{"id":577,"date":"2020-02-10T18:08:02","date_gmt":"2020-02-10T18:08:02","guid":{"rendered":"http:\/\/innovscience.com\/wordpress\/?p=577"},"modified":"2020-02-10T18:08:02","modified_gmt":"2020-02-10T18:08:02","slug":"aqueous-polymerization-of-p-hydroxystyrene-and-related-monomers-2-10-2020","status":"publish","type":"post","link":"https:\/\/innovscience.com\/wordpress\/uncategorized\/aqueous-polymerization-of-p-hydroxystyrene-and-related-monomers-2-10-2020\/","title":{"rendered":"Aqueous Polymerization of p-Hydroxystyrene and Related Monomers, 2\/10\/2020"},"content":{"rendered":"\n<p>Polymers based on <em>p<\/em>-hydroxystyrene (PHOS) are useful in electronics applications;\nhowever, the direct polymerization of this monomer by the cationic technique\ncan be challenging.<sup><a href=\"#_ENREF_1\">1<\/a><\/sup>&nbsp; Our research group has discovered that\nheteropolyacids (HPAs) can effect the cationic polymerization of other olefins\n(e.g., <em>p<\/em>-methoxystyrene (PMOS)) to\nafford high MW polymers in water.&nbsp;\nPhosphotungstic acid is one such acid which is preferred; however, other\nHPAs (e.g., 12-molybdophosphoric acid) can also be used.&nbsp; The heteropolyacid solution is infinitely\nrecyclable as it retains its activity indefinitely.&nbsp; Using this methodology should allow for the\nproduction of poly(<em>p<\/em>-hydroxystyrene)\nas well as the production of copolymers containing this monomer.&nbsp; An example of this approach is embodied in\nScheme 1.<\/p>\n\n\n\n<p>Scheme 1. Aqueous polymerization of <em>p<\/em>-hydroxystyrene and other olefins as\ninduced by heteropolyacids.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"619\" height=\"264\" src=\"http:\/\/innovscience.com\/wordpress\/wp-content\/uploads\/2020\/02\/Scheme-1-Public-Disc-Pyram-Poly_2_10_20.jpg\" alt=\"\" class=\"wp-image-578\" srcset=\"https:\/\/innovscience.com\/wordpress\/wp-content\/uploads\/2020\/02\/Scheme-1-Public-Disc-Pyram-Poly_2_10_20.jpg 619w, https:\/\/innovscience.com\/wordpress\/wp-content\/uploads\/2020\/02\/Scheme-1-Public-Disc-Pyram-Poly_2_10_20-300x128.jpg 300w, https:\/\/innovscience.com\/wordpress\/wp-content\/uploads\/2020\/02\/Scheme-1-Public-Disc-Pyram-Poly_2_10_20-500x213.jpg 500w\" sizes=\"(max-width: 619px) 100vw, 619px\" \/><\/figure>\n\n\n\n<p>References<\/p>\n\n\n\n<p><a>(1) Satoh, H.; Kamigaito, M.; Sawamoto, M. Direct Synthesis of Amphiphilic\nRandom and Block Copolymers of <em>p<\/em>-Hydroxystyrene\nand <em>p<\/em>-Methoxystyrene via Living\nCationic Polymerization with BF<sub>3<\/sub>OEt<sub>2<\/sub>\/ROH Systems <em>Macromolecules <\/em><strong>2000<\/strong>, <em>33<\/em>,5830-5835.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Polymers based on p-hydroxystyrene (PHOS) are useful in electronics applications; however, the direct polymerization of this monomer by the cationic technique can be challenging.1&nbsp; Our research group has discovered that heteropolyacids (HPAs) can effect the cationic polymerization of other olefins &hellip; <a href=\"https:\/\/innovscience.com\/wordpress\/uncategorized\/aqueous-polymerization-of-p-hydroxystyrene-and-related-monomers-2-10-2020\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pb8bvA-9j","_links":{"self":[{"href":"https:\/\/innovscience.com\/wordpress\/wp-json\/wp\/v2\/posts\/577"}],"collection":[{"href":"https:\/\/innovscience.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/innovscience.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/innovscience.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/innovscience.com\/wordpress\/wp-json\/wp\/v2\/comments?post=577"}],"version-history":[{"count":1,"href":"https:\/\/innovscience.com\/wordpress\/wp-json\/wp\/v2\/posts\/577\/revisions"}],"predecessor-version":[{"id":579,"href":"https:\/\/innovscience.com\/wordpress\/wp-json\/wp\/v2\/posts\/577\/revisions\/579"}],"wp:attachment":[{"href":"https:\/\/innovscience.com\/wordpress\/wp-json\/wp\/v2\/media?parent=577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/innovscience.com\/wordpress\/wp-json\/wp\/v2\/categories?post=577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/innovscience.com\/wordpress\/wp-json\/wp\/v2\/tags?post=577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}