Effect of methoxy position on dynamic mechanical and shape memory properties of methoxyphenol-based polybenzoxazines. Issue 6 (17th July 2020)

• Record Type: Journal Article
• Authors: Lu, Guosheng; Yang, Huiyun; Zhen, Hecheng; Li, Cuiyun; Shen, Shanshan; Liu, Yanfang; Run, Mingtao
• Is Part Of: International journal of polymer analysis and characterization. Volume 25:Issue 6(2020)
• Page Start: 397
• Page End: 408
• Publication Date: 2020-07-17
• Subjects: Benzoxazine -- methoxyphenol -- polyetheramine -- shape memory effect; Polymers -- Analysis -- Periodicals; 547.705
• DOI: 10.1080/1023666X.2020.1797370
• Languages: English
• ISSNs: 1023-666X

Abstract

Abstract: Two series of benzoxazines were synthesized from o -, m -, and p -methoxyphenols, two polyetheramines with different molecular weights, and formaldehyde. The glass transition temperatures ( T g s) of m -methoxyphenol-based polybenzoxazines are respectively higher than those of o - and p -methoxyphenol-based counterparts. The polybenzoxazines exhibit thermally induced one-way dual-shape memory behavior based on T g, and the o - and p -methoxyphenol-based polybenzoxazines exhibit higher shape memory performance than m -methoxyphenol-based counterparts under motion constraints.