Abstract: A kind of bio-based adhesive used for making the rice seeding sheet and its synthesizing process were introduced. The bio-based adhesive which met the requirement was prepared from starting material corn starch which was first modified by cooking with alkaline pulps,then oxidation and cross-linking. The influences of reaction temperature and time,dosage of oxidizer and cross-linkier on the properties of the adhesive were discussed.The synthesis condition was: oxidation temperature, 50℃; oxidation time,120 min; oxidizer dosage, 6%(based on starch) and mass ratio of cross-linkier to starch, 2:5. The structure of the adhesive was characterized with IR. At last,the breeding test shown that there was no negative impact on the germination of seeds when using the adhesive.

Key words: bio-based adhesive, modified starch, rice seeding