Chemical Engineering
热水冷冻-解冻法
Hot-Water Freeze–Thaw MethodA simple, green fabrication process utilizing hot-water treatment followed by freeze–thaw cycles to prepare chitin/nano-ZnO composite hydrogels directly from crab shells, reducing chemical usage and environmental impact. / 一种简单、绿色的制备工艺，利用热水处理结合冷冻-解冻循环，直接从蟹壳制备壳聚糖/纳米氧化锌复合水凝胶，减少化学品使用和环境负担。
- Knowledge type
- 工艺技术
- First proposed or discovered
- Proposer
- Turkey Farm member
- Creator
- 农场主
- Last updated
- 2026-11-04 17:05:40
Sub-knowledge points
Chitin extraction from crab shellsNano-ZnO incorporationAntibacterial hydrogel formationLife cycle assessment (LCA)
Higher-order knowledge points
Main parameters and performance indicators
Temperature: 150 °CTime: 3 hLiquid-to-solid ratio: 100:8NaOH concentration: 11%Freeze–thaw cycles: 2 cycles at –25 °C
Open problems
No unresolved problem recorded yet
Related literature
ranked by community starsDirect Fabrication of Chitin-nZnO Antibacterial Hydrogels from Crab Shells via a Hot-Water Freeze–Thaw Method and Associated Life Cycle AssessmentOpen source
Related products and links
Chitin-nZnO antibacterial hydrogel
Creation and modification trail
1 recordsRecord title: Hot-Water Freeze–Thaw Method.
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