{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,23]],"date-time":"2025-12-23T10:33:55Z","timestamp":1766486035331,"version":"build-2065373602"},"reference-count":48,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2018,2,8]],"date-time":"2018-02-08T00:00:00Z","timestamp":1518048000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>The development of a highly oriented fiber morphology by effect of tensile deformation of stereodefective isotactic polypropylene (iPP) samples, starting from the unoriented \u03b3 form, is studied by following the transformation in real time during stretching through wide angle X-ray scattering (WAXS) measurements. In the stretching process, after yielding, the initial \u03b3 form transforms into the mesomorphic form of iPP through mechanical melting and re-crystallization. The analysis of the scattering invariant measured in the WAXS region highlights that the size of the mesomorphic domains included in the well oriented fiber morphology obtained at high deformations increases through a process which involves the coalescence of the small fragments formed by effect of tensile stress during lamellar destruction with the domain of higher dimensions.<\/jats:p>","DOI":"10.3390\/polym10020162","type":"journal-article","created":{"date-parts":[[2018,2,9]],"date-time":"2018-02-09T12:46:27Z","timestamp":1518180387000},"page":"162","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":25,"title":["Time-Resolving Study of Stress-Induced Transformations of Isotactic Polypropylene through Wide Angle X-ray Scattering Measurements"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4604-2057","authenticated-orcid":false,"given":"Finizia","family":"Auriemma","sequence":"first","affiliation":[{"name":"Dipartimento di Scienze Chimiche, Universit\u00e0 di Napoli \u201cFederico II\u201d, Complesso Monte Sant\u2019 Angelo, via Cintia, 80126 Napoli, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5375-7475","authenticated-orcid":false,"given":"Claudio","family":"De Rosa","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze Chimiche, Universit\u00e0 di Napoli \u201cFederico II\u201d, Complesso Monte Sant\u2019 Angelo, via Cintia, 80126 Napoli, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8815-2997","authenticated-orcid":false,"given":"Rocco","family":"Di Girolamo","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze Chimiche, Universit\u00e0 di Napoli \u201cFederico II\u201d, Complesso Monte Sant\u2019 Angelo, via Cintia, 80126 Napoli, Italy"}]},{"given":"Anna","family":"Malafronte","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze Chimiche, Universit\u00e0 di Napoli \u201cFederico II\u201d, Complesso Monte Sant\u2019 Angelo, via Cintia, 80126 Napoli, Italy"}]},{"given":"Miriam","family":"Scoti","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze Chimiche, Universit\u00e0 di Napoli \u201cFederico II\u201d, Complesso Monte Sant\u2019 Angelo, via Cintia, 80126 Napoli, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7977-7610","authenticated-orcid":false,"given":"Geoffrey","family":"Mitchell","sequence":"additional","affiliation":[{"name":"CDRSP\u2014Centre for Rapid and Sustainable Product Development, Polytechnic Institute of Leiria, Centro Empresarial da Marinha Grande, 2430-028 Marinha Grande, Portugal"}]},{"given":"Simona","family":"Esposito","sequence":"additional","affiliation":[{"name":"Dipartimento di Scienze Chimiche, Universit\u00e0 di Napoli \u201cFederico II\u201d, Complesso Monte Sant\u2019 Angelo, via Cintia, 80126 Napoli, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2018,2,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"490","DOI":"10.1007\/BF00550305","article-title":"Molecular model of drawing polyethylene and polypropylene","volume":"6","author":"Peterlin","year":"1971","journal-title":"J. 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