| 研究課題/領域番号 |
19K23617
|
|---|
| 研究機関 | 北海道大学 |
|---|
研究代表者 |
崔 昆朋 北海道大学, 化学反応創成研究拠点, 特任助教 (30843198)
|
|---|
| 研究期間 (年度) |
2019-08-30 – 2021-03-31
|
| キーワード | fatigue resistance / hydrogels / tough / self-healing |
|---|
| 研究実績の概要 |
In the past year, we studied the fatigue behavior of tough and self-healing polyampholyte hydrogels (PA gel) and used small-angle x-ray scattering to record the structure evolution during fatigue loading. We demonstrated that PA gel has a high fatigue resistance, which is achieved through a synergistic effect between different scales. We think the understanding on fatigue mechanism in this work is important for the future application of PA gels and such an anti-fatigue mechanism also provides a design strategy for tough and fatigue-resistant hydrogels, by forming multiscale network structures using noncovalent bonds as building blocks. In addition, this work also gives important hints to understand fatigue-resistant behavior of biotissues with complex hierarchical structures.
|
| 現在までの達成度 (区分) |
現在までの達成度 (区分)
1: 当初の計画以上に進展している
理由
The relatively fast progress is due to the following three reasons.
1) We have prepared the PA gels in advance.
2) We have a specific device for fatigue test of PA gels.
3) We applied the synchrotron radiation beam time in advance.
|
| 今後の研究の推進方策 |
We have studied the structure evolution in the length scale of phase separation structure of PA gels during cyclic loading. In the following year, we will focus on the structure evolution in chain scale and micro scale. We will use mechanical chemistry method to detect chain fracture and particle tracking method measure the local deformation at crack tip.
|
| 次年度使用額が生じた理由 |
Our lab still had some storage of chemicals for synthesizing PA hydrogels before. So we did not spend money to buy chemicals in the past year. In addition, some meetings were cancelled due to the new coronavirus (COVID-19). In this year, more chemicals needs to be brought. Also, in this year, trips on meeting and experiments are also expected to spend the money incurring in the last year.
|
