Synthesis and characterisation of water dispersible copolymer submicron spheres of poly-(phenylenediamine-co-N-sulfopropyl aniline) via random copolymerisation

Article abstract of DOI:10.1016/j.polymer.2016.01.078

The homopolymers of poly-phenylenediamines (P-PD's) and poly-N-sulfopropyl aniline (PSPA) were synthesized via chemical oxidative polymerization of phenylenediamine monomers and sulfopropyl aniline using ammonium persulfate as oxidizing agent in acidified medium. Three homopolymers of phenylenediamines synthesised were poly (m-phenylenediamine) P-MPD, poly (p-phenylenediamine) P-PPD and poly (o-phenylenediamine) P-OPD. Poly-N-sulfopropyl aniline (PSPA) is a self doped water soluble conducting polymer. Random copolymerization of N-sulfopropyl aniline and phenylenediamines would enhance the solubility of the copolymer nanomaterials. Three different copolymer compositions (COP25, COP50 and COP75) were employed for copolymer synthesis based on weight percentage of co-monomer's feed taken. Homopolymers and copolymers were characterized by fourier-transform infrared spectroscopy (FT-IR) and elemental analysis. The UV-Visible absorption spectra of the samples in water were shown the characteristic polaron- π?and π-π?peaks. The solid state ordering of the samples recorded by powder wide angle x-ray diffraction studies reveals that homopolymer samples were partially crystalline, whereas copolymers were either amorphous or less crystalline than homopolymer. Morphological features of the polymers and copolymers were recorded by scanning electron microscope (SEM). Poly (m-Phenylenediamine) was present as uniformly distributed submicron spheres with an average size of 850 ± 50 nm, whereas the poly (p-phenylenediamine) was present as non-uniform spheres with size in the range 600 ± 100 nm. The P-OPD sample was highly crystalline and it has shown some ordered rod like structures. Interestingly, all copolymer samples like M-COP25, P-COP25, and O-COP25 were formed as uniform submicron spheres. Poor water solubility of poly-phenylenediamines in aqueous solution was increased tremendously upon copolymerization.

Full text of DOI:10.1016/j.polymer.2016.01.078

Accepted Manuscript
Synthesis and Characterisation of Water Dispersible Copolymer Submicron Spheres
of Poly-(Phenylenediamine-co-N-Sulfopropyl Aniline) via Random Copolymerisation
K. Rohini Das, M. Jinish Antony
PII:
S0032-3861(16)30078-7
10.1016/j.polymer.2016.01.078
JPOL 18430
DOI:
Reference:
To appear in: Polymer
Received Date: 8 September 2015
Revised Date: 26 January 2016
Accepted Date: 30 January 2016
Please cite this article as: Rohini Das K, Jinish Antony M, Synthesis and Characterisation of Water
Dispersible Copolymer Submicron Spheres of Poly-(Phenylenediamine-co-N-Sulfopropyl Aniline) via
Random Copolymerisation, Polymer (2016), doi: 10.1016/j.polymer.2016.01.078.
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ACCEPTED MANUSCRIPT
reference: JPOL 18430, Article reference: JPOL_POLYMER-15-1719, Article title.
Dear Dr. S Raja,
Please remove the figure 6(c) caption highlighted below. Figure 6 C is not attached with figure 6
Figure 6. W-XRD diffractogram of A) P-MPD, M-COP75, M-COP50, M-COP25, PSPA B) PPPD, P-COP75,
P-COP50, P-COP25, PSPA C) P-OPD, O-COP50, O-COP25, PSPA
In fact the same is given as figure and figure caption in figure 7 . see below
Figure 7. WXRD diffractogram of P-OPD, O-COP50, O-COP25 and PSPA.
Thanking You
Dr, Jinish Antony M

ACCEPTED MANUSCRIPT
HIGHLIGHTS
•
The homopolymers of poly-phenylenediamines (P-PD’s) and poly-N-sulfopropyl
aniline (PSPA) were synthesized via chemical oxidative polymerization of
phenylenediamine monomers and sulfopropyl aniline using ammonium persulfate as
oxidizing agent in acidified medium.
•
•
Three homopolymers of phenylenediamines synthesised were poly (m-
phenylenediamine) P-MPD, poly (p-phenylenediamine) P-PPD and poly (o-
phenylenediamine) P-OPD.
Poly-N-sulfopropyl aniline (PSPA) is a self doped water soluble conducting polymer.
Random copolymerization of N-sulfopropyl aniline and phenylenediamines would
enhance the solubility of the copolymer nanomaterials.
•
•
•
•
Three different copolymer compositions (COP25, COP50 and COP75) were
employed for copolymer synthesis based on weight percentage of co-monomers feed.
Homopolymers and copolymers were characterized by fourier-transform infrared
spectroscopy (FT-IR) and elemental analysis.
The uv-visible absorption spectra of the samples in water were shown the
characteristic polaron- π* and π-π* peaks.
The solid state ordering of the samples recorded by powder wide angle x-ray
diffraction studies reveals that homopolymer samples were partially crystalline,
whereas copolymers were either amorphous or less crystalline than homopolymer.
Morphological features of the polymers and copolymers were recorded by scanning
electron microscope (SEM). Poly (m-Phenylenediamine) was uniformly distributed
submicron spheres with an average size of 850± 50 nm, whereas the poly (p-
phenylenediamine) non-uniform spheres with size in the range 600-100 nm.
The P-OPD sample was highly crystalline and shown some ordered rod like
structures.
•
•
•
•
Interestingly, all copolymer samples like M-COP25, P-COP25, and O-COP25 were
formed as uniform submicron spheres.
Poor water solubility of poly-phenylenediamines in aqueous solution was increased
tremendously upon copolymerization.