Zobrazeno 1 - 10 of 113 pro vyhledávání: '"RAYMOND F. BOYER"'
1
Molecular weight dependence of the sintering-flow behavior for particulate polystyrenes
Autor: Kathleen M. Panichella, Lisa R. Denny, Raymond F. Boyer
Publikováno v: Journal of Polymer Science: Polymer Symposia. 71:39-58
A series of particulate anionic PSs having Mn values from 1900 to 350,000 has been observed visually on a hot-stage microscope at heating rates from 0.2 to 10 K/min. The temperature range over which the particles sinter, coalesce, and flow onto the g
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b796fb73e49fe5460706a9adfaaec494
https://doi.org/10.1002/polc.5070710107
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3
The high temperature (T > Tg) amorphous transition in atactic polystyrene
Autor: Raymond F Boyer
Publikováno v: Journal of Polymer Science Part C: Polymer Symposia. 14:267-281
We first summarize available experimental evidence indicating the existence of a second-order transition or relaxation region in atactic polystyrene at 60 to 100°C. above Tg. It increases from 137°C. at a molecular weight of 3000 to 192°C. at a mo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::895c0be5a97ac35ab3d9df1072e2eefb
https://doi.org/10.1002/polc.5070140120
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4
Preface
Autor: Raymond F. Boyer
Publikováno v: Journal of Polymer Science Part C: Polymer Symposia. 14:iii-v
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::20ff55dfd1e16a574e6b93e1983fea20
https://doi.org/10.1002/polc.5070140102
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5
Dependence of Tg(K) on the product of the cohesive energy density (CED) and chain stiffness parameter C.infin
Autor: Raymond F. Boyer
Publikováno v: Macromolecules. 25:5326-5330
A selected group of standard atactic polymers with CC, CO, diene, and SiO backbones and some crystalline polymers for which an amorphous phase T g is known have T g 's which increase with the product of cohesive energy density (CED) times the charact
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a0688162e4a63514a4252a2a852d9898
https://doi.org/10.1021/ma00046a034
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8
X-ray scattering from amorphous acrylate and methacrylate polymers: Evidence of local order
Autor: Raymond F. Boyer, J. Heijboer, Robert L. Miller
Publikováno v: Journal of Polymer Science: Polymer Physics Edition. 22:2021-2041
X-ray scattering patterns from amorphous polymers frequently contain halos corresponding to distances significantly greater than that of van der Waals packing of carbon atoms. Regularities in the positions of such halos as a function of pendant group
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c06435d81fcd910d5c728d79759f37b7
https://doi.org/10.1002/pol.1984.180221203
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10
General reflections on the symposium on physical structure of the amorphous state
Autor: Raymond F. Boyer
Publikováno v: Journal of Macromolecular Science, Part B. 12:253-301
Following a discussion of the historical perspective of the problem of order in amorphous polymers and a definition of terms, this paper reviews various topics in the literature. This problem and the related one of order in liquid alkanes (as a model
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1617429f4691174386d395a6d1ffe697
https://doi.org/10.1080/00222347608212774
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