ǂA ǂgreen approach toward epoxy-benzoxazine copolymers with shape-memory ability

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

Abstract

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.

Keywords

pametni polimeri;materiali z oblikovnim spominom;bio-benzoksazini;epoksidne smole;smart polymers;shape memory materials;bio-benzoxazine;epoxy;

Data

Language:	English
Year of publishing:	2020
Typology:	1.01 - Original Scientific Article
Organization:	UL FKKT - Faculty of Chemistry and Chemical Technology
UDC:	678.686-13
COBISS:	21274883
ISSN:	1788-618X
Views:	638
Downloads:	310
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	pametni polimeri;materiali z oblikovnim spominom;bio-benzoksazini;epoksidne smole;
Type (COBISS):	Article
Source comment:	Avtorskopravni vidik članka: "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".
Pages:	str. 808-822
Volume:	ǂVol. ǂ14
Issue:	ǂno. ǂ9
Chronology:	Sep. 2020
DOI:	10.3144/expresspolymlett.2020.67
ID:	11880828