A new simple controlled release delivery system.
The chemical pulping of wood without subsequent drying affords low-cost hollow fibers with microporous multilamellar cell walls saturated with water. Simple impregnation of these never-dried pulp fibers with solutions of biologically active chemicals followed by drying yields collapsed cellulose ribbons containing entrapped impregnant. The release characteristics of exemplary composites containing an analgesic (acetylsalicylic acid), a growth stimulant (alpha-naphthylacetic acid), or a herbicide (2,4-dichlorophenoxyacetic acid) are reported both for in vitro and in vivo evaluations.
D015084:2,4-Dichlorophenoxyacetic Acid / Q000008:administration & dosage; D001241:Aspirin / Q000008:administration & dosage; D002482:Cellulose; D003692:Delayed-Action Preparations; D007700:Kinetics; D009280:Naphthaleneacetic Acids / Q000008:administration & dosage; D010944:Plants; D014934:Wood
D003692:Delayed-Action Preparations; D009280:Naphthaleneacetic Acids; D015084:2,4-Dichlorophenoxyacetic Acid; D002482:Cellulose; D001241:Aspirin