Abstract Polystyrene (PS) is one of the most widely used polymeric materials. However, PS is too brittle to utilize for various applications. Additives are typically added into PS to create stronger PS. PS was successfully strengthened by adding cyclodextrin (CD), which could form inclusion complexes with benzene rings. Acetylated CD (AcCD) and PS were dissolved in toluene to obtain casting film with different contents of AcCD. Interestingly, 3–4 wt% of AcCD increased the fracture energy up to four times. In particular, AcγCD showed better molecular recognition than AcβCD, increasing the Young’s modulus by approximately 160%. Since CD has mainly been used to reinforce soft materials, this report expands the understanding host-guest chemistry of CD and suggests new application.

中文翻译：

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使用环糊精作为添加剂通过主客体相互作用增强聚苯乙烯

摘要 聚苯乙烯（PS）是应用最广泛的高分子材料之一。然而，PS 太脆而无法用于各种应用。添加剂通常添加到 PS 中以创建更强的 PS。通过添加环糊精 (CD) 成功地强化了 PS，它可以与苯环形成包合物。将乙酰化CD（AcCD）和PS溶解在甲苯中，得到不同AcCD含量的流延膜。有趣的是，3-4 wt% 的 AcCD 使断裂能增加了四倍。特别是，AcγCD 显示出比 AcβCD 更好的分子识别，杨氏模量增加了约 160%。由于 CD 主要用于增强软材料，本报告扩展了对 CD 主客体化学的理解，并提出了新的应用。