58
on the surface of the modified GTR, which affected their more hydrophilic behavior. The scheme of oxygen pretretment of GTR and its low-temperature plasma
modification process is presented in Fig. 4.11. This phenomenon resulted in the
improvement of dispersibility, which resulted in better mechanical properties of
cement filled with modified GTR.
In general, grafting techniques can produce subsequent reactions of grafted
monomers with the corresponding matrices and an improvement in the properties of
the materials investigated. The modifications can also change the surface energy of
the GTR by improving the wettability of the matrix and reducing the tendency to
agglomerate the GTR particles.
4.4 Conclusions and Future Trends
In the past 15 years, many attempts at reactive processing and functionalization of
ground tire rubbers (GTR) have been depicted, and in this chapter they were summarized. It seems that GTR sintering, functionalization and modification are very
Fig. 4.11 Oxygen pretreatment and low temperature plasma modification of GTR in the presence
of ethanol. Based on the mechism proposed by Xiaowei et al. (2017)
Fig. 4.10 Grafting of acrylic acid onto GTR without initiators. Based on the mechanism proposed
by Kocevski et al. (2012)
Ł. Zedler et al.
on the surface of the modified GTR, which affected their more hydrophilic behavior. The scheme of oxygen pretretment of GTR and its low-temperature plasma
modification process is presented in Fig. 4.11. This phenomenon resulted in the
improvement of dispersibility, which resulted in better mechanical properties of
cement filled with modified GTR.
In general, grafting techniques can produce subsequent reactions of grafted
monomers with the corresponding matrices and an improvement in the properties of
the materials investigated. The modifications can also change the surface energy of
the GTR by improving the wettability of the matrix and reducing the tendency to
agglomerate the GTR particles.
4.4 Conclusions and Future Trends
In the past 15 years, many attempts at reactive processing and functionalization of
ground tire rubbers (GTR) have been depicted, and in this chapter they were summarized. It seems that GTR sintering, functionalization and modification are very
Fig. 4.11 Oxygen pretreatment and low temperature plasma modification of GTR in the presence
of ethanol. Based on the mechism proposed by Xiaowei et al. (2017)
Fig. 4.10 Grafting of acrylic acid onto GTR without initiators. Based on the mechanism proposed
by Kocevski et al. (2012)
Ł. Zedler et al.