Zobrazeno 1 - 10
of 18
pro vyhledávání: '"J. V. Aleman"'
Autor:
J. V. Aleman
Publikováno v:
Journal of Applied Polymer Science. 44:1017-1025
Viscoelastic parameters of low-density polyethylene melt (LDPE) in compression creep have been measured. Volume deformation (k%) increases as pressure (P) increases and temperature (T) decreases. Plots of the bulk creep compliance B(t) vs. time (t) m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb641601c071c7ccb95a15b6f926e033
https://doi.org/10.1002/app.1992.070440611
https://doi.org/10.1002/app.1992.070440611
Autor:
J. V. Aleman
Publikováno v:
Angewandte Makromolekulare Chemie. 181:53-66
Viscoelastic parameters of polystyrene (PS) melt in compression creep have been measured in an lnstron capillary-rheometer. Bulk compression creep compliance B(t) shows plateau regions in the molten state (B1) and the glassy state (Bg), both decreasi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b4eef1de47b2790746ea302748f0da8
https://doi.org/10.1002/apmc.1990.051810104
https://doi.org/10.1002/apmc.1990.051810104
Autor:
J. V. Aleman
Publikováno v:
Polymer Engineering and Science. 30:326-334
Bulk compression flow of high density polyethylene (HDPE) and low density polyethylene (LDPE) have been measured at temperatures of 423 to 463K, pressure up to 150 MPa, and bulk compression rates of about 1.0 to 200.00 × 10−5 s−1. Bulk and surfa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4946aa90529744e0794c2825047dcbd4
https://doi.org/10.1002/pen.760300603
https://doi.org/10.1002/pen.760300603
Autor:
J. V. Aleman
Publikováno v:
Third European Rheology Conference and Golden Jubilee Meeting of the British Society of Rheology ISBN: 9789401068383
Bulk compression creep of molten polymers has received almost no attention to-date (1) because of the commonly accepted notions that no volume changes of importance take place in polymers during actual practice, and the inherent practical difficultie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1541279c57ef8b0d5f9a22242a708e60
https://doi.org/10.1007/978-94-009-0781-2_13
https://doi.org/10.1007/978-94-009-0781-2_13
Autor:
J. V. Aleman
Publikováno v:
Rheologica Acta. 27:61-68
Volume viscosity of polypropylene, polystyrene, and low density polyethylene are described. Shear, elongational, and volume viscosities may be interrelated with the help of scaling equations. They explain the effect on elongational viscosity of strai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad1c7d0f550b58b2dd99dc58a42a6890
https://doi.org/10.1007/bf01372451
https://doi.org/10.1007/bf01372451
Autor:
J. V. Aleman
Publikováno v:
Colloid & Polymer Science. 266:975-983
Volume flow of 1,4 cis polybutadiene (1,4 cis PB) of ¯M n =311.900,T g =156 K, andT m =266 K, has been measured. Elastic modulus of the elastic wave, longitudinal volume viscosity, initial longitudinal volume viscosity, and retardation times are des
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b2be7e79234382e016e4212c09984ab
https://doi.org/10.1007/bf01428805
https://doi.org/10.1007/bf01428805
Autor:
M. Sanchez-Sancha, J. V. Aleman
Publikováno v:
Rheologica Acta. 23:31-39
The volume flow of poly (vinyl chloride) (\(\bar M_n = 45,000\) = 45,000,T g = 350 K) has been measured in an Instron Capillary Rheometer.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b33bf5c49550dd022fa1877836d42723
https://doi.org/10.1007/bf01333873
https://doi.org/10.1007/bf01333873
Autor:
J. V. Aleman, M. Sanchez‐Sancha
Publikováno v:
Journal of Rheology. 29:307-321
The volume flow of poly(butylene terephthalate) (PBT) of Mn=19,600, Tm=598 K and Tg=316 K, has been measured in an Instron Capillary Rheometer. The elastic modulus of the longitudinal wave, longitudinal volume viscosity, initial longitudinal volume v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2044340162c9b44a042f3ec54665055d
https://doi.org/10.1122/1.549810
https://doi.org/10.1122/1.549810
Autor:
F. Hurtado-Laguna, J. V. Aleman
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 26:2631-2649
Volume flow of poly(methyl methacrylate) (PMMA) (Mn = 43,000 and Tg = 384) has been measured in an Instron Capillary Rheometer. Elastic modulus of the longitudinal wave, longitudinal volume viscosity, initial longitudinal volume viscosity, and retard
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::412321fd429a0f2bd3a21111e4f12ceb
https://doi.org/10.1002/pola.1988.080261002
https://doi.org/10.1002/pola.1988.080261002
Autor:
J. V. Aleman
Publikováno v:
Polymer Engineering and Science. 23:177-182
Flow of molten epoxide prepolymer (Tg = 303 K, Mn 889, Mu/Mn = 1.46) shows stress jumps. A hydrodynamic explanation is forwarded, and a check of the theoretical jump is carried out, with shear viscosites and shear moduli measured at 361 K. The increa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3be82563b9966fc280370883f5b7d4de
https://doi.org/10.1002/pen.760230402
https://doi.org/10.1002/pen.760230402