A green approach toward epoxy-benzoxazine copolymers with shape-memory ability

Ambrožič, Rok (author), Ručigaj, Aleš (author), Krajnc, Matjaž (author)

In the frame of green-based chemistry, advanced shape memory polymers are designed from benzoxazine (RSBOX) and epoxy (R-EP) resins basing on potential natural raw materials, such as resorcinol and stearylamine. Thermal curing, investigated by differential scanning calorimetry, shows several overlapping peaks suggesting a complex curing mechanism. Dynamic mechanical analysis of cured RS-BOX/R-EP copolymers demonstrates an increase in the glass temperature and narrower glass transition by the increase of the RS-BOX ratio. In contrast, crosslinking density increases with higher epoxy resin content. All investigated materials possess one-way dual shape memory ability triggered by glass transition temperature with excellent shape fixity, while the shape recovery values ranged between 95 and 100%. The duration of the recovery process is significantly influenced by the RS-BOX amount. Additionally, the mechanical and shape memory properties of fully bio-based SMPs might be suitably tailored for advanced applications by merely varying the initial composition.

• Language: English
• Keywords: smart polymers, shape memory materials, bio-benzoxazine, epoxy
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Publication status: Published
• Publication version: Version of Record
• Year: 2020
• Number of pages: Str. 808-822
• Numbering: Vol. 14, no. 9
• PID: 20.500.12556/RUL-117238
• UDC: 678.686-13
• ISSN on article: 1788-618X
• DOI: 10.3144/expresspolymlett.2020.67
• COBISS.SI-ID: 21274883

Copyright

Na spletni strani revije navedeno: "eXPRESS Polymer Letters is an open access journal, both downloading the published articles and publication is free of charge (neither submission charges, nor article processing charges are charged). The users have the right to read, print, search, download, copy, distribute or link to the full texts of these articles, given that they credit the original source, without any alterations or commercial use." (http://www.expresspolymlett.com/index.html?tartalom=scope.php, 2. 7. 2020). V članku navedeno: "© BME-PT".

• Publication date in RUL: 03.07.2020

Record is a part of a journal

• Title: Express polymer letters
• Shortened title: Express polym. lett.
• Publisher: Budapest University of Technology and Economics, Faculty of Mechanical Engineering, Department of Polymer Engineering
• ISSN: 1788-618X
• COBISS.SI-ID: 9369628

Secondary language

• Language: Slovenian
• Keywords: pametni polimeri, materiali z oblikovnim spominom, bio-benzoksazini, epoksidne smole

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0191
• Name: Kemijsko inženirstvo