Shape memory polybenzoxazines based on polyetheramine

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• 作者：Yanfang Liu ; ^{liuyanfang@msn.com" class="auth_mail" title="E-mail the corresponding author} ; Jinbai Huang ; Xuehui Su ; Mei Han ; Huan Li ; Mingtao Run ; Hongzan Song ; Yonggang Wu
• 关键词：Shape memory polymer ; Shape memory effect ; Polybenzoxazine ; Polyetheramine ; Ring-opening polymerization
• 刊名：Reactive and Functional Polymers
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：102
• 期：Complete
• 页码：62-69
• 全文大小：1470 K

文摘

Five difunctional benzoxazines were synthesized from polyetheramine, phenol, o-allylphenol, o-cresol, p-cresol, m-cresol, and formaldehyde. The substituent groups decrease the ring-opening polymerization to present the ascending order of meta-, para-, and ortho-positions in comparison to the unsubstituted phenol-based benzoxazines. The dynamic mechanical properties of the resultant polybenzoxazines depend on the structure of the starting phenols. The polybenzoxazines exhibit one-way dual-shape memory behavior in response to changes in temperature, and the shape memory effects are evaluated by tensile stress–strain and bending tests with a temperature programme based on glass transition temperature.