Formation, Polymerization And Application Of Sodium Alkyl Allyl Sulfosuccinic Diesters Ordered Self-assemblies

Ordered self-assemblies of surfactants have been widely and successfully used in the fields of life science, medicine, energy, material science, etc. Unfortunately, the self-assemblies are often formed owing to the interactions of surfactants molecules. The microstructures of aggregates are often changed with environment conditions such as consistence, ion intensity, temperature and so on. Thus, improving the stability of self-assemblies has been a hot topic recently. If polymerizable surfactants are employed to fabricat ordered self-assemblies and these structures are fixed by polymerization, then stability of the ordered self-assemblies will be efficiently improved.A series of novel polymerizable surfactants - Sodium Alkyl Allyl Sulfosuccinic Diesters were designed and synthesized in this work. The structures of all products were determined by IR and ¹HNMR. The surface properties were also tested. This provied new polymerizable surfactants for emulsion and microemulsion polymerization and polymerizable ordered self-assemblies such as polymerized vesicles.Polymerized vesicles were prepared spontaneously from aqueous mixtures of polymerizable surfactant - Sodium Tetradecyl Allyl Sulfosuccinic Diester （STASD） and Cetyl Trimethyl Ammonium Bromide （CTAB）. The stability of the vesicles against salts, ethanol, temperature, and staying time was studied before and after polymerization. Adopting APS as initiator, double bond of the vesicles which polymerized for 1.5 h at 80℃had translated 3.14% by ¹HNMR. The polymerized vesicles could be preserved for eight months and the unpolymerized vesicles for three weeks at normal temperature. It was found that stability of the vesicles was markedly enhanced after polymerization. We firstly applied the polymerized vesicles formed from polymerizable surfactants as drug carriers. The encapsulation efficiency of the polymerized vesicles for aspirin was 15²0% higher than the unpolymerized vesicles. During 50 h , the release ratio the polymerized vesicles was about 79% , but the unpolymerized vesicles was about 29% in simulated intestinal fluid , and the release ratio the polymerized vesicles was about 56%, but the unpolymerized vesicles was about 23% in simulated gastric fluid .Compared with unpolymerized vesicles, the polymerized vesicles have higher encapsulation efficiency and distinctly slow release effects for encapsulated aspirin. All the results lead spontaneous forming of polymerized vesivles and replace liposomes from unspontaneous fabrication as drug carriers.The porous polymers-high oil-absorption resins were prepared by microemulsion polymerization, and the microemulsions come from polymerizable surfactant - Sodium Dodecyl Allyl Sulfosuccinic Diester （SDASD） as emulsioner. the three sub-structures of the micromulsion were determined with conductivity. At the same time, the effect of the weight ratios of MAA to LMA and the quality percentage of SDASD aqueous solution on the phase region was also studied. We also studied the influences of the kinds and ratio of monomer, temperature of polymerization and dosage of crosslinker on oil-absorption rate and absorbing speed of the resin, and the optimum cindtions were obtained. The high oil-absorption resins which were prepared at the optimum cindtions had an excellent effect of oil absorption of 7.9g（gasoline）/g（resin）. It is because polymerizable surfactants were used as emulsioner of microemulsion polymerization that phenomenon of phase separation had decreased and the structures of the resins were easy to control and a new idea came into being for preparation of high oil-absorption resin.Taking SDASD as emulsioner, transparent porous polymers were prepared by ionic liquid instead of water, and with conductivity three microstructure of the single-phase microemulsion as well as area of [bmim] [BF₄] / acrylate （methacrylate / n-butyl）, bicontinuous phase and acrylate / [bmim] [BF₄] were further defined. Effects of sub- structures of the micromulsion, enter of water in bicontinuous phase, dispose method of polymer on structures of hole, and transparence of polymers were also discussed. Then the optimum condtions were obtained by ionic liquid microemulsion polymerization to prepare transparent porous polymers at optimum weight ratios. It is because polymerizanle surfactant and ionic liquid were introduced that phenomenon of phase separation had decreased in microemulsion polymerization and the transparence and porosity of polymers were enhanced. We have obtained great progress in keeping microemulsion with ideal structure brfore polymerization and enriched ways and means of preparation of transparent porous polymers.