{"title":"Synthesis and properties of 4-vinyl pyridine grafted SBS used as charged mosaic membrane","authors":"G. Hsiue, Z. Yeh","doi":"10.1002/APMC.1987.051530103","DOIUrl":null,"url":null,"abstract":"The grafting of 4-vinyl pyridine onto styrene-butadiene-styrene triblock copolymer by irradiation was studied. Cationic and anionic groups were introduced by sulfonation and methylation to obtain a charged mosaic membrane. \n \n \n \nThe experiments showed an increased rate of grafting with the increase of irradation dose. The best concentration of monomer was at 20%. \n \n \n \nAfter grafting, the contact angle and the water content were tested and morphology studies were performed. \n \n \n \nFurthermore, the tensile strength of this membrane increased with increased percentage of grafting. After testing, the charged mosaic membrane had a reduced potential. Its anionic and cationic exchange capacitites were between 0.12 to 0.13 meq/g, and 0.24 to 0.343 meq/g, respectively. The ratio of exchanged capacity was up to 0.509. KCI and urea can be separated by dialysis. In the determination of a piezodialysis, the salt enrichment reached a percentage of 10.3. \n \n \n \n4-Vinylpyridin wurde durch Bestrahlung auf ein Styrol-Butadien-Styrol-Blockcopolymeres aufgepfropft. Kationische und anionische Gruppen wurden durch Sulfonierung und Methylierung eingefuhrt, wobei eine Membran mit Ladungsmosaik entstand. \n \n \n \nDie Experimente zeigten, das die Pfropfgeschwindigkeit mit der Strahlendosis anstieg. Die gunstigste Monomerkonzentration lag bei 20%. \n \n \n \nNach der Pfropfung wurden der Kontaktwinkel und der Wassergehalt bestimmt sowie Morphologiestudien unternommen. Ferner wurden Zug-Dehnungsuntersuchungen durchgefuhrt sowie das Potential, die Ionenaustauschkapazitaten und das Austauschkapazitatsverhaltnis der Membranen untersucht. KCl und Harnstoff konnen mittels solcher Membranen getrennt, und eine Salzanreicherung in einer Druckdialyse kann erreicht werden.","PeriodicalId":7808,"journal":{"name":"Angewandte Makromolekulare Chemie","volume":"24 1","pages":"33-53"},"PeriodicalIF":0.0000,"publicationDate":"1987-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Angewandte Makromolekulare Chemie","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1002/APMC.1987.051530103","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 6
Abstract
The grafting of 4-vinyl pyridine onto styrene-butadiene-styrene triblock copolymer by irradiation was studied. Cationic and anionic groups were introduced by sulfonation and methylation to obtain a charged mosaic membrane.
The experiments showed an increased rate of grafting with the increase of irradation dose. The best concentration of monomer was at 20%.
After grafting, the contact angle and the water content were tested and morphology studies were performed.
Furthermore, the tensile strength of this membrane increased with increased percentage of grafting. After testing, the charged mosaic membrane had a reduced potential. Its anionic and cationic exchange capacitites were between 0.12 to 0.13 meq/g, and 0.24 to 0.343 meq/g, respectively. The ratio of exchanged capacity was up to 0.509. KCI and urea can be separated by dialysis. In the determination of a piezodialysis, the salt enrichment reached a percentage of 10.3.
4-Vinylpyridin wurde durch Bestrahlung auf ein Styrol-Butadien-Styrol-Blockcopolymeres aufgepfropft. Kationische und anionische Gruppen wurden durch Sulfonierung und Methylierung eingefuhrt, wobei eine Membran mit Ladungsmosaik entstand.
Die Experimente zeigten, das die Pfropfgeschwindigkeit mit der Strahlendosis anstieg. Die gunstigste Monomerkonzentration lag bei 20%.
Nach der Pfropfung wurden der Kontaktwinkel und der Wassergehalt bestimmt sowie Morphologiestudien unternommen. Ferner wurden Zug-Dehnungsuntersuchungen durchgefuhrt sowie das Potential, die Ionenaustauschkapazitaten und das Austauschkapazitatsverhaltnis der Membranen untersucht. KCl und Harnstoff konnen mittels solcher Membranen getrennt, und eine Salzanreicherung in einer Druckdialyse kann erreicht werden.