{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,15]],"date-time":"2025-10-15T17:24:55Z","timestamp":1760549095603},"reference-count":9,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2011,3,4]],"date-time":"2011-03-04T00:00:00Z","timestamp":1299196800000},"content-version":"vor","delay-in-days":4779,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Macromolecular Symposia"],"published-print":{"date-parts":[[1998,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The present work is aimed at studying the reactivity of \u03b1\u2010 and \u03b2\u2010pinenes in radical polymerization. The pinene homopolymers obtained were oligomers, showing both isomers similar reactivities. In order to achieve products of higher molecular weight, the radical copolymerization of \u03b1\u2010 and \u03b2\u2010pinene with methyl methacrylate and styrene was performed, giving rise to polymers with M\u0304<jats:sub>w<\/jats:sub> varying from 11 500 to 53 000. In radical copolymerization \u03b1\u2010pinene showed to be more reactive than \u03b2\u2010pinene. All the radical reactions performed were carried out with a Ziegler\u2010Natta catalyst, TiCl<jats:sub>4<\/jats:sub>\/Et<jats:sub>3<\/jats:sub>Al, and with Et<jats:sub>3<\/jats:sub>Al. Under the conditions tested, \u03b2\u2010pinene did not undergo any polymerization reaction and the cocatalyst showed a pronounced catalytic effect. The coordination polymers obtained at 5 h had chain lenghts of the same order of magnitude of the corresponding radical copolymers obtained at 50 h, although for much lower overall conversion.<\/jats:p>","DOI":"10.1002\/masy.19981270109","type":"journal-article","created":{"date-parts":[[2011,3,7]],"date-time":"2011-03-07T15:00:07Z","timestamp":1299510007000},"page":"43-50","source":"Crossref","is-referenced-by-count":12,"title":["Polymers from pine gum components: Radical and coordination homo and copolymerization of pinenes"],"prefix":"10.1002","volume":"127","author":[{"given":"Ana Maria","family":"Ramos","sequence":"first","affiliation":[]},{"given":"Lu\u00eds S.","family":"Lobo","sequence":"additional","affiliation":[]},{"given":"Jo\u00e3o M.","family":"Bordado","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2011,3,4]]},"reference":[{"key":"e_1_2_1_2_2","first-page":"510","volume-title":"Naval Stores Production, Chemistry, Utilisation","author":"Ruckel E. R.","year":"1989"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.1080\/00222338508063364"},{"issue":"8","key":"e_1_2_1_4_2","first-page":"995","volume":"33","author":"Deng Y.","year":"1996","journal-title":"J. Macrom. Chem.\u2010Pure Appl. Chem."},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1021\/ma9610976"},{"key":"e_1_2_1_6_2","doi-asserted-by":"publisher","DOI":"10.1021\/ma960118t"},{"key":"e_1_2_1_7_2","first-page":"706","volume-title":"Comprehensive Polymer Science","author":"Kennedy J. P.","year":"1989"},{"key":"e_1_2_1_8_2","doi-asserted-by":"publisher","DOI":"10.1080\/00222338508063364"},{"issue":"2","key":"e_1_2_1_9_2","first-page":"135","volume":"28","author":"Yousafzai A. K.","year":"1985","journal-title":"Pak. J. Sci. Ind. Res."},{"key":"e_1_2_1_10_2","doi-asserted-by":"publisher","DOI":"10.1002\/pol.1965.100030309"}],"container-title":["Macromolecular Symposia"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fmasy.19981270109","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fmasy.19981270109","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/masy.19981270109","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,27]],"date-time":"2023-10-27T23:48:14Z","timestamp":1698450494000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/masy.19981270109"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1998,2]]},"references-count":9,"journal-issue":{"issue":"1","published-print":{"date-parts":[[1998,2]]}},"alternative-id":["10.1002\/masy.19981270109"],"URL":"https:\/\/doi.org\/10.1002\/masy.19981270109","archive":["Portico"],"relation":{},"ISSN":["1022-1360","1521-3900"],"issn-type":[{"value":"1022-1360","type":"print"},{"value":"1521-3900","type":"electronic"}],"subject":[],"published":{"date-parts":[[1998,2]]}}}