Microcapsules adventatial can be used by hydrophilic polymers for material, such as glutin, pectoylic, agaragar, aclylate cellulytic and methacrolein.

囊外膜可由亲水性的高聚物作材料，如明胶、果胶、琼脂、甲基纤维素及丙烯酸类。