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Reactive Polymers最新文献

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Reaction in ion-exchangers: characterization of the ethylenediamine protonation equilibrium in a sulfonic membrane devoted to carbon dioxide facilitated transport 离子交换剂中的反应:用于二氧化碳促进运输的磺酸膜中乙二胺质子化平衡的表征
Reactive Polymers Pub Date : 1995-02-01 DOI: 10.1016/0923-1137(94)00086-K
C. Ahmed , S. Roudesli , M. Métayer , M. Labbé , D. Langevin
{"title":"Reaction in ion-exchangers: characterization of the ethylenediamine protonation equilibrium in a sulfonic membrane devoted to carbon dioxide facilitated transport","authors":"C. Ahmed ,&nbsp;S. Roudesli ,&nbsp;M. Métayer ,&nbsp;M. Labbé ,&nbsp;D. Langevin","doi":"10.1016/0923-1137(94)00086-K","DOIUrl":"10.1016/0923-1137(94)00086-K","url":null,"abstract":"<div><p>A method of characterization of the protonation equilibrium of ethylenediamine (EDA) in a cation-exchange membrane is propounded. This method involves an intermediate reaction of the membrane (initially in the mixed EDAH<sup>+</sup>EDAH<sub>2</sub><sup>2+</sup> form) with gaseous carbon dioxide then the elution and the titration of the carbamic acid formed. This method is more precise and is preferred to the conversion of the sorbed EDAH<sup>+</sup> and EDAH<sub>2</sub><sup>2+</sup> into EDA by sodium hydroxide followed by an acidic titration. The selected method allows to calculate accurately the apparent equilibrium constant K<sup>∗</sup> of the protonation of EDA in the membrane and is very useful to characterize the carrier (EDAH<sup>+</sup>) content of membranes conditioned to achieve facilitated transport of carbon dioxide. The data obtained will be used in an improved analysis of this transport process.</p></div>","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)00086-K","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89201158","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
Thiourea-based coordinating polymers: synthesis and binding to noble metals 硫脲基配位聚合物:合成及其与贵金属的结合
Reactive Polymers Pub Date : 1995-02-01 DOI: 10.1016/0923-1137(94)00082-G
Guangju Zuo, Mamoun Muhammed
{"title":"Thiourea-based coordinating polymers: synthesis and binding to noble metals","authors":"Guangju Zuo,&nbsp;Mamoun Muhammed","doi":"10.1016/0923-1137(94)00082-G","DOIUrl":"10.1016/0923-1137(94)00082-G","url":null,"abstract":"<div><p>The synthesis of several coordinating polymers by grafting thiourea functional groups onto commercial macroporous polystyrene polymer matrices are described. In this paper, we also report the study on the absorption and elution of precious metal ions (or together with base metal ions, Cu<sup>2+</sup> and Fe<sup>3+</sup>) from acidic chloride solutions. The results showed that these resins have appreciable capacity and good selectivity for the absorption of gold from acidic solutions. The extraction kinetics of the resins is slower than the corresponding monomolecular ‘free’ extractant analogues. However, some of the resins show acceptable extraction rates.</p></div>","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)00082-G","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85032548","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: 86
In situ characterization of conducting polymers by measuring dynamic contact angles with Wilhelmy's plate technique 用Wilhelmy板技术测量动态接触角来原位表征导电聚合物
Reactive Polymers Pub Date : 1995-02-01 DOI: 10.1016/0923-1137(95)94036-X
Peter R. Teasdale, Gordon G. Wallace
{"title":"In situ characterization of conducting polymers by measuring dynamic contact angles with Wilhelmy's plate technique","authors":"Peter R. Teasdale,&nbsp;Gordon G. Wallace","doi":"10.1016/0923-1137(95)94036-X","DOIUrl":"10.1016/0923-1137(95)94036-X","url":null,"abstract":"<div><p>Dynamic contact angle analysis with Wilhelmy's plate technique was found to be useful for characterizing the chemical interactions that occur on conducting polymers. The derivatized pyrroles, 3-carboxy-4-methylpyrrole and 3-carbethoxy-4-methylpyrrole, along with pyrrole, were used to prepare polymers with a range of polarities. The predicted trend of polarity, based upon the chemical structures of the polymers, was verified with the technique. It has also been shown that the substrate employed during electropolymerization process plays a major role in determining the properties of the resultant polymer.</p></div>","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(95)94036-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76466691","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: 26
Efficient preparation of polymer-supported enantiopure chiral aminoalcohols via phenolic spacers 通过酚醛间隔剂高效制备聚合物负载的对映纯手性氨基醇
Reactive Polymers Pub Date : 1995-02-01 DOI: 10.1016/0923-1137(94)00083-H
Vincent Levacher , Christina Moberg
{"title":"Efficient preparation of polymer-supported enantiopure chiral aminoalcohols via phenolic spacers","authors":"Vincent Levacher ,&nbsp;Christina Moberg","doi":"10.1016/0923-1137(94)00083-H","DOIUrl":"10.1016/0923-1137(94)00083-H","url":null,"abstract":"<div><p>Derivatives of protected phenols with chiral aminoalcohol or aminoether-containing substituents in the 4-position of the aromatic ring were prepared and shown to react readily, after deprotection, with chloromethylated styrene-divinylbenzene polymers. The chirality in the substituents originated either from the use of a chiral monomeric aminoalcohol derivative or from the introduction of a chiral epoxide, which in turn was ring opened by a chiral amine. The chiral epoxides were obtained by either asymmetric synthesis or starting from a chiral glycidyl derivative.</p></div>","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)00083-H","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79326102","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
Thermal decomposition of polyvinylphenol-fluoride hydrogen bonded complexes 聚乙烯醇-氟化物氢键配合物的热分解
Reactive Polymers Pub Date : 1995-02-01 DOI: 10.1016/0923-1137(94)00081-F
James H. Clark , Andrew J. Felton , Christopher J. Locke , Michael S. White
{"title":"Thermal decomposition of polyvinylphenol-fluoride hydrogen bonded complexes","authors":"James H. Clark ,&nbsp;Andrew J. Felton ,&nbsp;Christopher J. Locke ,&nbsp;Michael S. White","doi":"10.1016/0923-1137(94)00081-F","DOIUrl":"10.1016/0923-1137(94)00081-F","url":null,"abstract":"<div><p>The strongly hydrogen bonded complexes of polyvinylphenol and tetra-alkylammonium fluorides show unusual and unexpected thermal behaviour consistent with the in situ alkylation of the polymer.</p></div>","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)00081-F","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73335032","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: 2
Asymmetric Diels-Alder reaction of cyclopentadiene with methacrolein using polymer-supported chiral catalysts 聚合物负载手性催化剂催化环戊二烯与甲基丙烯的不对称Diels-Alder反应
Reactive Polymers Pub Date : 1995-02-01 DOI: 10.1016/0923-1137(94)00087-L
Shinichi Itsuno, Katsuhiro Watanabe, Takahiro Koizumi, Koichi Ito
{"title":"Asymmetric Diels-Alder reaction of cyclopentadiene with methacrolein using polymer-supported chiral catalysts","authors":"Shinichi Itsuno,&nbsp;Katsuhiro Watanabe,&nbsp;Takahiro Koizumi,&nbsp;Koichi Ito","doi":"10.1016/0923-1137(94)00087-L","DOIUrl":"10.1016/0923-1137(94)00087-L","url":null,"abstract":"<div><p>Polymer-supported chiral Lewis acids were prepared from bromoboranes and crosslinked polymers having chiral amino alcohol or diol moieties. These polymers were used as chiral catalysts for Diels-Alder reactions of cyclopentadiene with methacrolein to give optically active cycloadduct in high chemical yield with high <em>exo</em> selectivity. Optical yield up to 54% ee was obtained by the use of polymeric chiral catalyst derived from (<em>S</em>)-proline. The potential of this type of approach in asymmetric synthesis is discussed.</p></div>","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)00087-L","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87403743","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: 24
Regulation of ion exchange resins for the food, water and beverage industries 食品、水和饮料工业用离子交换树脂的规定
Reactive Polymers Pub Date : 1995-01-01 DOI: 10.1016/0923-1137(94)00077-I
Jay A. Miers Jr.
{"title":"Regulation of ion exchange resins for the food, water and beverage industries","authors":"Jay A. Miers Jr.","doi":"10.1016/0923-1137(94)00077-I","DOIUrl":"10.1016/0923-1137(94)00077-I","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)00077-I","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83452109","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
Regulatory concerns regarding ion exchange resins in pharmaceuticals 药品中离子交换树脂的监管问题
Reactive Polymers Pub Date : 1995-01-01 DOI: 10.1016/0923-1137(94)00076-H
Gerald D. Button
{"title":"Regulatory concerns regarding ion exchange resins in pharmaceuticals","authors":"Gerald D. Button","doi":"10.1016/0923-1137(94)00076-H","DOIUrl":"10.1016/0923-1137(94)00076-H","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)00076-H","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77997172","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: 2
Government regulations on the use of ion exchange resins for the processing of potable water, food products and pharmaceuticals in Japan 日本政府关于在饮用水、食品和药品加工中使用离子交换树脂的规定
Reactive Polymers Pub Date : 1995-01-01 DOI: 10.1016/0923-1137(94)00080-O
Yoichi Utsunomiya
{"title":"Government regulations on the use of ion exchange resins for the processing of potable water, food products and pharmaceuticals in Japan","authors":"Yoichi Utsunomiya","doi":"10.1016/0923-1137(94)00080-O","DOIUrl":"10.1016/0923-1137(94)00080-O","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)00080-O","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82085672","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
Introductory overview 介绍性的概述
Reactive Polymers Pub Date : 1995-01-01 DOI: 10.1016/0923-1137(95)90066-7
Robert Kunin
{"title":"Introductory overview","authors":"Robert Kunin","doi":"10.1016/0923-1137(95)90066-7","DOIUrl":"https://doi.org/10.1016/0923-1137(95)90066-7","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(95)90066-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138219942","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: 0
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