摘要
通过α淀粉／膨润土混合胶液比浓粘度和核磁共振波谱的测定，考察了两者之间的相互作用机理。结果表明，在该混合胶液中，α淀粉大分子可与膨润土胶粒发生氢键缔合，而带负电的膨润土胶粒具有较强的吸附性，使α淀粉大分子链上带有大量电荷，混合脱液表现出聚电解质的粘度行为。α淀粉与膨润土之间的这种互相作用。
The mechanism of the interaction between α starch and bentonite in water was invstigated by means of the viscosity measurement and NMR spectroscopy analysis.The results revealed that the hydrogen bond was formed between the macromolecules of α starch and colloidal particle of bentonite in the mixed colloidal solution,as a result,the betonite micelle with negative charge has strong adsorbability.The macromolecules chain of α starch carries large quantity of electric charge,thus the mixed colloidal solution exhibited viscometric behavior of polyelectrolyte.The interaction between α starch and bentonite will increase the properties of green sand.
出处
《铸造》
CAS
CSCD
北大核心
1997年第9期8-10,共3页
Foundry
