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Application of response surface methodology (RSM) for optimization of cassava starch grafted polyDADMAC synthesis for cationic properties
Author(s) -
Razali Mohd A. A.,
Sanusi Nurhasikin,
Ismail Hanafi,
Othman Nadras,
Ariffin Azlan
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.201200007
Subject(s) - cationic polymerization , response surface methodology , starch , ammonium chloride , chemistry , grafting , polymerization , nuclear chemistry , chemical engineering , polymer chemistry , chromatography , polymer , biochemistry , organic chemistry , engineering
Response surface methodology was used to study the process optimization of cationic percentage through grafting diallyldimethylammonium chloride (DADMAC) into cassava starch. Based on Box–Behken design, quadratic models were developed to correlate the synthesis variables: concentration of DADMAC (A), concentration of initiator (B), and polymerization temperature (C), to the responses of cationic percentage ( y ). Analysis of variance (ANOVA) revealed that the concentration of initiator was the most significant variable for the response. The optimum preparation conditions for starch grafted polyDADMAC were 14% cationic using 31 g DADMAC/10 g dry starch of concentration DADMAC, a polymerization temperature of 74°C, and 4.92 g cerric ammonium nitrate/10 mL of initiator concentration.