastic-based microarrays with and without integration with microfluidics.

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“…In an another field of application, that is the adhesion to metal, Nikolova et al [126] came to the same conclusion that LMWOM and additives concentration at the surface of polymer could play a role in the plasma-induced surface modification. They studied Topas 6017's adhesion to Al and Cu.…”

Section: Plasma Treatment Of Cocmentioning

confidence: 93%

Physico-chemical ageing of ethylene–norbornene copolymers: a review

et al. 2017

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The main object of this report is to review and summarize the current state of the scientific literature relating to physico-chemical ageing of ethylene-norbornene copolymers (ENCs). These processes occur through different means such as photodegradation under the effect of ultraviolet radiation, temperature and ionizing radiation (under air or oxygen). In most cases ageing causes chains scissions that lead to the creation of degradation compounds that exhibit high mobility, corresponding to their low molecular weight and/or high polarity. Cross-linking can also occur, leading to the modification of mechanical properties. The presence of oxygen during ageing is of great importance for the physico-chemical modifications of those polymers in terms of oxidation and thermal stability. ENCs belong to cyclic olefin copolymers (COC) class, whose synthesis was developed in the late 1950s. Nevertheless, commercial applications are relatively new. They attract growing interest in different fields, due to their very useful physical and chemical properties such as transparency, heat and chemical resistance, low permeability to gas as well as biocompatibility. In the literature, a large number of papers deal with the synthesis and characterization of different grades of ENC, but only a few deal with the effects of ageing on these materials. This literature review consists of a summary of the main milestones in the development of COC as well as of cyclic olefin polymers (COP), a review of main techniques for predicting ageing, degradation of additives and interaction between COC/COP and contact environment as well as toxicity of the extractables.

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Surface modification of cycloolefinic copolymers for optimization of the adhesion to metals

Cited by 51 publications

References 4 publications

Bonding of thermoplastic polymer microfluidics

Bonding of thermoplastic polymer microfluidics

Surface modification of thermoplastics—towards the plastic biochip for high throughput screening devices

Physico-chemical ageing of ethylene–norbornene copolymers: a review

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