Self-Healing Hydrogel

Instrument-Free H-bond Visualization

Demonstrates H-bond breaking and re-formation through simple cutting and stretching, requiring no instruments for classroom use.

Xiaojie, Zhang · Chenmin, Zhang · Yanfang, Hao · Xuechang, Song · Xiaohui, Ji · Meng, Xiangfu · Ji, Yanhong

Journal of Chemical Education 2026

Specifications

Correct Identification Rate (Demonstration Group)

{'zh': '91.7', 'en': '91.7'} %

Number of Participating Students

{'zh': '2000', 'en': '2000'}

Advantages

No Instrument Needed

Scissors and manual stretching are sufficient to demonstrate hydrogen bond breaking and re-formation, eliminating the need for expensive equipment.

Effect Doubles

The proportion of students correctly identifying hydrogen bonds is 41.4 percentage points higher than in traditional lectures.

Adaptable to Levels

High school students grasp H-bond formation through autonomous self-healing, while university students connect fundamental chemistry to polymer science.

Applications

• Educational Demonstration Materials：Enables teachers to demonstrate intermolecular forces with ready-made materials, replacing abstract explanations.
• Self-healing Material Education：Uses macroscopic self-healing to build an intuitive understanding of hydrogen bonds.
• Chemistry Visualization Tools：Turns invisible molecular interactions into a tactile classroom experiment.