26,29 Long Run modifications of this method could include replacing the PVP with polyvinylpolypyrrolidone, which happens to be a remarkably crosslinked type of PVP that's insoluble and might be divided in subsequent cure measures with phenol-centered answers. Alternatively, the PVP could possibly be taken out by using ethanol precipitation from https://www.facebook.com/NewTechFind/posts/pfbid0pfjLiZZdjWuBg3DbfQ9uHAiHX9XRXsDAV3GxU51poEtHG7G597gCf2FVKqEmkxy9l