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Reactive Polymers最新文献

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The use of ion exchange and polymeric resins in pharmaceutical applications in Europe 离子交换和聚合树脂在欧洲制药领域的应用
Reactive Polymers Pub Date : 1995-01-01 DOI: 10.1016/0923-1137(94)00079-K
S.A. Bellamy
{"title":"The use of ion exchange and polymeric resins in pharmaceutical applications in Europe","authors":"S.A. Bellamy","doi":"10.1016/0923-1137(94)00079-K","DOIUrl":"10.1016/0923-1137(94)00079-K","url":null,"abstract":"","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)00079-K","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87033735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Ion exchange resins used in the food industry and in the drinking water preparation in Europe 离子交换树脂用于食品工业和欧洲的饮用水制备
Reactive Polymers Pub Date : 1995-01-01 DOI: 10.1016/0923-1137(94)00078-J
J.M. Cuvelier
{"title":"Ion exchange resins used in the food industry and in the drinking water preparation in Europe","authors":"J.M. Cuvelier","doi":"10.1016/0923-1137(94)00078-J","DOIUrl":"10.1016/0923-1137(94)00078-J","url":null,"abstract":"","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)00078-J","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76325119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
The comparison of theophylline permeabilities from hydrophilic polyhydroxyethylmethacrylate and hydrophobic polyurethane, polyvinylchloride membranes 亲水性聚甲基丙烯酸羟乙酯与疏水性聚氨酯、聚氯乙烯膜茶碱渗透性的比较
Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90137-6
M. Pulat
{"title":"The comparison of theophylline permeabilities from hydrophilic polyhydroxyethylmethacrylate and hydrophobic polyurethane, polyvinylchloride membranes","authors":"M. Pulat","doi":"10.1016/0923-1137(94)90137-6","DOIUrl":"10.1016/0923-1137(94)90137-6","url":null,"abstract":"<div><p>In this study, the diffusion characteristics of theophylline through polyurethane (PU), polyvinylchloride (PVC) and polyhydroxyethylmethacrylate (PHEMA) membranes were investigated for their usage as oral controlled-release reservoir systems. PU and PVC membranes were prepared by the solvent-casting method and PHEMA membrane was prepared by bulk polymerization of 2-hydroxyethylmethacrylate in different thicknesses. Diffusion measurements were performed in simulated gastric fluid and simulated intestinal fluid during 10 h at 37°C using a diffusion cell. Permeability coefficients calculated from diffusion experiments were found to be approximately 10 times higher in PHEMA than PU and PVC membranes.</p></div>","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)90137-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79073548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Protein adsorption on functional hydrophilic polymer beads: role of structural properties and medium conditions 蛋白质在功能性亲水性聚合物珠上的吸附:结构性质和介质条件的作用
Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90135-X
E. Gök, M. Kiremitçi, I. Ateş
{"title":"Protein adsorption on functional hydrophilic polymer beads: role of structural properties and medium conditions","authors":"E. Gök, M. Kiremitçi, I. Ateş","doi":"10.1016/0923-1137(94)90135-X","DOIUrl":"https://doi.org/10.1016/0923-1137(94)90135-X","url":null,"abstract":"","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84801102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Synergistic complexation of metal ions with bifunctional interpenetrating polymer networks 金属离子与双功能互穿聚合物网络的协同络合作用
Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90134-1
A. Kriger, B. Moyer, S. Alexandratos
{"title":"Synergistic complexation of metal ions with bifunctional interpenetrating polymer networks","authors":"A. Kriger, B. Moyer, S. Alexandratos","doi":"10.1016/0923-1137(94)90134-1","DOIUrl":"https://doi.org/10.1016/0923-1137(94)90134-1","url":null,"abstract":"","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84512766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Catalytic hydrogenation over platinum complexes with poly(vinylpyridine)s 铂与聚乙烯吡啶配合物的催化加氢反应
Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90132-5
A. Zharmagambetova, S. Mukhamedzhanova, B. Dusenbina
{"title":"Catalytic hydrogenation over platinum complexes with poly(vinylpyridine)s","authors":"A. Zharmagambetova,&nbsp;S. Mukhamedzhanova,&nbsp;B. Dusenbina","doi":"10.1016/0923-1137(94)90132-5","DOIUrl":"10.1016/0923-1137(94)90132-5","url":null,"abstract":"<div><p>Platinum complexes with poly(vinylpyridine) ligands have been studied as catalysts in the reaction of nitrobenzene and 2-propen-1-ol hydrogenation. Pretreatment of the complexes with NaBH<sub>4</sub> causes the reduction of part of platinum into lower valent states (XPS data) and a decrease of catalytic activity of polymer-metal complexes. The structure of polymer ligands and the position of substituents on the pyridine ring of poly(vinylpyridine) have been shown to affect properties of obtained catalysts. A platinum complex with poly(2-methyl-5-vinylpyridine) was active in hydrogenation reaction.</p></div>","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)90132-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85941019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Synthesis and photochemical properties of insoluble poly(styrene) beads containing pendant norbornadiene moieties 含降冰片二烯不溶性聚苯乙烯珠的合成及光化学性质
Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90138-4
Tadatomi Nishikubo, Atsushi Kameyama, Katsuhiko Kishi, Chikara Hijikata
{"title":"Synthesis and photochemical properties of insoluble poly(styrene) beads containing pendant norbornadiene moieties","authors":"Tadatomi Nishikubo,&nbsp;Atsushi Kameyama,&nbsp;Katsuhiko Kishi,&nbsp;Chikara Hijikata","doi":"10.1016/0923-1137(94)90138-4","DOIUrl":"https://doi.org/10.1016/0923-1137(94)90138-4","url":null,"abstract":"<div><p>Insoluble polymer beads bearing pendant norbornadiene (NBD) moieties were synthesized by the substitution reaction of insoluble chloromethylated poly(styrene) beads with potassium salts of certain NBD derivatives having carboxylic acid or phenol groups using a phase transfer catalyst. The reaction proceeded smoothly in high conversions in DMF at 90°C for 72 h to give the corresponding insoluble polymer beads bearing NBD moieties. Rates of photochemical reaction of the obtained insoluble polymer beads were measured by IR spectrometry using KBr disk plates. The photochemical valence isomerization from 3-phehyl-2,5-NBD-2-carboxylate (PNCA) moiety to the corresponding quadricyclane (QC) group and catalytic reversion from QC to the NBD moiety were also examined in dichloromethane, and it was found that the photochemical valence isomerization and the catalytic reversion in insoluble polymer beads can be recycled in high conversions at last for 10 runs.</p></div>","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)90138-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91766297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Polystyrene-supported ammonium fluoride as a catalyst for several base-catalyzed reactions 聚苯乙烯负载氟化铵作为几种碱催化反应的催化剂
Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90139-2
Noritaka Ohtani, Yukihiko Inoue, Akira Nomoto, Shigeyuki Ohta
{"title":"Polystyrene-supported ammonium fluoride as a catalyst for several base-catalyzed reactions","authors":"Noritaka Ohtani,&nbsp;Yukihiko Inoue,&nbsp;Akira Nomoto,&nbsp;Shigeyuki Ohta","doi":"10.1016/0923-1137(94)90139-2","DOIUrl":"https://doi.org/10.1016/0923-1137(94)90139-2","url":null,"abstract":"<div><p>Lightly crosslinked polystyrenes with ammonium chlorides were ion-exchanged to a fluoride form. The fluoride polymers functioned as good catalysts for several base-catalyzed reactions, such as cyanoethylation, Knoevenagel reaction, Claisen condensation and Michael addition. Their catalytic activity was comparable to that of tetrabutylammonium fluoride (TBAF). The factors controlling the catalytic efficiency for the reaction between ethyl acetoacetate and benzaldehyde were examined in detail. Ionic loading and ammonio structure of the fluoride polymers hardly affected the catalytic efficiency. The reaction was fast in a non-polar solvent, such as octane or toluene. The solvent effect was very similar to that of nucleophilic substitution reactions. These results suggest that the rate-determining step of the base-catalyzed reaction is not the formation of a conjugate base from the reagent acid, but the attack of the nucleophilic anion on electrophiles.</p></div>","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)90139-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91766299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Hydrogenation catalysts based on palladium complexes with poly(vinylpyridine) 钯-聚乙烯基吡啶配合物加氢催化剂
Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90131-7
Alima K. Zharmagambetova , Sabira G. Mukhamedzhanova , Esen A. Bekturov
{"title":"Hydrogenation catalysts based on palladium complexes with poly(vinylpyridine)","authors":"Alima K. Zharmagambetova ,&nbsp;Sabira G. Mukhamedzhanova ,&nbsp;Esen A. Bekturov","doi":"10.1016/0923-1137(94)90131-7","DOIUrl":"https://doi.org/10.1016/0923-1137(94)90131-7","url":null,"abstract":"<div><p>The conditions for the preparation of catalysts based on the interaction of PdCl<sub>2</sub> with poly(vinylpyridine) were studied. The activity of polymer-metal complexes in hydrogenation can be considerably changed by variation in temperature, initial ratio of PdCl<sub>2</sub> and polymer in solution, and contact time of the resulting complexes with the initial solution. The complex, prepared at 25°C from ethanolic solutions of poly(2-vinylpyridine) and PdCl<sub>2</sub> (molar ratio polymer: Pd = 1:1), and kept in the initial solution for 3 days, was found to be an active catalyst for hydrogenation. The reduction of this complex with NaBH<sub>4</sub> leads to an increase in its catalytic activity.</p></div>","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)90131-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91775873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Sorption of unconjugated bilirubin by means of novel immobilized β-cyclodextrin polymers 新型固定化β-环糊精聚合物对非共轭胆红素的吸附
Reactive Polymers Pub Date : 1994-11-01 DOI: 10.1016/0923-1137(94)90129-5
Xiao-Bin Zhao, Bing-Lin He, (Ping-Lum Ho)
{"title":"Sorption of unconjugated bilirubin by means of novel immobilized β-cyclodextrin polymers","authors":"Xiao-Bin Zhao,&nbsp;Bing-Lin He,&nbsp;(Ping-Lum Ho)","doi":"10.1016/0923-1137(94)90129-5","DOIUrl":"https://doi.org/10.1016/0923-1137(94)90129-5","url":null,"abstract":"<div><p>Three kinds of novel β-cyclodextrin (β-CyD) polymers were synthesized by immobilization of β-CyD onto the crosslinked polystyrene supports with different functional groups such as CH<sub>2</sub>Cl, SO<sub>2</sub>Cl and <figure><img></figure>. biomedical adsorbents, they were tested for their removal capacity of unconjugated bilirubin (BR). The results indicate that the adsorption capacity for BR is due to the inclusion interaction between β-CyD and BR. Many factors such as the adsorption time, the pH value of the adsorption medium, the concentrations of BR and albumin, the amount of β-CyD immobilized on the supports and the degree of crosslinking may affect the adsorption capacity. The adsorption mechanism was also studied.</p></div>","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)90129-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91766293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
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