| 可修复水凝胶光子晶体的制备 |
| 点此下载全文 |
| 引用本文：董志强,王校辉,陈功,仇艳菲,陈诚,朱志刚.可修复水凝胶光子晶体的制备[J].上海第二工业大学(中文版),2019,(3):166-170 |
| 摘要点击次数: 683 |
| 全文下载次数: 320 |
|
| 基金项目:国家自然科学基金(61471233, 21504051), 上海市教委曙光计划(14SG52), 上海高校特聘教授(东方学者) 计划, 上海
第二工业大学校基金(EGD19XQD03), 上海第二工业大学研究生项目基金(EGD17YJ003) 资助 |
|
| 中文摘要:采用冷冻- 解冻法制备物理交联聚乙烯醇(PVA) 水凝胶, 在常温下可通过简单贴合实现断口自修复。考察
了不同冷冻时间和解冻时间对自修复后水凝胶断裂拉伸应力的影响, 结果表明, 冷冻时间为24 h, 解冻时间为1 h,
所得水凝胶在自修复后具有最佳机械性能。进一步研究发现, 以PVA 水凝胶为基体包封180 nm 聚苯乙烯(PS) 微
球制备的凝胶光子晶体(PC) 可通过断面涂覆PVA 溶液实现常温自修复, 且PVA PCs 可以制备成任意形状。衍射光
谱表征证明了PVA PCs 能够对外部压力刺激产生响应。 |
| 中文关键词:光子晶体 胶体晶体 水凝胶 自修复 |
| |
| Preparation of Healable Hydrogel Photonic Crystal |
|
|
| Abstract:A physically cross-linked poly(vinyl alcohol) (PVA) hydrogel was prepared by freezing-thawing method. Such hydrogel can
realize self-healing at room temperature through simple lamination. The effects of different freezing time and thawing time on tensile
strength of self-healed hydrogels were investigated. The results show that the hydrogels prepared through freezing for 24 h and thawing
for 1 h have the best mechanical properties after self-healing. Further studies show that the PVA hydrogel-based gelated photonic crystal
(PVA PC) with 180 nm polystyrene (PS) nanospheres can self-heal at room temperature by coating PVA solution on the interfaces, and
the PVA PCs can be shaped as needed. The diffraction spectra show that the PVA PCs can respond to external pressure stimuli. |
| keywords:photonic crystal colloidal crystal hydrogel self-healing |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|