The puffing glutinous rice starch (PGRS) could be obtained by adding glutinous broken rice into bulking machine and expanding at a certain temperature and pressure. The starch granule disintegrated after puffing and therefore more hydrophilic hydroxyls were exposed. The water-solubility of PGRS was increased which was shown in IR spectrometry with a broad and strengthened peak of O-H stretching vibration. Scanning electron micrograph (SEM) found that the PGRS granules were in shape of rough surface, which would be a strong affinity for water. Therefore, it could be used to prepare corrugated cardboard case adhesive, stamp envelope adhesive and wallpaper adhesive.
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