Method for grating polymerized ammonium sulphonate inner salt on surface of glass

Abstract

The invention discloses a method for grating a polymerized ammonium sulphonate inner salt on the surface of glass. An ammonium sulphonate inner salt monomer is taken as a grating monomer on a glass substrate, and a simple silane coupling agent grating method is used to construct a molecular structure of the polymerized ammonium sulphonate inner salt on the surface of the glass. The grafting method is as follows: a glass sheet is treated by a Piranha solution to produce a hydroxide radical on the surface of the glass, then the glass sheet is reacted with a silane coupling agent, vinyl produced on the surface of the glass is finally polymerized in a grafting manner with the ammonium sulphonate inner salt monomer, so that the molecular structure of the ammonium sulphonate inner salt is constructed on the surface of the glass. The method has the advantages that the molecular structure of the ammonium sulphonate inner salt is proved to have an excellent anticoagulant activity, the molecular structure of the ammonium sulphonate inner salt is directly constructed on the surface of the glass after the ammonium sulphonate inner salt monomer is reacted with an active functional group of the silane coupling agent, so that a novel anticoagulant biomaterial having excellent anticoagulant activity and mechanical property is obtained.

Description

technical field [0001] The invention relates to a method for preparing an anticoagulant inorganic material, in particular to a method for grafting and modifying glass by using ammonium polysulfonate inner salt. Background technique [0002] Amphoteric polymers are polymers and polyelectrolytes that can simultaneously dissociate positively and negatively charged groups in aqueous solution. We usually call the positive and negative charged groups on the same chain link as the inner salt polymer (polyzweitterion) or betaine polymer (Polybetaine). The common zwitterionic polymers mainly have three structures, that is, there are mainly three types of ammonium phosphate (Phosphobetaine), sulfonium (Sulfobetaine) and carboxybetaine (Carboxybetaine). Quaternary ammonium cations and sulfonate anions, which have good properties and are not easily affected by the pH value of the solution, have attracted much attention. Because there are positive and negative ions on the same side cha...

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Problems solved by technology

However, the research on the construction of polysulfonic acid internal salt structure on the surface of biomedical inorganic materials such as glass, silicon wafers and ceramics by silane coupling agent method has not been reported yet.

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