Effects of mixed hydrocolloids on water-based multicolor coatings
CHANG YuXin JI Jing WANG Feng LIU JingJun(College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China)
A study of the synergistic interactions between some hydrocolloids and their application in water-based multicolor coatings is reported. The gelling properties of the sodium alginate-gelatine system and the effect of electrolytes have been investigated in detail in order to improve the gel strength of dispersed globules in the coating. The interactions between sodium alginate and gelatine have been investigated by FT-IR spectrometry. The results showed that the sodium alginate-gelatine system had good gelling ability and can give significant improvements in coating performance. The optimum electrolyte concentration is 0.05 mol/L,the optimum gelatinizing agent concentration is 10 g/L,and the optimum ratio of sodium alginate to gelatine is 7:3.
【CateGory Index】： TQ637