| 溶剂辅助强化水凝胶光子晶体的衍射性能 |
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| 引用本文：吴慕哲,陈诚.溶剂辅助强化水凝胶光子晶体的衍射性能[J].上海第二工业大学(中文版),2024,41(4):375-379 |
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| 中文摘要:采用沸腾聚合法制备单分散聚苯乙烯乳液, 将其通过静电力自组装得到胶体光子晶体阵列(colloidal crystal array, CCA), 将CCA 与聚乙烯醇(polyvinyl alcohol, PVA) 机械搅拌混合, 通过冷冻-解冻法得到凝胶化胶体阵列(gelated colloidal crystal array, GCCA)。由于PVA 机械性能较差, 因此物理凝胶过程中采用辅助溶剂法, 使用乙二醇(ethylene glycol, EG) 作为溶剂, 显著提升了GCCA 的抗拉性能。考察了GCCA 在不同拉伸长度下光学性能的变化,结果表明, 随着拉伸长度的增加, GCCA 的衍射波长也随之增大并且具有良好的线性关系, 证明GCCA 对于外界拉应力可以在可见光波长范围内产生响应。 |
| 中文关键词:光子晶体 水凝胶 制备 |
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| Diffraction Properties of Solvent-Assisted Reinforced Hydrogel Photonic Crystal |
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| Abstract:Monodisperse polystyrene latex was synthesized by boiling polymerization, and colloidal crystal array (CCA) was obtained by electrostatic self-assembly of polystyrene. The CCA and polyvinyl alcohol (PVA) was mechanically mixed and frozen-thawed into gelated colloidal crystal array (GCCA). Due to the poor mechanical properties of PVA, the solvent-assistant method was used in the physical gelation process, and ethylene glycol (EG) was used as the assistant solvent, which significantly improved the tensile properties of the GCCA. The changes in optical properties of GCCA were investigated under different stretching conditions, and the results show that the diffraction wavelength of GCCA increases as the stretching length increases. The certain linear relationship proves that GCCA can respond to external tensile stress within the visible light wavelength range. |
| keywords:photonic crystals hydrogel preparation |
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