Pub Date : 1972-06-01DOI: 10.1002/POL.1972.110100611
T. Fujimura, N. Tamura
{"title":"ESR spectra of radical pairs in irradiated oriented polyethylene","authors":"T. Fujimura, N. Tamura","doi":"10.1002/POL.1972.110100611","DOIUrl":"https://doi.org/10.1002/POL.1972.110100611","url":null,"abstract":"","PeriodicalId":16854,"journal":{"name":"Journal of Polymer Science Part B: Polymer Letters","volume":"72 1","pages":"469-471"},"PeriodicalIF":0.0,"publicationDate":"1972-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74634923","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}
Pub Date : 1972-06-01DOI: 10.1002/POL.1972.110100609
F. Rodriguez
{"title":"Suitability of equations for viscosity correlation over the entire concentration range","authors":"F. Rodriguez","doi":"10.1002/POL.1972.110100609","DOIUrl":"https://doi.org/10.1002/POL.1972.110100609","url":null,"abstract":"","PeriodicalId":16854,"journal":{"name":"Journal of Polymer Science Part B: Polymer Letters","volume":"22 1","pages":"455-459"},"PeriodicalIF":0.0,"publicationDate":"1972-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81533805","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}
Pub Date : 1972-06-01DOI: 10.1002/POL.1972.110100602
L. A. Gugliemelli, W. Doane, C. R. Russell, C. Swanson
Ever since Mino and Kaizerman (1) first reported that cerium(IV) salts initiate graft copolymerization of vinyl monomers on poly(vinyl alcohol), considerable attention has been given to the use of similar systems to graft copolymerize either cellulose or starch. Through kinetic studies various workers (2-5) have shown that cerium(IV) salts bond to alcohols and glycols to form complexes which disproportionate by single electron transfers and subsequently form free radical sites on the reducing agents. More recently, Pottenger and Johnson (6) showed by kinetic studies that cerium(IV) salts in IN acid react with D-glucose and methyII3-D-glucopyranoside, which served as model compounds of cellulose, at 1:5-1:40 cerium(IV) to substrate ratios to form chelate complexes. Graft reactions involving starch are usually conducted at 1:50-1 :200 cerium(IV) to anhydroglucose unit (AGU) ratios in reaction media whose acidities are on the order of O.OIN. Since rate of graft initiation on starch presumably depends on the rate of cerium(IV)-starch complex disproportionation, further knowledge of cerium(IV) complex properties is desirable. Previously, we (7) showed that by rheology we could detect the cationic charge of starch-cerium(IV) complexes made by adding Ce(NH4 h(N03k HN03 reagent to gelatinized dispersions of waxy corn starch (WCS) at 75: 1 AGU to cerium(IV) ratios. Rheology enabled us to follow the influence of HN03 concentration, age of the cerium(IV) reagent, and reaction time on the relative extent of complex formation. However, rheology did not give a quantitative measure of the rate and extent of complexing. Now we have developed a method for isolation and analysis of the complexes and have determined the effect of reaction conditions on extent of complexing. In our method the complexes are precipitated from aqueous solutions with absolute ethyl alcohol and the cerium(IV) content of the precipitate is determined.
自从Mino和Kaizerman(1)首次报道了铈(IV)盐引发乙烯基单体在聚乙烯醇上的接枝共聚以来，人们对使用类似体系接枝共聚纤维素或淀粉的研究得到了相当大的关注。通过动力学研究，各种工作者(2-5)表明，铈(IV)盐与醇和乙二醇结合形成配合物，这种配合物通过单电子转移不成比例，随后在还原剂上形成自由基位点。最近，Pottenger和Johnson(6)通过动力学研究表明，in酸中的铈(IV)盐与d -葡萄糖和甲基iii - d -葡萄糖吡喃苷(作为纤维素的模型化合物)以1:5-1:40的铈(IV)与底物的比例反应形成螯合络合物。涉及淀粉的接枝反应通常以1:50- 1:20 0的铈(IV)与无水葡萄糖单位(AGU)的比例进行，反应介质的酸度为O.OIN。由于在淀粉上接枝的起始速率大概取决于铈(IV)-淀粉络合物歧化的速率，因此进一步了解铈(IV)络合物的性质是可取的。在此之前，我们(7)表明，通过流变学，我们可以检测淀粉-铈(IV)配合物的阳离子电荷，该配合物是在糯玉米淀粉(WCS)的糊化分散体中以75:1 AGU与铈(IV)的比例加入Ce(NH4 h(N03k HN03试剂)制备的。流变学使我们能够跟踪HN03浓度、铈(IV)试剂年龄和反应时间对络合物形成相对程度的影响。然而，流变学并没有给出络合速率和程度的定量测量。现在我们已经开发了一种分离和分析络合物的方法，并确定了反应条件对络合程度的影响。在我们的方法中，配合物是用无水乙醇从水溶液中沉淀出来的，并测定了沉淀中铈(IV)的含量。
{"title":"Starch-cerium(IV) complexes in aqueous media: Formation, isolation, and stability","authors":"L. A. Gugliemelli, W. Doane, C. R. Russell, C. Swanson","doi":"10.1002/POL.1972.110100602","DOIUrl":"https://doi.org/10.1002/POL.1972.110100602","url":null,"abstract":"Ever since Mino and Kaizerman (1) first reported that cerium(IV) salts initiate graft copolymerization of vinyl monomers on poly(vinyl alcohol), considerable attention has been given to the use of similar systems to graft copolymerize either cellulose or starch. Through kinetic studies various workers (2-5) have shown that cerium(IV) salts bond to alcohols and glycols to form complexes which disproportionate by single electron transfers and subsequently form free radical sites on the reducing agents. More recently, Pottenger and Johnson (6) showed by kinetic studies that cerium(IV) salts in IN acid react with D-glucose and methyII3-D-glucopyranoside, which served as model compounds of cellulose, at 1:5-1:40 cerium(IV) to substrate ratios to form chelate complexes. Graft reactions involving starch are usually conducted at 1:50-1 :200 cerium(IV) to anhydroglucose unit (AGU) ratios in reaction media whose acidities are on the order of O.OIN. Since rate of graft initiation on starch presumably depends on the rate of cerium(IV)-starch complex disproportionation, further knowledge of cerium(IV) complex properties is desirable. Previously, we (7) showed that by rheology we could detect the cationic charge of starch-cerium(IV) complexes made by adding Ce(NH4 h(N03k HN03 reagent to gelatinized dispersions of waxy corn starch (WCS) at 75: 1 AGU to cerium(IV) ratios. Rheology enabled us to follow the influence of HN03 concentration, age of the cerium(IV) reagent, and reaction time on the relative extent of complex formation. However, rheology did not give a quantitative measure of the rate and extent of complexing. Now we have developed a method for isolation and analysis of the complexes and have determined the effect of reaction conditions on extent of complexing. In our method the complexes are precipitated from aqueous solutions with absolute ethyl alcohol and the cerium(IV) content of the precipitate is determined.","PeriodicalId":16854,"journal":{"name":"Journal of Polymer Science Part B: Polymer Letters","volume":"37 1","pages":"415-421"},"PeriodicalIF":0.0,"publicationDate":"1972-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73146292","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}
Pub Date : 1972-06-01DOI: 10.1002/POL.1972.110100618
R. Ullman
{"title":"Polymers at interfaces, M. J. Schick, Ed., Interscience Publishers, a Division of John Wiley & Sons, New York, 1971. 310 pp. $14","authors":"R. Ullman","doi":"10.1002/POL.1972.110100618","DOIUrl":"https://doi.org/10.1002/POL.1972.110100618","url":null,"abstract":"","PeriodicalId":16854,"journal":{"name":"Journal of Polymer Science Part B: Polymer Letters","volume":"65 1","pages":"484-484"},"PeriodicalIF":0.0,"publicationDate":"1972-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89122220","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}
Pub Date : 1972-06-01DOI: 10.1002/pol.1972.110100604
V. V. Korshak, S. Vinogradova, V. Vasnev, A. V. Vasil'yev
{"title":"On rotational isomerism of polyarylates","authors":"V. V. Korshak, S. Vinogradova, V. Vasnev, A. V. Vasil'yev","doi":"10.1002/pol.1972.110100604","DOIUrl":"https://doi.org/10.1002/pol.1972.110100604","url":null,"abstract":"","PeriodicalId":16854,"journal":{"name":"Journal of Polymer Science Part B: Polymer Letters","volume":"63 1","pages":"429-431"},"PeriodicalIF":0.0,"publicationDate":"1972-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80734019","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}
Pub Date : 1972-06-01DOI: 10.1002/POL.1972.110100603
Egidio Facioni, E. Martuscelli
{"title":"Solution‐grown single crystals of trans‐polyoctenamer","authors":"Egidio Facioni, E. Martuscelli","doi":"10.1002/POL.1972.110100603","DOIUrl":"https://doi.org/10.1002/POL.1972.110100603","url":null,"abstract":"","PeriodicalId":16854,"journal":{"name":"Journal of Polymer Science Part B: Polymer Letters","volume":"14 1","pages":"423-428"},"PeriodicalIF":0.0,"publicationDate":"1972-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89325391","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}
Pub Date : 1972-06-01DOI: 10.1002/POL.1972.110100601
K. Devries, R. Luntz, M. Williams
{"title":"Effect of torsion on uniaxial bond rupture in monofilament nylon 66","authors":"K. Devries, R. Luntz, M. Williams","doi":"10.1002/POL.1972.110100601","DOIUrl":"https://doi.org/10.1002/POL.1972.110100601","url":null,"abstract":"","PeriodicalId":16854,"journal":{"name":"Journal of Polymer Science Part B: Polymer Letters","volume":"9 1","pages":"409-414"},"PeriodicalIF":0.0,"publicationDate":"1972-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90391389","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}
Pub Date : 1972-06-01DOI: 10.1002/POL.1972.110100620
F. Billmeyer
{"title":"Polymer science and materials, A. V. Tobolsky and H. F. Mark, Eds., Wiley-Interscience, a Division of John Wiley & Sons, New York, 1971. 404 pp. $21.50","authors":"F. Billmeyer","doi":"10.1002/POL.1972.110100620","DOIUrl":"https://doi.org/10.1002/POL.1972.110100620","url":null,"abstract":"","PeriodicalId":16854,"journal":{"name":"Journal of Polymer Science Part B: Polymer Letters","volume":"1 1","pages":"485-486"},"PeriodicalIF":0.0,"publicationDate":"1972-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79394964","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}
Pub Date : 1972-06-01DOI: 10.1002/POL.1972.110100616
N. Gaylord
{"title":"Colloidal and morphological behavior of block and graft copolymers (proceedings of an ACS symposium held at Chicago, Ill., Sept. 13–18, 1970), G. E. Molau, Ed., Plenum Press, New York,1971. 327 + xv pp. $14.50","authors":"N. Gaylord","doi":"10.1002/POL.1972.110100616","DOIUrl":"https://doi.org/10.1002/POL.1972.110100616","url":null,"abstract":"","PeriodicalId":16854,"journal":{"name":"Journal of Polymer Science Part B: Polymer Letters","volume":"47 1","pages":"481-482"},"PeriodicalIF":0.0,"publicationDate":"1972-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75155613","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}
Pub Date : 1972-06-01DOI: 10.1002/POL.1972.110100614
F. Eirich
{"title":"Plastics engineer's data book, A. B. Glanvill, Machinery Publishing, Co., Ltd., London, 1971.","authors":"F. Eirich","doi":"10.1002/POL.1972.110100614","DOIUrl":"https://doi.org/10.1002/POL.1972.110100614","url":null,"abstract":"","PeriodicalId":16854,"journal":{"name":"Journal of Polymer Science Part B: Polymer Letters","volume":"40 1","pages":"479-480"},"PeriodicalIF":0.0,"publicationDate":"1972-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84108480","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}
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