Surface modification of polystyrene and poly(methyl methacrylate) by active oxygen treatment

Murakami, Takurou N.; Fukushima, Yoshinori; Hirano, Yoshiaki; Tokuoka, Yoshikazu; Takahashi, Mitsuo; Kawashima, Norimichi

doi:10.1016/s0927-7765(02)00189-3

Cited by 82 publications

(64 citation statements)

References 15 publications

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“…The oldest processes are wet chemical techniques. [16][17][18][19][20] Polystyrene functionalization employing atomic oxygen treatments 17,21 is a well-documented example of such wet chemistry approaches. However, the complex downstream treatment of costly and sometimes hazardous solvents hinders the application of wet chemistry approaches on a larger scale.…”

Section: Introductionmentioning

confidence: 99%

Gas-Phase Surface Engineering of Polystyrene Beads Used to Challenge Automated Particle Inspection Systems

Labonté

Marion

Virgilio

2016

Ind. Eng. Chem. Res.

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Container challenge sets, used in the qualification and validation of automated visible particle inspection systems in the parenteral drug industry, are prepared by seeding a single standardized polystyrene-divinylbenzene (PS-DVB) bead inside the commercial product to mimic foreign particulates. Due to its low surface energy and wettability, the bead adheres to container walls, hindering its detection by the motion based inspection system. The aim of this research is to modify the surface properties of the bead in such a way that it repulses the inner walls and stays in suspension inside the liquid product. The surface treatment consists of a photoinduced chemical vapor deposition (PICVD) process using syngas and UVC light. Following 2 treatment, newly grafted C-OH, C-O-C, C=O and COOH functional groups on the bead's surface are observed by XPS and FTIR spectroscopy, leading to an increase in the surface energy from 31 ± 1 to 65 ± 2 mJ/m 2 , and a corresponding zeta potential decrease from -38 mV to -61 mV.Finally, treated 100 µm, 200 µm and 500 µm PS-DVB beads suspended in water exhibit higher dispersion stability over time than untreated beads. These results show the potential of syngas PICVD to provide an effective solution to the stability issue of containers challenge sets for the validation of automated particle inspection systems, enabling significant savings of time and money to the parenteral drug industry.

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Section: Introductionmentioning

confidence: 99%

Gas-Phase Surface Engineering of Polystyrene Beads Used to Challenge Automated Particle Inspection Systems

Labonté

Marion

Virgilio

2016

Ind. Eng. Chem. Res.

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“…Consequently, there is a considerable interest in the fundamental understanding of nanomaterial properties and in their applications in electronic, optical, and mechanical devices, drug delivery, bioencapsulation, and many other fields. [31,32] Among the numerous techniques reported, template synthesis is an elegant approach [33,34] by which inorganic and organic constituents can be introduced into the void spaces of micro-or nanoporous host materials. Here we demonstrated that the polymer films with patterned surfaces prepared through such a SNS method in this work can also be used as templates.…”

Section: Templates For Micro-/nanomaterialsmentioning

confidence: 99%

Phase-Separation-Induced Micropatterned Polymer Surfaces and Their Applications

Wang

Liu²,

Han

et al. 2005

Adv. Funct. Mater.

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We report a route to fabricate micropatterned polymer films with micro‐ or nanometer‐scale surface concavities by spreading polymer solutions on a non‐solvent surface. The route is simple, versatile, highly efficient, low‐cost, and easily accessible. The concavity density of the patterned films is tuned from 106 to 109 features cm–2, and the concavity size is controlled in the range from several micrometers to less than 100 nm, by changing the film‐forming parameters including the polymer concentration, the temperature of the non‐solvent and the interactions between polymer, solvent, and non‐solvent. We further demonstrate that these concavity‐patterned films have significantly enhanced hydrophobicity, owing to the existence of the surface concavities, and their hydrophobicity could be controlled by the concavity density. These films have been used as templates to successfully fabricate convex‐patterned polymer films, inorganic TiO2 microparticles, and NaCl nanocrystals. Their other potential applications are also discussed.

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“…The use of ozone and UV/ozone was not limited to surface treatment of silicone rubber. In fact, O 3 was used to enhance the polarity and the reactivity or the adhesion to surfaces of polystyrene [15,16], polypropylene [17,18], polyethylene [19] and ultra high molecular weight polyethylene [20], styreneebutadieneestyrene block copolymers [21], poly(ethylene terephthalate) [22,23]. Not only synthetic polymers were successfully surface treated with ozone, a similar process was also applied to naturally occurring polymers such as wool [24], lignocellulosic fibres [25], starch [26] and zein (a protein from maize and corn gluten meal) used for fibres or as food additive [27].…”

Section: Introductionmentioning

confidence: 99%