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1. Influences of melt-draw ratio and annealing on the crystalline structure and orientation of poly(4-methyl-1-pentene) casting films

Author:
Yin, Bo,   et al.   ; Ma, Ai-ping; Xu, Li-yang; Yang, Ming-bo; Xie, Bang-hu;     Show all 5 Authors
Source:
RSC advances 2016 v.6 no.67 pp. 62038-62044
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; annealing; crystal structure; crystals; differential scanning calorimetry; melting; scanning electron microscopy; temperature
Abstract:
... Poly(4-methyl-1-pentene) casting films with row-nucleated lamellar structure were extruded through a slit die followed by stretching using a chill roll. The influences of melt draw ratio, annealing temperature, annealing time and supplied strain level on the crystalline morphology and orientation of the poly(4-methyl-1-pentene) casting films were carefully investigated by means of scanning electro ...
DOI:
10.1039/c6ra08156h

2. Tailoring the impact behavior of polyamide 6 ternary blends via a hierarchical core–shell structure in situ formed in melt mixing

Author:
Yin, Bo,   et al.   ; Dou, Rui; Shen, Chao; Yang, Ming-bo; Xie, Bang-hu;     Show all 5 Authors
Source:
RSC advances 2015 v.5 no.19 pp. 14592-14602
ISSN:
2046-2069
Subject:
annealing; extrusion; impact strength; melting; mixing; polyamides; rubber; viscosity
Abstract:
... PA6-based ternary blends were prepared by melt blending of HDPE-g-MA and EPDM rubber, in which EPDM with a low and high viscosity was respectively selected to construct different core–shell morphologies. The core–shell morphology evolution was subsequently controlled via quiescent melt annealing. The relationship between the hierarchical core–shell structure and impact behaviors were studied syste ...
DOI:
10.1039/c4ra14207a