Radiation Physics and Chemistry (1977)最新文献_第6页

Radiation grafting of acrylic acid, methacrylic acid and polyfunctional methacrylates onto poly(vinyl chloride) 丙烯酸、甲基丙烯酸和多官能团甲基丙烯酸酯在聚氯乙烯上的辐射接枝

Radiation Physics and Chemistry (1977) Pub Date : 1985-01-01 DOI: 10.1016/0146-5724(85)90128-1

Ung-Ping Wang

{"title":"Radiation grafting of acrylic acid, methacrylic acid and polyfunctional methacrylates onto poly(vinyl chloride)","authors":"Ung-Ping Wang","doi":"10.1016/0146-5724(85)90128-1","DOIUrl":"10.1016/0146-5724(85)90128-1","url":null,"abstract":"<div><p>Gamma and electron-beam radiation induced graftcopolymerization of acrylic acid, methacrylic acid, trimethylolpropane trimethacrylate (TMPTMA) and tetraethyleneglycol dimethacrylate (TEGDMA) onto PVC-films has been investigated. Both swelling effect and oxygen retardation effect in air radiation phase were found to be nonsignificant below the dosages of 1.2 Mrad due to the protection of free radicals by the quick formed gel's network. The graft percentage was increased with the dose-rate and the total dosage, becoming slowly levelling over the doses of 2.4 Mrad. The grafting-rate is regarded to be proportional to the n-th power of the dose- rate, where the value of n being as 1.10<figure><img></figure>1.38 for gamma-irradiation and 1.27<figure><img></figure>1.42 for electron- beam irradiation. Electron-beam irradiation, being extremely high dose-rate, stimulates the grafting-rate, especially the grafting-rate of polyfunctional TEGDMA and TMPTMA because of the quick formation of three dimensional network formed by intra- and inter-crosslinking. Although the grafting results of both gamma and electron-beam irradiation are similar, the latter irradiation favors the mass graft-processing of PVC-films.</p><p>The formation of the grafted stratum on the PVC-film surfaces was found to induce the positive effects of big improvement in tensile-strength, excellent resistant toughness against the erasure of the prints on the grafted PVC-film surfaces and strong adhesive character with several adhesive chemicals.</p></div>","PeriodicalId":101054,"journal":{"name":"Radiation Physics and Chemistry (1977)","volume":"25 4","pages":"Pages 491-499"},"PeriodicalIF":0.0,"publicationDate":"1985-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0146-5724(85)90128-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53758139","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

Radiation induced modification of polyetherurethane films and tubes: Platelet adhesion and in vivo experiments 辐射诱导聚聚氨酯膜和管的改性:血小板粘附和体内实验

Radiation Physics and Chemistry (1977) Pub Date : 1985-01-01 DOI: 10.1016/0146-5724(85)90132-3

B. Jansen , A. Ludwicka , L.W. Storz

引用次数: 9

Decomposition of hydrogen peroxide on silver-nickel oxide two-component catalysts and the effects of ionizing radition 过氧化氢在银镍氧化物双组分催化剂上的分解及电离辐射的影响

Radiation Physics and Chemistry (1977) Pub Date : 1985-01-01 DOI: 10.1016/0146-5724(85)90175-X

V Múčka, R Silber

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引用次数: 4

Studies on irradiation of agar-agar in the solid state: On the changes of colloid titration value of agar-agar hydrosol produced by irradiation 琼脂固体辐照的研究:辐照后琼脂纯溶胶胶体滴定值的变化

Radiation Physics and Chemistry (1977) Pub Date : 1985-01-01 DOI: 10.1016/0146-5724(85)90190-6

Mizuho Nisizawa

引用次数: 0

The effect of radiation on corrosion of steel in high-temperature water 辐射对高温水中钢腐蚀的影响

Radiation Physics and Chemistry (1977) Pub Date : 1985-01-01 DOI: 10.1016/0146-5724(85)90216-X

B.G. Ershov, A.I. Milaev, V.G. Petrosyan, N.I. Kartashov, P.Ya. Glasunov, S.A. Tevlin

引用次数: 5

Thermal effects in radiation processing 辐射加工中的热效应

Radiation Physics and Chemistry (1977) Pub Date : 1985-01-01 DOI: 10.1016/0146-5724(85)90276-6

Z.P. Zagórski

{"title":"Thermal effects in radiation processing","authors":"Z.P. Zagórski","doi":"10.1016/0146-5724(85)90276-6","DOIUrl":"10.1016/0146-5724(85)90276-6","url":null,"abstract":"<div><p>The balance of ionizing radiation energy incident on an object being processed is discussed in terms of energy losses, influencing the amount really absorbed. To obtain the amount of heat produced, the absorbed energy is corrected for the change in internal energy of the system and for the heat effect of secondary reactions developing after the initiation. The temperature of a processed object results from the heat evolved and from the specific heat of the material comprising the object. The c<sub>p</sub> of most materials is usually much lower than that of aqueous systems and therefore temperatures after irradiation are higher. The role of low specific heat in radiation processing at cryogenic conditions is stressed. Adiabatic conditions of accelerator irradiation are contrasted with the steady state thermal conditions prevailing in large gamma sources. Among specific questions discussed in the last part of the paper are: intermediate and final temperature of composite materials, measurement of real thermal effects in situ, neutralization of undesired warming experienced during radiation processing, processing at temperatures other than ambient and administration of very high doses of radiation.</p></div>","PeriodicalId":101054,"journal":{"name":"Radiation Physics and Chemistry (1977)","volume":"25 1","pages":"Pages 291-303"},"PeriodicalIF":0.0,"publicationDate":"1985-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0146-5724(85)90276-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53764584","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

Thermal stability of radiation curable materials 辐射固化材料的热稳定性

Radiation Physics and Chemistry (1977) Pub Date : 1985-01-01 DOI: 10.1016/0146-5724(85)90279-1

V.P. Thalacker, T.E. Boettcher

引用次数: 8

The radiation chemistry of polyetherimides 聚醚酰亚胺的辐射化学

Radiation Physics and Chemistry (1977) Pub Date : 1985-01-01 DOI: 10.1016/0146-5724(85)90287-0

Rafil Basheer , Malcolm Dole

引用次数: 16

Radiation research at the central institute of isotope and radiation research, Leipzig 莱比锡中央同位素与辐射研究所的辐射研究

Radiation Physics and Chemistry (1977) Pub Date : 1985-01-01 DOI: 10.1016/0146-5724(85)90193-1

K. Wetzel

引用次数: 0

Organizing committee 组织委员会

Radiation Physics and Chemistry (1977) Pub Date : 1985-01-01 DOI: 10.1016/0146-5724(85)90240-7

引用次数: 0