Process for preparing, purifying and testing medical hydrogel of polyacrylamide
A process for preparing the hydrogel of polyacrylamide and testing its purity includes adding purity indicating agent, mixing with acrylamide, cross-linking agent and promoter solution, filtering, adding initiator and secondary distilled water, still standing for 0.5-1 hr to obtain said hydrogel, st...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A process for preparing the hydrogel of polyacrylamide and testing its purity includes adding purity indicating agent, mixing with acrylamide, cross-linking agent and promoter solution, filtering, adding initiator and secondary distilled water, still standing for 0.5-1 hr to obtain said hydrogel, stirring for breaking it, leaching in secondary distilled water several times, and detecting the presence of chlorine ions in extracted liquid to indirctly calculate the content of residual acrylamide monomer in said hydrogel. Its advantages are simple operation, low cost and high quality of product. |
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