TY - JOUR
T1 - Starch-graft-(synthetic copolymer) latexes initiated with Ce4+ and stabilized by amylopectin
AU - De Bruyn, Hank
AU - Sprong, Ewan
AU - Gaborieau, Marianne
AU - Roper, John A.
AU - Gilbert, Robert G.
PY - 2007
Y1 - 2007
N2 - A method is presented for synthesizing surfactant-free latexes comprising starch-graft-(vinyl polymer) starting with a suspension of amylopectin, either native or modified, then using cerium(IV) with either potassium persulfate or glucose to create grafting sites on the starch. Latex particles comprising polystyrene, poly(styrene- co-(n-butyl acrylate)) and poly(vinyl acetate) grafted onto high molecular weight amylopectin were developed, with up to 80% of the starch effectively grafted to the particles. These latexes were colloidally stable against electrolyte (several months in 4 M NaCl). Reaction rates of Ce4+ with simple sugars and polysaccharides were investigated, as well as the gelation mechanism of the latex.
AB - A method is presented for synthesizing surfactant-free latexes comprising starch-graft-(vinyl polymer) starting with a suspension of amylopectin, either native or modified, then using cerium(IV) with either potassium persulfate or glucose to create grafting sites on the starch. Latex particles comprising polystyrene, poly(styrene- co-(n-butyl acrylate)) and poly(vinyl acetate) grafted onto high molecular weight amylopectin were developed, with up to 80% of the starch effectively grafted to the particles. These latexes were colloidally stable against electrolyte (several months in 4 M NaCl). Reaction rates of Ce4+ with simple sugars and polysaccharides were investigated, as well as the gelation mechanism of the latex.
KW - biomedical materials
KW - colloids
UR - http://handle.uws.edu.au:8081/1959.7/504773
M3 - Article
SN - 0887-624X
VL - 45
SP - 4185
EP - 4192
JO - Journal of Polymer Science. Part A\, Polymer Chemistry
JF - Journal of Polymer Science. Part A\, Polymer Chemistry
IS - 18
ER -