2024-03-28T14:28:50Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1577372020-01-29T08:19:31Zcom_10261_56com_10261_3col_10261_309
http://hdl.handle.net/10261/157737
10.1016/j.polymer.2017.10.006
337176
Unprecedented dependence of stiffness parameters and crystallinity on comonomer content in rapidly cooled propylene-co-1-pentene copolymers
Elsevier
2017
artículo
García-Peñas, A.
Gómez-Elvira González, José Manuel
rp11403
Lorenzo, Vicente
Pérez, Ernesto
Cerrada, María L.
Propylene-co-1-pentene copolymers
Monoclinic form
Mesomorphic entities
Trigonal crystallites
Stiffness
Crystallinity
2017-10-04
A thorough evaluation of the mechanical behavior exhibited by fast crystallized propylene-1-pentene copolymers synthesized in a broad range of 1-pentene compositions is here described. Different mechanical magnitudes derived from loading, creep and unloading processes in depth sensing indentation measurements are correlated to structural features. Several ordered forms are able to be developed at the composition interval analyzed in these propylene-1-pentene copolymers applying a fast cooling processing. Moreover, either a single polymorph or distinct ratios of two crystalline lattices can be obtained, depending on comonomer content. Crystallinity as well as the type of existing crystallites play a critical role in the value of those mechanical magnitudes. An atypical and unprecedented dependence of either stiffness or crystallinity on 1-pentene content is observed in these copolymers, associated with their capability of crystallizing in the trigonal form.
Ministerio de Economía, Industria y Competitividad (España)
European Commission
Polymer
2017
130
17
25