Premium
Preparation, characterization, and water resistance of cationic acetylated starch‐ g ‐poly(styrene‐butyl acrylate) surfactant‐free emulsion
Author(s) -
Mou Jing,
Li Xiaorui,
Wang Haihua,
Fei Guiqiang,
Liu Qin
Publication year - 2012
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.201200041
Subject(s) - cationic polymerization , styrene , polymer chemistry , copolymer , acrylate , monomer , starch , thermogravimetric analysis , materials science , grafting , nuclear chemistry , emulsion , fourier transform infrared spectroscopy , butyl acrylate , emulsion polymerization , contact angle , chemistry , chemical engineering , organic chemistry , polymer , composite material , engineering
Cationic acetylated starch‐ g ‐poly(styrene‐butyl acrylate) surfactant‐free emulsion (CAS‐ g ‐poly(St‐BA)) was synthesized by graft copolymerization of styrene (St) and butyl acrylate (BA) onto CAS using FeSO 4 –H 2 O 2 redox initiator. The maximum graft of 55.68% was derived when H 2 O 2 concentration, monomer concentration, and St/BA ratio were 9%, 130%, and 1:1, respectively. The results obtained from FTIR, NMR (H 1 NMR and C 13 NMR), XRD, SEM, and thermogravimetric analysis (TGA‐DTG) confirmed graft copolymerization of St and BA onto CAS. And it was demonstrated that film‐forming properties of starch were greatly improved via grafting St and BA onto starch. It was also found that paper sized with CAS‐ g ‐poly(St‐BA) exhibited higher ring crush index and bursting strength than paper sized with cationic potato starch (CS) and CAS, as well as much lower water absorption, which is further verified by contact angles results.