The
synthesis of Cm was carried out in two steps. First, 3.72
g of C was dispersed in 241 mL of DMF and 6.93 mL of TEA by magnetic
stirring in a round flask under an inert atmosphere at 0 °C.
Then, 2.12 mL of acryloyl chloride was added dropwise. After 3 h,
the obtained product (functionalized cork, Cf) was purified
by filtered under vacuum washing with DMF and dried. Then, 3.25 g
of Cf was dispersed in 195 mL of toluene by magnetic stirring
in a round flask and 42.7 mL of nBA (1.5 M) was slowly
added to the mixture. Then, the flask was closed with a septum and
nitrogen was bubbled into the mixture. Finally, 0.192 g of AIBN (0.006
M) was added and the mixture was heated up to 70 °C to start
the polymerization. The reaction was stopped after 24 h, and the product
(Cm) was washed with toluene, isopropanol, and water to
remove any excess of the unreacted monomer. After this, the product
was filtered and dried under vacuum. Characterization of C, Cf, and Cm was done by infrared spectroscopy via
attenuated total reflectance (ATR) in a Bruker Alpha spectrometer.
The morphology of the particles was examined by scanning electron
microscopy (SEM) in an FEI Nova NanoSEM 450 microscope equipped with
a field-emission gun. The particles were previously sputtered with
a few nm layer of Au in a Balzers SCD 004 Sputter Coater.
synthesis of Cm was carried out in two steps. First, 3.72
g of C was dispersed in 241 mL of DMF and 6.93 mL of TEA by magnetic
stirring in a round flask under an inert atmosphere at 0 °C.
Then, 2.12 mL of acryloyl chloride was added dropwise. After 3 h,
the obtained product (functionalized cork, Cf) was purified
by filtered under vacuum washing with DMF and dried. Then, 3.25 g
of Cf was dispersed in 195 mL of toluene by magnetic stirring
in a round flask and 42.7 mL of nBA (1.5 M) was slowly
added to the mixture. Then, the flask was closed with a septum and
nitrogen was bubbled into the mixture. Finally, 0.192 g of AIBN (0.006
M) was added and the mixture was heated up to 70 °C to start
the polymerization. The reaction was stopped after 24 h, and the product
(Cm) was washed with toluene, isopropanol, and water to
remove any excess of the unreacted monomer. After this, the product
was filtered and dried under vacuum. Characterization of C, Cf, and Cm was done by infrared spectroscopy via
attenuated total reflectance (ATR) in a Bruker Alpha spectrometer.
The morphology of the particles was examined by scanning electron
microscopy (SEM) in an FEI Nova NanoSEM 450 microscope equipped with
a field-emission gun. The particles were previously sputtered with
a few nm layer of Au in a Balzers SCD 004 Sputter Coater.