GUANIDINE-FUNCTIONALIZED METAL SILICATE PARTICLES AND METHODS OF MAKING AND USING SUCH PARTICLES

摘要

Guanidine-functionalized particles and methods of making and using such particles are provided, such as guanidine-functionalized metal silicate particles. A nonwoven article is also provided including a porous fibrous nonwoven matrix and guanidine-functionalized metal silicate particles enmeshed within the porous fibrous nonwoven matrix. The nonwoven article may be used, for instance, for removing microorganisms from an aqueous sample by contacting a fluid sample with the nonwoven article such that at least a portion of the microorganisms are removed from the fluid sample.

主权项

1. A guanidine-functionalized metal silicate particle, comprising:
a metal silicate particle that is modified with at least one silane having the formula
X3-nRanSi—Y-G, wherein:
n is 0, 1, or 2;each Ra, if present, is independently an alkyl, aralkyl, or aryl;Y is a divalent group comprising an alkylene having 2 to 20 carbons;G is a guanidine group of the formula —NH—C(═NH)—NH2; andeach X is independently alkoxy or acyloxy.