Polyethylene crystallized from the melt

Wunderlich, B. and Arakawa, T. Polyethylene crystallized from the melt under elevated pressure, J. Polymer Sci., Part A, 2, 3697 (1964)... 

To elucidate the phase structure in detail it is necessary to characterize the molecular chain conformation and dynamics in each phase. However, it is rather difficult to obtain such molecular information, particularly of the noncrystalline component, because it is substantially amorphous. In early research in this field, broad-line H NMR analysis showed that linear polyethylene crystallized from the melt comprises three components with different molecular mobilities solid, liquid-like and intermediate molecular mobility [13-16]. The solid component was attributed to molecules in the crystalline region, the liquid component to... 

Geil PH, Anderson F, Wunderlich B, Arakawa T (1964) Morphology of polyethylene crystallized from the melt under pressure. Polym Sci A 2 3707... 

Figure 12.34 Loss compliance isotherms in the frequency domain of linear polyethylene crystallized from the melt. (From Ref. 44.)...

A preferentially and a sheaf-like aggregation with random in-plane orientation are observed for the thinner films (thicknesses of 0.1, 0.2 and 0.4 pm in panels a-c). By contrast thick films (0.6 pm and thicker, panel d) show a morphology that resembles the well known (bulk) spherulitic form with a banded structure, characteristic of linear polyethylene crystallized from the melt at moderately high undercooling. 

Abo el Maaty MI, Bassett DC (2005) Evidence for isothermal lamellar thickening at and behind the growth front as polyethylene crystallizes from the melt. Polymer 46 8682-8688 Abo el Maaty MI, Bassett DC (2006) On the time for fold surfaces to order during the crystallization of polyethylene from the melt and its dependence on molecular parameters. Polymer 47 7469-7476... 

Abo El Maaty MI, Bassett MD (2005) Evidence for isothermal lamellar thickening at and behind the growth front as polyethylene crystallizes from the melt. Polymer 46(20) 8682-8688... 

Dynamic Melt Properties of Polymer Blends," with A. S. Hill, VoZymoA EngZmcAZng and Science9 10.> 5 289, Sept. 1970. "Melting of Linear Polyethylene Crystallized from the Melt under Shear Stress," with T. W. Haas, J. 0 AppZZed PoZymeA Science, lU, 2I+07 (1970). 

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