Five new zwitterionic surfactants with long chain alkyl betaine structure incorporated with hydroxylpropyl group have been synthesized. Their structures were identified by elemental analysis, IR (HNMR)-H-1, and (CNMR)...Five new zwitterionic surfactants with long chain alkyl betaine structure incorporated with hydroxylpropyl group have been synthesized. Their structures were identified by elemental analysis, IR (HNMR)-H-1, and (CNMR)-C-13. Surface tension experiments showed that these surfactants have higher surface activity than those without hydroxypropyl group. The values of CMC and gamma(CMC) of these surfactants have been determined.展开更多
Thermally stable mesoporous silica and Ti-containing molecular sieves have been synthesized at mild temperature using low-cost and biodegradable --- amphoteric tetradecyl betaine as template. The physicochemical chara...Thermally stable mesoporous silica and Ti-containing molecular sieves have been synthesized at mild temperature using low-cost and biodegradable --- amphoteric tetradecyl betaine as template. The physicochemical characterizations proved that Ti(IV) could be incorporated in the mesoporous struture.展开更多
A novel amphoteric surfactants,betaine type phosphate were synthesized from lauryl alcohol,epichlorphydyin,dimethylamine,chlorohydrin,acetic anhydride,phoshorus(V)oxide.The physicochemical properties of the products...A novel amphoteric surfactants,betaine type phosphate were synthesized from lauryl alcohol,epichlorphydyin,dimethylamine,chlorohydrin,acetic anhydride,phoshorus(V)oxide.The physicochemical properties of the products such as surface tension,foaming property,dispersion of calcium soap and solubilizing power were measured.展开更多
文摘Five new zwitterionic surfactants with long chain alkyl betaine structure incorporated with hydroxylpropyl group have been synthesized. Their structures were identified by elemental analysis, IR (HNMR)-H-1, and (CNMR)-C-13. Surface tension experiments showed that these surfactants have higher surface activity than those without hydroxypropyl group. The values of CMC and gamma(CMC) of these surfactants have been determined.
文摘Thermally stable mesoporous silica and Ti-containing molecular sieves have been synthesized at mild temperature using low-cost and biodegradable --- amphoteric tetradecyl betaine as template. The physicochemical characterizations proved that Ti(IV) could be incorporated in the mesoporous struture.
文摘A novel amphoteric surfactants,betaine type phosphate were synthesized from lauryl alcohol,epichlorphydyin,dimethylamine,chlorohydrin,acetic anhydride,phoshorus(V)oxide.The physicochemical properties of the products such as surface tension,foaming property,dispersion of calcium soap and solubilizing power were measured.
