Premium
Blends of polypropylene with poly(cis‐butadiene) rubber. I. Phase structure and morphology of blends
Author(s) -
Sheng Jing,
Qi LanYing,
Yuan XuBo,
Shen NingXiang,
Bian DongCai
Publication year - 1997
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19970620)64:12<2265::aid-app1>3.0.co;2-j
Subject(s) - materials science , polymer blend , polypropylene , natural rubber , morphology (biology) , copolymer , composite material , scanning electron microscope , small angle x ray scattering , phase (matter) , polymer chemistry , scattering , polymer , chemistry , optics , physics , organic chemistry , biology , genetics
Pressed films of blends of polypropylene with poly(cis‐butadiene) rubbers (PcBR) or grafted copolymer of ethyl acrylate (EA) onto PcBR (PcBR‐g‐EA) was examined by IR spectra, small angle X‐ray scattering, small angle laser scatering (SALS), and scanning election microscopy (SEM). The problem of isomerization on PcBR (or PP/PcBR) is discussed by melt mixing (at a temperature of 180°C) using IR. X‐ray scatering from the relation of phase was analyzed using Porod's law and led to the values of the interface layer of the blends. With increasing content of rubber, the interface layer thickness (σ b ) had a maximum value at 60/40 (PP/PcBR‐g‐EA) for the blends. The invariant (Q) was calculated and the relation of Q with σ b was calculated using Debye‐Buech statistical theory, and the average chord length (l) was obtained by Porod's definition of blends. The morphology and structure of the blends were investigated by SEM. The phase separation of the blends was found by SALS. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 64: 2265–2272, 1997