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pro vyhledávání: '"Paul J. Phillips"'
Autor:
Paul J. Phillips, Rahul Patki
Publikováno v:
European Polymer Journal. 44:534-541
This rapid communication reports a summary of the key findings of crystallization kinetics studies of unfractionated high density (linear) polyethylene at extremely large supercoolings. We report, for the first time, the maximum in crystal growth rat
Autor:
Rahul Patki, Paul J. Phillips
Publikováno v:
Journal of Plastic Film & Sheeting. 23:221-238
Fine bare wire thermocouples (12.5 and 25 μm) embedded in polymer films have been used to generate cooling curves in a series of studies, reported earlier, involving crystallization at cooling rates as high as 2000°/min and comparable to those used
Autor:
Paul J. Phillips, Stein Schreiber Lee
Publikováno v:
European Polymer Journal. 43:1952-1962
The crystallization kinetics of polyamide 66 have been studied using polarized optical microscopy. The growth rate data for positively birefringent spherulites in polyamide 66 show a distinct change of slope, which would be identified as a regime I/I
Autor:
Paul J. Phillips, Stein Schreiber Lee
Publikováno v:
European Polymer Journal. 43:1933-1951
The effect of isothermal crystallization temperature and time on the lamellar thickness and the melting behavior of polyamide 66 has been studied. Measurements were made of the melting temperature, crystallinity, and the long period. When calculated
Autor:
Xiaoping Guan, Paul J. Phillips
Publikováno v:
European Polymer Journal. 43:1219-1233
The dynamic mechanical properties of a well-characterized series of homogeneous ethylene/1-octene copolymers with different random hexyl branch contents and prepared using different cooling conditions have been examined using dynamic mechanical analy
Autor:
Anita Dimeska, Paul J. Phillips
Publikováno v:
Polymer. 47:5445-5456
Two random propylene copolymers with low ethylene content synthesized by Ziegler–Natta catalysts were used is this study to investigate the formation of γ-crystal phase during isothermal crystallization at high pressures. At atmospheric pressure t
Autor:
Paul J. Phillips, Bruce X. Guan
Publikováno v:
Polymer. 46:8763-8773
Much of what we think we know about crystallization in polymers is obtained from studies carried out under isothermal conditions. From extrapolations of equilibrium melting temperature to crystallization regimes, interpretations in the literature all
Publikováno v:
Journal of Applied Polymer Science. 93:534-544
Aliphatic polycarbonates are a relatively new class of polymer, which are characterized by an instability at the functional group, which makes them easily degraded and capable of biodegradation; as such, they constitute a potentially powerful group o
Publikováno v:
Journal of Applied Polymer Science. 89:1163-1176
A homologous series of aliphatic polycar- bonates with different side-chain lengths was synthesized by ring-opening polymerization of terminal epoxides with CO2 using zinc adipionate as catalyst (patented process of Empower Materials (formerly PAC Po
Autor:
John Wagner, Paul J. Phillips
Publikováno v:
Polymer. 42:8999-9013
The crystallization behavior of a linear polyethylene has been studied using conventional isothermal hot stage microscopy and with the Ding–Spruiell method of rapid cooling. When studied at rapid cooling rates the polymer generates its own pseudo-i