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 gs) 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.

中文翻译：

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甲氧基位置对甲氧基苯酚基聚苯并恶嗪动态力学和形状记忆性能的影响

摘要 以邻、间、对甲氧基苯酚、两种不同分子量的聚醚胺和甲醛为原料合成了两个系列的苯并恶嗪。基于间甲氧基苯酚的聚苯并恶嗪的玻璃化转变温度 (T gs) 分别高于基于邻甲氧基苯酚和对甲氧基苯酚的对应物。聚苯并恶嗪表现出基于 T g 的热诱导单向双形状记忆行为，并且在运动约束下，基于邻和对甲氧基苯酚的聚苯并恶嗪比基于间甲氧基苯酚的对应物表现出更高的形状记忆性能。