Angewandte Makromolekulare Chemie最新文献

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Spectroscopic study of gangue of coal and its application as filler in PVC compounds 煤矸石的光谱研究及其在PVC料中的应用
Angewandte Makromolekulare Chemie Pub Date : 1987-08-01 DOI: 10.1002/APMC.1987.051530106
G. Xue, Qiang Fu, Jianfu Ding, S. Jiang, Shiying Liu, Y. Xi
{"title":"Spectroscopic study of gangue of coal and its application as filler in PVC compounds","authors":"G. Xue, Qiang Fu, Jianfu Ding, S. Jiang, Shiying Liu, Y. Xi","doi":"10.1002/APMC.1987.051530106","DOIUrl":"https://doi.org/10.1002/APMC.1987.051530106","url":null,"abstract":"Fillers for PVC compounds have been made from coal gangue. FT-IR studies show that it contains aromatic components with phenolic groups. Application of gangue as a filler in rigid PVC compounds gives rise to materials of good mechanical properties, high heating and chemical resistance, and lower cost. \u0000 \u0000 \u0000 \u0000Aus Kohlegangen wurde Fullmaterial fur PVC-Compounds hergestellt. FT-IR Untersuchungen zeigen, das diese Gange aromatische Komponenten mit phenolischen Gruppen enthalten. Die Verwendung der Gange als Fullstoff in Hart-PVC-Compounds fuhrt zu Materialien mit guten mechanischen Eigenschaften, hoher Hitzeund chemischer Bestandigkeit und niedrigen Kosten.","PeriodicalId":7808,"journal":{"name":"Angewandte Makromolekulare Chemie","volume":"18 1","pages":"89-94"},"PeriodicalIF":0.0,"publicationDate":"1987-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77262568","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: 1
Styrene‐divinylbenzene copolymers, V. Inhomogeneity in the structure and the average degree of swelling 苯乙烯-二乙烯基苯共聚物,V.结构的不均匀性和平均膨胀度
Angewandte Makromolekulare Chemie Pub Date : 1987-08-01 DOI: 10.1002/APMC.1987.051530109
O. Okay
{"title":"Styrene‐divinylbenzene copolymers, V. Inhomogeneity in the structure and the average degree of swelling","authors":"O. Okay","doi":"10.1002/APMC.1987.051530109","DOIUrl":"https://doi.org/10.1002/APMC.1987.051530109","url":null,"abstract":"The compositional inhomogeneity and the average degree of swelling of heterogeneous styrene-divinylbenzene (S-DVB) copolymers were investigated using two morphological features of porous copolymers. At a fixed volume fraction of a nonsolvating diluent, the extent of inhomogeneous crosslinking increases with increasing DVB concentration. In addition, the crosslinking density of less crosslinked regions of the network decreases as the DVB concentration increases. The experimental results can be explained by the microgel-model of the network formation. The average degree of volume swelling can be predicted from the composition of the starting monomer mixture and from the porosity of the final copolymer dried from water. Depending on these parameters, the changes in the value of v2, the volume fraction of copolymer in the swollen gel, and the conditions for the pore stability are discussed. \u0000 \u0000 \u0000 \u0000Die Inhomogenitat in der Zusammensetzung und der mittlere Quellungsgrad von heterogenen Styrol-Divinylbenzol-Copolymeren (S-DVB) wurden mit Hilfe von zwei morphologischen Eigenschaften der porosen Copolymeren untersucht. Fur einen bestimmten Volumenbruch eines nicht-solvatisierenden Verdunnungsmittels steigt die Inhomogenitat mit zunehmender DVB-Konzentration an. Auserdem nimmt die Vernetzungsdichte der schwach vernetzten Bereiche des Netzwerkes mit zunehmender DVB-Konzentration ab. Die experimentellen Ergebnisse werden durch das Mikrogel-Modell fur die Netzwerk-Bildung erklart. Der mittlere Volumenquellungsgrad kann aus der Zusammensetzung des anfanglichen Monomerengemisches und aus der Porositat des getrockneten Copolymeren vorhergesagt werden. Die anderungen in v2, dem Volumenbruch des Polymeren im gequollenen Gel, und die Bedingungen fur die Poren-Stabilitat werden in Abhangigkeit von diesen Parametern diskutiert.","PeriodicalId":7808,"journal":{"name":"Angewandte Makromolekulare Chemie","volume":"17 1","pages":"125-134"},"PeriodicalIF":0.0,"publicationDate":"1987-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76136650","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: 20
Synthesis and properties of polyamine‐imides containing phenoxaphosphine units 含苯氧膦多胺亚胺的合成及性能研究
Angewandte Makromolekulare Chemie Pub Date : 1987-08-01 DOI: 10.1002/APMC.1987.051530107
P. Subramaniam, M. Srinivasan
{"title":"Synthesis and properties of polyamine‐imides containing phenoxaphosphine units","authors":"P. Subramaniam, M. Srinivasan","doi":"10.1002/APMC.1987.051530107","DOIUrl":"https://doi.org/10.1002/APMC.1987.051530107","url":null,"abstract":"Polyamine-imides were synthesized by polycondensation reaction of bis-N-methyl-olimides and diamines. The reactions were carried out in the aprotic polar solvent dimethylacetamide (DMAc) and polymers with inherent viscosities ranging between 0.36–0.75 dl/g were obtained. The polymers were degraded by conc. H2SO4. All the polymers were characterized by elemental analysis, IR- and 1H-NMR spectroscopy, density, solubility, crystallinity, and thermal analysis. \u0000 \u0000 \u0000 \u0000Polyaminimide wurden durch Polykondensation von Bis-N-methylolimiden und Diaminen hergestellt. Die Reaktionen wurden in dem aprotischen Losungsmittel Dimethylacetamid (DMAc) durchgefuhrt, wodurch Polymere mit inherenten Viskositaten von 0,36–0,75 dl/g erhalten wurden. Die Polymeren wurden mit konz. H2SO4 abgebaut. Alle Polymere wurden durch Elementaranalyse, IR- und 1H-NMR-Spektroskopie, Dichte, Loslichkeit, Kristallinitat und durch Thermoanalyse charakterisiert.","PeriodicalId":7808,"journal":{"name":"Angewandte Makromolekulare Chemie","volume":"2 1","pages":"95-111"},"PeriodicalIF":0.0,"publicationDate":"1987-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85532399","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
Properties of the polyacrylic acid resin duolite es 346 containing amidoxime anchor groups with respect to the separation of uranium from sea water 含偕胺肟锚基的聚丙烯酸树脂双沸石346对海水中铀的分离性能
Angewandte Makromolekulare Chemie Pub Date : 1987-07-01 DOI: 10.1002/APMC.1987.051520115
K. Lieser, M. Erboy, B. Thybusch
{"title":"Properties of the polyacrylic acid resin duolite es 346 containing amidoxime anchor groups with respect to the separation of uranium from sea water","authors":"K. Lieser, M. Erboy, B. Thybusch","doi":"10.1002/APMC.1987.051520115","DOIUrl":"https://doi.org/10.1002/APMC.1987.051520115","url":null,"abstract":"Loading curves, rate of exchange and distribution coefficients of Duolite ES 346 are determined for UO22+, Cu2+ and Fe3+, using simulated sea water. The crude resin gives off ammonia into solution which leads to precipitation of uranyl ions and high apparent distribution coefficients. With the purified resin the following distribution coefficients are measured at pH 8.1: Kd(UO22+) ≈ Kd(Cu2+) ≈ Kd(Fe3+) ≈ 0.6 · 104 ml/g. This leads to a loading of the resin in sea water of pH 8.1 with uranium only to about 20 μg per g of resin. \u0000 \u0000 \u0000 \u0000Die Beladungskurven, die Austauschgeschwindigkeit und die Verteilungskoeffizienten von Duolit ES 346 wurden unter Verwendung von simuliertem Meerwasser fur UO22+, Cu2+ und Fe3+ bestimmt. Das rohe Harz gibt Ammoniak in die Losung ab, was zur Ausfallung von Uranylionen und scheinbar hohen Verteilungskoeffizienten fuhrt. Fur das gereinigte Harz wurden die folgenden Verteilungskoeffizienten bei pH 8,1 gemessen: Kd(UO22+) ≈ Kd(Cu2+) ≈ Kd(Fe3+) ≈ 0,6 · 104 ml/g. Dies fuhrt zu einer Beladung des Harzes in Meerwasser vom pH 8,1 mit Uran bis etwa 20 μg pro g Harz.","PeriodicalId":7808,"journal":{"name":"Angewandte Makromolekulare Chemie","volume":"89 1","pages":"169-178"},"PeriodicalIF":0.0,"publicationDate":"1987-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83548810","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: 9
Sorbents prepared from a composite reactive carrier based on bead cellulose and poly(ethylenemethacrylate‐toluenesulfonate) 以纤维素和聚丙烯酸乙酯-甲苯磺酸为基础的复合反应载体制备吸附剂
Angewandte Makromolekulare Chemie Pub Date : 1987-07-01 DOI: 10.1002/APMC.1987.051520116
J. Lenfeld, J. Štamberg
{"title":"Sorbents prepared from a composite reactive carrier based on bead cellulose and poly(ethylenemethacrylate‐toluenesulfonate)","authors":"J. Lenfeld, J. Štamberg","doi":"10.1002/APMC.1987.051520116","DOIUrl":"https://doi.org/10.1002/APMC.1987.051520116","url":null,"abstract":"A composite reactive carrier consisting of bead cellulose and poly(ethylenemethacrylate-toluenesulfonate) was modified by reactions with sodium sulfite, dimethylaminoethanol, polyethyleneimine, thiourea (followed by hydrolysis with KOH), phenol, and pyrogallol (followed by mercuration with mercury(II) acetate (CH3COO)2Hg) to functional sorbents containing sulfonic, quaternary ammonium, imine, thiol, and Hg+ ion exchange groups. The modification is accompanied by a hydrolytic splitting-off of the reactive tosyl group. The hydrolysis is supported by the presence of water in the reaction medium and its degree increases with the reaction temperature. The highest conversion was reached in the formation of the thiol sorbent. Its sorption properties were investigated by the sorption of Ag+ ions. The observed high rate of sorption is a consequence of the hydrophilizing effect of the cellulose component of the composite sorbent. \u0000 \u0000 \u0000 \u0000Ein reaktiver Trager vom Composite-Typ, bestehend aus Cellulose-Perlen und Polyethylenmethacrylat toluolsulfonat wurde durch Reaktion mit Na-Sulfit, mit Dimethylaminoethanol, mit Polyethylenimin, mit Thioharnstoff (und anschliesende Hydrolyse mit KOH), mit Phenol und Pyrogallol (und anschliesende Reaktion mit Quecksilberacetat) modifiziert. Die so hergestellten Trager enthalten folgende funktionelle Gruppen: Sulfonsaure-, quaternare Ammonium-, Imin-, Mercaptan- und Qecksilberacetat-Gruppen (letztere uber Phenol- bzw. Pyrogallolether gebunden). Die Reaktion verlaft unter hydrolytischer Abspaltung der reaktiven Toluolsulfonylgruppe. Der Hydrolyseumsatz steigt mit der Wasserkonzentration des Reaktionsmediums und mit der Temperatur. Der hochste Umsatz wurde bei der Thiolgruppe erzielt. Deren Sorptionsvermogen wurde durch Sorption mit Ag+ gemessen. Die hohe Sorptionsgeschwindigkeit wird auf die Hydrophilitat der Cellulosekomponente zuruckgefuhrt.","PeriodicalId":7808,"journal":{"name":"Angewandte Makromolekulare Chemie","volume":"20 1","pages":"179-192"},"PeriodicalIF":0.0,"publicationDate":"1987-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80688206","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: 1
Radiation grafting of hydrophilic monomers onto poly(4‐methylpentene‐1), II. Grafting of long chain monomers and physical properties of the grafted films 亲水单体在聚(4‐甲基戊烯‐1)上的辐射接枝,II。长链单体的接枝及接枝膜的物理性质
Angewandte Makromolekulare Chemie Pub Date : 1987-07-01 DOI: 10.1002/APMC.1987.051520114
Y. S. Soebianto, F. Yoshii, K. Makuuchi, I. Ishigaki
{"title":"Radiation grafting of hydrophilic monomers onto poly(4‐methylpentene‐1), II. Grafting of long chain monomers and physical properties of the grafted films","authors":"Y. S. Soebianto, F. Yoshii, K. Makuuchi, I. Ishigaki","doi":"10.1002/APMC.1987.051520114","DOIUrl":"https://doi.org/10.1002/APMC.1987.051520114","url":null,"abstract":"Radiation grafting of 2-hydroxyethyl methacrylate (HEMA) and methoxytetraethyleneglycol methacrylate (M4G) on low crystallinity poly(4-methylpentene-1) (TPX) has been investigated. Grafting yield increased with increasing pre-irradiation dose, grafting temperature, and monomer concentration. Grafting rate depends on length of molecular chain in the monomers and decreases with increasing chain length. The grafting yields of electron beam irradiated samples were higher than those of γ-irradiated ones because of higher radical concentration. Tensile strength of the grafted film in the dried state increased and the elongation at break decreased with increasing degree of grafting. On the other hand, in the wet state, the tensile strength and elongation at break decreased with increasing the degree of grafting due to the lack of hydrogen bonds between the grafted chains caused by increased water absorption. \u0000 \u0000 \u0000 \u0000Die strahleninduzierte Pfropfung von 2-Hydroxyethylmethacrylat (HEMA) und Methoxytetraethylenglycolmethacrylat (M4G) auf Poly(4-methylpenten-1) (TPX) wurde untersucht. Die Pfropfungsgrade erhohten sich mit zunehmender Vorbestrahlungsdosis, Pfropfungstemperatur und Monomerkonzentration. Die Pfropfungsgeschwindigkeit ist abhangig von der Kettenlange der Monomeren; sie nimmt mit wachsender Kettenlange ab. Bei Bestrahlen der Filme mit Elektronenstrahlen anstelle von γ-Strahlen waren die Pfropfungsgrade hoher. Die Zugfestigkeit der gepfropften Filme im trockenen Zustand stieg mit zunehmendem Pfropfungsgrad an, wahrend die Bruchdehnung abnahm. Dagegen nahmen die Zugfestigkeit und die Bruchdehnung im nassen Zustand mit wachsendem Pfropfungsgrad ab, da Wasserstoffbruckenbindungen zwischen den aufgepfropften Ketten durch die Wasseraufnahme der Filme fehlten.","PeriodicalId":7808,"journal":{"name":"Angewandte Makromolekulare Chemie","volume":"2 1","pages":"159-168"},"PeriodicalIF":0.0,"publicationDate":"1987-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80197674","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
Synthesis of hydrophilic elastomers by radiation grafting 辐射接枝法制备亲水性弹性体
Angewandte Makromolekulare Chemie Pub Date : 1987-07-01 DOI: 10.1002/APMC.1987.051520113
Y. S. Soebianto, F. Yoshii, K. Makuuchi, I. Ishigaki
{"title":"Synthesis of hydrophilic elastomers by radiation grafting","authors":"Y. S. Soebianto, F. Yoshii, K. Makuuchi, I. Ishigaki","doi":"10.1002/APMC.1987.051520113","DOIUrl":"https://doi.org/10.1002/APMC.1987.051520113","url":null,"abstract":"Radiation grafting of acrylic acid (AAc) onto ethylene-propylene rubber (EPR) to obtain hydrophilic elastomers has been investigated. It was found that by addition of alcohol (methanol and 1-propanol) into water as solvent for grafting the degree of grafting increased and formation of homopolymer was retarded. The grafting by addition of alcohol occurred even in deeper portions of the film compared with no addition of alcohol. Grafting rate differed largely with propylene contents in the EPR. Graft polymerization occurred easily in EPR of lower propylene contents such as 22%. Before introducing AAc in grafting the stability of EPR radicals of lower propylene contents was higher in comparison with other components. Water absorption of EPR increased linearly with increasing grafting yield. \u0000 \u0000 \u0000 \u0000Die strahleninduzierte Pfropfung von Acrylsaure auf Ethylen-Propylen-Kautschuk (EPR) wurde untersucht. Es wurde gefunden, das die Pfropfungsgrade bei Zugabe von Alkohol (Methanol und Isopropanol) abnahmen und die Bildung der Homopolymeren verzogert wurde. Bei Zugabe von Alkohol fand Pfropfung auch im Innern des Filmes statt. Die Pfropfungsgeschwindigkeit war sehr stark vom Propylengehalt im EPR abhangig. Die Pfropfungspolymerisation fand bei kleinen Propylengehalten, z. B. bei 22%, leichter statt. Die Stabilitat der Radikale mit niedrigeren Propylengehalten war hoher als die der anderen. Die Wasseraufnahme der gepfropften Filme stiegen linear mit dem Pfropfungsgrad an.","PeriodicalId":7808,"journal":{"name":"Angewandte Makromolekulare Chemie","volume":"60 1","pages":"149-158"},"PeriodicalIF":0.0,"publicationDate":"1987-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85096945","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
Studies on structural aspects of cellulose acetate 醋酸纤维素结构方面的研究
Angewandte Makromolekulare Chemie Pub Date : 1985-03-01 DOI: 10.1002/APMC.1985.051300110
J. N. Suthar, M. J. Patel, K. Patel, R. D. Patel
{"title":"Studies on structural aspects of cellulose acetate","authors":"J. N. Suthar, M. J. Patel, K. Patel, R. D. Patel","doi":"10.1002/APMC.1985.051300110","DOIUrl":"https://doi.org/10.1002/APMC.1985.051300110","url":null,"abstract":"In the present investigation an attempt has been made to throw light on the structure of stiff chain amorphous polymers. For this purpose cellulose acetates (CA) having different degrees of substitution (DS) were prepared. The samples were characterised by IR-spectroscopy, Differential Scanning Calorimetry (DSC) and Dynamic Mechanical Analysis (DMA). Scanning electron micrographs of the cryogenically fractured surfaces of these polymers showed that along with lamellar structures, nodular structures were also observable. \u0000 \u0000 \u0000 \u0000Die vorliegenden Untersuchungen sollen einen Beitrag zur Strukturaufklarung von amorphen Polymeren mit starren Polymerketten darstellen. Zu diesem Zweck wurden Celluloseacetate (CA) mit verschiedenen Substitutionsgraden (DS) hergestellt. Die Proben wurden durch IR-Spektroskopie, Differential-Scanning-Calorimetry (DSC) und dynamisch-mechanische Analyse (DMA) charakterisiert. Rasterelektronenmikroskopische Aufnahmen von gefriergebrochenen Oberflachen dieser Polymeren zeigten, das auser lamellaren Strukturen auch kugelige Strukturen beobachtbar waren.","PeriodicalId":7808,"journal":{"name":"Angewandte Makromolekulare Chemie","volume":"106 1","pages":"125-136"},"PeriodicalIF":0.0,"publicationDate":"1985-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77890114","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
Beiträge zur galvanisierung von polymeren, 11. Metallisierung von mischungen aus epoxidharzen und acrylnitril‐butadien‐copolymeren 警告:从最常见的Metallisierung epoxidharzen和acrylnitril‐butadien‐copolymeren
Angewandte Makromolekulare Chemie Pub Date : 1985-03-01 DOI: 10.1002/APMC.1985.051300115
J. Springer, F. Förster, Siauw Ling Hadiwinoto
{"title":"Beiträge zur galvanisierung von polymeren, 11. Metallisierung von mischungen aus epoxidharzen und acrylnitril‐butadien‐copolymeren","authors":"J. Springer, F. Förster, Siauw Ling Hadiwinoto","doi":"10.1002/APMC.1985.051300115","DOIUrl":"https://doi.org/10.1002/APMC.1985.051300115","url":null,"abstract":"Die Metallisierung von Mischungen aus Epoxidharzen und Acrylnitril-Butadien-Copolymeren hangt von der Wahl des geeigneten Mischungsverhaltnisses sowie von dem Harter ab, mit dem das Epoxidharzvorprodukt in Gegenwart des Copolymeren zur Reaktion gebracht wird. Bei der Verwendung von Triethylentetramin als Harter werden die hochsten Werte fur die Abzugsfestigkeit erzielt, die durch kurzzeitige Ozonbehandlung auf bis zu 150 N/25 mm gesteigert werden konnen. Langere Ozonisierungszeiten fuhren zu geringeren Haftfestigkeiten und zur Schadigung des Materials. \u0000 \u0000 \u0000 \u0000Kavernen treten nur bei epoxidharzreichen Mischungen auf und vergrosern sich mit zunehmender Ozonisierungszeit. Diese Proben besitzen relative geringe Abzugsfestigkeiten. \u0000 \u0000 \u0000 \u0000The metallization of mixtures containing epoxy resins and acrylonitrile-butadiene copolymers depends on taking the suitable ratio of components and on the hardener, which was brought to reaction with the epoxy prepolymer in presence of the copolymer. Using triethylenetetramine as curing agent the highest values of peel strength have been reached and have been increased up to 150 N/25 mm by short-time-treatment with ozone. Longer ozonization times lead to lower values of peel strength and impairment of the material. Caverns occur only in mixtures which are rich on epoxy resin, and increase in size with increasing time of ozone treatment. These samples have relatively low values of peel strength.","PeriodicalId":7808,"journal":{"name":"Angewandte Makromolekulare Chemie","volume":"33 1","pages":"179-189"},"PeriodicalIF":0.0,"publicationDate":"1985-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81065277","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: 1
Reactive polymers, 49. Changes in the porous structure of macroporous copolymers due to successive effects of solvents and temperature† 活性聚合物,49。溶剂和温度对大孔共聚物孔隙结构的影响
Angewandte Makromolekulare Chemie Pub Date : 1985-03-01 DOI: 10.1002/APMC.1985.051300106
J. Hradil, F. Švec
{"title":"Reactive polymers, 49. Changes in the porous structure of macroporous copolymers due to successive effects of solvents and temperature†","authors":"J. Hradil, F. Švec","doi":"10.1002/APMC.1985.051300106","DOIUrl":"https://doi.org/10.1002/APMC.1985.051300106","url":null,"abstract":"By drying at 78°C, the macroporous terpolymer 2,3-dihydroxypropyl methacrylate-co-sodium methacrylate-co-ethylene dimethacrylate with a water retention of 3.78 g H2O/g loses porosity which is renewed by reswelling. Drying of this terpolymer at 0–25°C by which water or methyl alcohol is removed does not disturb its porosity. Less swelling copolymers such as 2,3-dihydroxypropyl methacrylate-co-ethylene dimethacrylate with a water retention of 1.71 g H2O/g do not lose its permanent porosity when dried. Inversion gas chromatography has made possible the determination of the glass transition temperature of these macroporous terpolymers (Tg = 45°C) by using heptane and methyl alcohol as retention acids. With respect to this, and using scanning electron microscopy the loss of porosity due to drying was interpreted as sintering of macroporous copolymers whose polymer networks swell to a higher degree on heating above Tg. \u0000 \u0000 \u0000 \u0000Das makroporose terpolymere Natriumsalz von 2,3-Dihydroxypropylmethacrylat-co-methacrylsaure-co-ethylenglykoldimethacrylat (Wasseraufnahme: 3,78 g H2 O/g) verliert an Porositat, wenn es bei 78°C getrocknet wird. Durch erneute Quellung wird die Anfangsporositat wieder hergestellt. Wenn das gleiche Terpolymere bei 0 bis 25°C getrocknet wird, kann Wasser oder Methanol ohne Porositatsverlust entfernt werden. Wenig quellende Copolymere wie Poly-2,3-dihydroxypropylmethacrylat-co-ethylenglykoldimethacrylat mit einer Wasseraufnahme von 1,71 g H2O/g verlieren beim Trocknen ihre Porositat nicht. Durch inverse Gaschromatographie unter Verwendung von Heptan oder Methanol als Retentionsmittel wurde die Bestimmung der Glastemperatur der hier beschriebenen makroporosen Terpolymeren ermoglicht (Tg = 45°C). Unter Berucksichtigung dieser Messungen und unter Verwendung von rasterelektronenmikroskopischen Aufnahmen wurde der Verlust der Porositat beim Trocknen als Sintervorgang von makroporo;sen Polymeren erklart, deren Polymernetzwerke beim Erwarmen uber Tg starker aufquellen.","PeriodicalId":7808,"journal":{"name":"Angewandte Makromolekulare Chemie","volume":"10 1","pages":"81-90"},"PeriodicalIF":0.0,"publicationDate":"1985-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89216331","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: 20
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