Sichuan Huili Industry Co., Ltd.

Bin Yan

Hui Zhang

Jinzhi Bai

The present invention discloses a film for a medicine packaging and a method of preparing the same. The film for the medicine packaging includes a polymer film layer, a graphene composite layer and a light-curable adhesive, wherein the polymer film layer is bonded with a graphene composite layer by a light-curable adhesive, the graphene composite layer includes multiple graphene layers bonded by the light-curable adhesive; and the light-curable adhesive includes a hyperbranched cationic mussel-imitated polymer including a multi-hydroxylbenzoylbenzamide ene amide monomer, a cationic monomer and a photo-responsive monomer. The present invention provides strong adhesion with reduced adhesive layer, allowing greatly increasing the number of the graphene layers in the graphene composite layer without obvious increase in the total thickness and mass. This can meet the requirements of the medicine packaging material, as it obviously lowers the film's permeation to water vapor and oxygen and significantly enhances the tensile strength.

Film for medicine packaging and method of preparing the same

The present invention discloses a hyperbranched cationic mussel-imitated polymer and a method of preparing the same. The hyperbranched polymer disclosed in the present invention has the excellent mussel-imitated non-selective adhesive property, good biocompatibility and adhesive strength adjustability. The method of the present invention includes the following steps: (A) adding an initiator, a RAFT agent and a first reaction mixture to a vessel containing DMF to form a second reaction mixture; (B) stirring the second reaction mixture until homogenous, and introducing argon to a reaction system to remove oxygen in the reaction system; (C) heating and stirring the second reaction mixture to carry out a reaction; (D) after a product with a desired molecular weight being produced, the reaction system being exposed to air and cooled rapidly in a cold water bath to terminate the reaction; and (E) purifying the product to obtain the hyperbranched cationic mussel-imitated polymer.

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Sichuan, China

Bin Yan