نتایج جستجو برای: poly4 methyl 1 pentene
تعداد نتایج: 2819645 فیلتر نتایج به سال:
Abstract In this study, cellulose acetate and poly (4-methyl-1-pentene) (CA/PMP) nanofibers were co-electrospun with a blending ratio of 1:1 followed by deacetylation treatment to produce cellulose/PMP nanofibers. The physical morphology was characterized SEM which reveals even bead-less an average diameter 650 nm. FTIR study confirmed the removal acetyl groups after deacetylation, x-ray diffra...
The simultaneous etherification of isobutene and isoamylenes with ethanol has been studied using macroreticular acid ion-exchange resins as catalyst. Most of the experiments were carried out over Amberlyst-35. In addition, Amberlyst-15 and Purolite CT-275 were also tested. Chemical equilibrium of four chemical reactions was studied: ethyl tert-butyl ether formation, tert-amyl ethyl ether format...
The title compound, C(24)H(20)F(6)OS(2), exhibiting photochromic behaviour, has thienyl and benzothienyl substituents attached to the double-bond C atoms of the envelope-shaped cyclo-pentene ring. The mean planes of aromatic systems form dihedral angles of 43.0 (1) (thien-yl) and 73.8 (1)° (benzothien-yl) with the mean plane of the C-C=C-C portion of the cyclo-pentene ring. This conformation av...
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