Germs resisting and self cleaning infiltration thin film and manufacturing method thereof
AssigneeChung-Shan Institute of Science and Technology, Armaments Bureau of National Defense
InventorsCHENG-CHIEN YANG, Kuo-Hui Wu, Wang-Tsai Gu, Yu-Zen Hsieh, Mang-Zhi Wu
Life of this patent
Estimating the term…
Abstract
The invention provides a germs resisting and self-cleaning infiltration thin film and manufacturing method thereof. At first, a Polyethyleneimine (PEI) and a Polyvinyl Alcohol (PVA) are used to make a polymer thin film. Then, a germ resistant and an inorganic metal oxide are added into the polymer thin film to form the selective infiltration thin film capable of resisting germs and self-cleaning.
Claims10
An improvement on method of manufacturing a selective infiltration thin film, subject to a qualitative suspension test and a bacteriostatic ring test with a diameter D of a bacteriostatic circle, comprising the steps of:
- (a) mixing Polyethyleneimine (PEI) and Polyvinyl Alcohol (PVA) of an appropriate ratio for a polymer thin film;
- (b) adding an mount M of a germ resistant containing silver ion (Ag+) or an inorganic metal oxide, in particular, Polyoxometalate (POM) into the polymer thin film;
- and
- (c) forming the selective infiltration thin film;
- wherein there exists a positive linear correlation between the amount M and the diameter D of a bacteriostatic circle in the bacteriostatic ring test targeting bacstaphylococcus aureus (8099 ATCC 25923), bacillus subtilis, pseudomonas aeruginosa (8099 ATCC 27853), and Escherichia coli at a constant temperature 37° C., or equivalently, in Pearson's product-moment formula,
- M=r·D,
- where r represents a linear correlation coefficient, and 0<r<1.
(canceled)
(canceled)
(canceled)
A selective infiltration thin film, subject to a qualitative suspension test and a bacteriostatic ring test with a diameter D of a bacteriostatic circle, made of:
- Polyethyleneimine;
- Polyvinyl Alcohol;
- an amount M1 of germ resistant containing silver ion (Ag+);
- and
- an amount M2 of inorganic metal oxide, in particular, Polyoxometalate (POM);
- wherein Polyethyleneimine and Polyvinyl Alcohol of appropriate ratio are used for a polymer thin film,
- the germ resistant containing silver ion (Ag+) or the inorganic metal oxide, in particular, Polyoxometalates (POM) is added for the selective infiltration thin film, and
- there exists a positive linear correlation between M1 μM2 and D, respectively, with D being obtained from the bacteriostatic ring test targeting bacstaphylococcus aureus (8099 ATCC 25923), bacillus subtilis, pseudomonas aeruginosa (8099 ATCC 27853), and Escherichia coli at a constant temperature 37° C.
(canceled)
(canceled)
(canceled)
Dependencies are inferred from the claim text.