Supporting information to accompany
Single-Step Process to Produce Functionalized Multiresponsive
Polymeric Particles
Antoine Bousquet1, Emmanuel Ibarboure1, Valérie Héroguez, 1Eric Papon, 1
Christine Labrugere,2 Juan Rodríguez-Hernández1,3*
1
Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS, Université Bordeaux I,
ENSCPB. 16, Avenue Pey Berland, 33607, Pessac-Cedex.
2
Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB-CNRS), 87, Av. Albert
Schweitzer 33600, Pessac.
3
Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC) C/ Juan de la Cierva n°3 28006
Madrid Fax: (34) 91 564 48 53; Tel: (34) 91 258 75 05; E-mail: jrodriguez@ictp.csic.es
Estimation of the amount of diblock copolymer encapsulated.
1) First, it is necessary to create a reference plot in which are plotted the % of block
copolymer P1 in the mixture (see below) and the intensity of the C=O signal. The
reference plot was constructed by analyzing the IR spectra obtained from mixtures
prepared with reference particles (i.e. containing only S and DVB) and diblock
copolymer P1 at different weight percent (from 5 to 30%).
The aromatic signal at ~ 1600 cm-1 was set to 1 in all the spectra and the intensity of
the C=O signal (at 1730cm-1) for the different mixtures is plotted.
The values of the intensity obtained for the C=O signal:
0
0,152
0,289
0,605
0,933
Percentage of
diblock copolymer
P1in the mixture
0%
5%
10%
20%
30%
1,0
Intensity of the C=O signal
Intensity of the
C=O signal
0,8
0,6
0,4
0,2
0,0
0
2
4
6
8
10 12 14 16 18 20 22 24 26 28 30 32
% of diblock copolymer in the blend
The values obtained can be adjusted to a line with an equation: y=0,00806 x
2) Once the reference plot has been constructed, the value of the intensity of the C=O
signal obtained in the IR spectra (again the aromatic signal at 1600cm-1 has to be set to
1) can be introduced in the equation depicted below. As a result we are able to
estimate the composition of the particle, i.e. real percentage of diblock copolymer
within the particle obtained. The values obtained were:
Particles
P1/30
P1/20
P1/10
P1/5
Percentage of diblock
copolymer introduced
in the feed prior to
polymerization
30
20
10
5
Intensity of the C=O
signal
Percentage of diblock
copolymer (P1) in the
particles
0,266
0,152
0,084
0,061
8,86
5,1
2,8
2,0
3) Knowing the % of diblock copolymer P1 encapsulated within the particles and the % of
diblock copolymer P1 introduced initially in the feed, we are able to determine de
efficiency of the encapsulation process as:
Encapsulation efficiency = (% of diblock in the particle)/(% of diblock in the feed prior
to polymerization)*100
Thus, by using this equation we can construct the following table:
Particles
P1/30
P1/20
P1/10
P1/5
Percentage of diblock
copolymer introduced
in the feed prior to
polymerization (A)
30
20
10
5
Percentage of
diblock copolymer
(P1) in the particle
(%) (B)
8,86
5,1
2,8
2,0
Encapsulation
efficiency (%)
E=B/A
29,5
25,5
28
40