Linear organoalkoxysilane‐based RAFT agent functionalized polydimethylsiloxane (RAFT‐PDMS) has been prepared for the first time via co‐condensation of a new organoalkoxysilane based RAFT agent ...(RAFT‐Agent), 2‐((methyldimethoxysilyl)propyl)carbontrithio‐2‐methyl‐propanoicacidmethylester, with diethoxydimethylsilane (DDS) in an aqueous acidic solution. The RAFT‐Agent and RAFT‐PDMS was confirmed by FT‐IR and 1H NMR spectroscopy techniques. The obtained RAFT‐PDMS was used to prepare the silicone‐modified polyacrylate anti‐graffiti emulsions via RAFT polymerization with functional monomers. The living character of RAFT polymerization of RAFT‐PDMS and the narrow molecular weight distribution of the polymerization product were confirmed by GPC. The transformation of the particle state from a small micelle structure to a spherical core‐shell micelle structure during polymerization was verified by TEM and dynamic light scattering analysis. Moreover, DSC and TGA analysis disclosed that increasing the content of RAFT‐PDMS can reduce the glass transition temperature and improve the thermal stability of the resin. Finally, the effect of RAFT‐PDMS on the surface morphology and properties of coatings were examined by SEM and contact angle. These experimental results suggest that increasing the content of RAFT‐PDMS increases the surface porosity of the coating film and thus enhances its hydrophobic properties.
Political Graffiti in Critical Times Ricardo Campos, Yiannis Zaimakis, Andrea Pavoni / Ricardo Campos, Yiannis Zaimakis, Andrea Pavoni
02/2021, Volume:
28
eBook
Whether aesthetically or politically inspired, graffiti is among
the oldest forms of expression in human history, one that becomes
especially significant during periods of social and political
...upheaval. With a particular focus on the demographic, ecological,
and economic crises of today, this volume provides a wide-ranging
exploration of urban space and visual protest. Assembling case
studies that cover topics such as gentrification in Cyprus, the
convulsions of post-independence East Timor, and opposition to
Donald Trump in the American capital, it reveals the diverse ways
in which street artists challenge existing social orders and
reimagine urban landscapes.
With the increase of graffiti since the beginning of the 1970s, the interest in proper removal and high-quality protection systems also have grown. To protect affected objects and buildings from ...damage caused by graffiti, anti-graffiti systems (AGS) can be used. In practice, it has already been shown that no AGS is suitable for all kind of surfaces. In this study, the effects of permanent anti-graffiti systems on various concrete surfaces are specifically investigated and evaluated with test series under natural weathering (over 3 years). The focus is put on functionality (visual influences) and durability (surface properties of the concrete).
Fifty years after May 68, spring 2018 in France was marked by mass student protest against the Parcoursup/ORE reform of university entry. After a riot police intervention on campus, Nanterre ...University was blocked and occupied. It was profoundly affected, both as a community and as a physical site. This linguistic ethnographic study proposes a systematic analysis of more than 500 physical interventions (political graffiti, tags and posters) on the campus during that period, to identify the functions of graffiti as political discourse. The graffiti (1) expressed resistance, reclaimed the university’s identity and manifested presence on site; (2) established dialogue with local and national authorities and (3) anchored the movement in a larger web of historical references and sites of political resistance. A striking feature was the complex indexicality of the graffiti. Each item was relevant at multiple scales beyond the here and now, anchoring graffiti in larger networks of relations, which endowed them with political power.
The article is based on the analysis of fieldwork studies of the local graffiti and street art production in Sofia, Bulgaria. The author argues that at present the majority of the graffiti writers ...there tend to produce TTP graffiti following the global graffiti tradition and taking into consideration its conventions and heritage. As a result of that the meaning of the local TTPs and street art is quite clear and understandable to the foreign TTP writers, to the majority of the young people in the city as well as to a growing group of connoisseurs. The rest usually see in the same writings either strange art or nothing but scribbles, oddly deformed letters and unclear symbolic images. The article interprets the processes of mutual understanding or misunderstanding which contribute to the creation of new types of coherences and differentiation in the local urban milieu.
Libri ricevuti
Studi slavistici,
01/2013, Volume:
10
Journal Article
Peer reviewed
Open access
2009. godine), Hrvatska akademija znanosti i umjetnosti, Institut za povijest umjetnosti, Katoli?ki bogoslovni fakultet Sveu?ilizta u Zagrebu, Staroslavenski institut, Sveu?ilizna knjiznica Rijeka, ...Op?ina Malinska-Dubaznica, Malinska-Rijeka-Zagreb 2011. Nikitenko N., Kornienko V., Drevnejzie graffiti Sofii Kievskoj i vremja ee sozdanija, Institut ukrainskoj archeografii i isto?nikovedenija im. The Battle and the Myth, Harvard University Press, Cambridge, Mass. 2012.
Urban art is a form of artistic visual expression and communication that is created in the street and generally in the public dimension of urban spaces. Often these kinds of artworks are in outdoor ...environments, and they usually suffer from atmospheric weathering and anthropic vandalism. Recently, several strategies have been used to limit or remove the effects of such vandalism. Currently, the use of quartz paints is growing among artists; such paints after setting are more porous and rough on the surface with respect to regular paints. The aim of the study is to assess the performance of anti-graffiti coatings on quartz artworks paints. Two anti-graffiti products were chosen, and their behaviors were assessed in the laboratory by means of contact angle measurement, water capillary test, colorimetric analysis, and optical and electron microscopy. Results showed good water repellence efficacy of the tested products, demonstrating that they are suitable for the protection of urban art, but at least two applications on the surface are needed to achieve good performance.
From Document to History, edited by Carlos Noreña and Nikolaos Papazarkadas, presents a series of new studies in Greek and Roman epigraphy, highlighting the contribution of documentary evidence to ...our understanding of ancient Greek and Roman history.
Esta poesía nace en el vacío que deja el regreso imposible; allí donde Ia palabra nombra una realidad que pugna por bullir en una permanente tensión entre memoria e imaginación; entre los fragmentos ...concretos de una cotidianidad vivida y el deseo que hace siempre otra cosa con Ia realidad tangible. Son poemas que trabajan Io que Gastón Bachelard llama Ia función primera del habitar" que, desde Ia ensoñación poética, nos devuelve a Ia concha inicial, a Ia casa como rincón del mundo, como albergue de Ia memoria, de los valores del espacio habitado, del aura familiar. Autora del ensayo La ciudad y sus bibliotecas: el graffiti quiteño y la crónica costeña (1999), la Antología del cuento ecuatoriano del siglo XX, que integra la Antología esencial publicada por Eskeletra en 2004; y Sartre y nosotros (Quito, 2008).
PDF
