Adhesion of statistical and blocky ethylene–octene copolymers to polypropylene

Dias, P.; Yuan, Li-Yan; Poon, B.; Chen, H.Y.; Hiltner, A.; Baer, E.

doi:10.1016/j.polymer.2008.04.022

Cited by 56 publications

(49 citation statements)

References 17 publications

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“…A previous study showed that an OBC improved the interfacial interaction between PP and HDPE as evidenced by reduced HDPE domain size and increased elongation at break 9. Stronger adhesion of the OBC to PP compared with a statistical copolymer was demonstrated by testing the delamination strength of one‐dimensional model blends 10. In the present study, OBC was compared with other polyolefin elastomers as a compatibilizer for PP/HDPE blends.…”

Section: Introductionmentioning

confidence: 84%

“…Copolymers used as compatibilizers for PP and HDPE blends were an ethylene–octene linear multi‐block copolymer (OBC) (Dow Experimental OBC), two ethylene–octene statistical copolymers (EO855 and EO876), two propylene–ethylene statistical copolymers (P/E859 and P/E876), and a styrenic block copolymer (SBC) (Kraton® G1652) (Table I). The structure of the OBC was described previously 10. The OBC had an overall octene content of 11 mol % and density of 0.880 g cm −3 .…”

Section: Methodsmentioning

confidence: 99%

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Comparison of olefin copolymers as compatibilizers for polypropylene and high‐density polyethylene

Yuan

Yakovleva

Chen

et al. 2009

J of Applied Polymer Sci

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Some polyolefin elastomers were compared as compatibilizers for blends of polypropylene (PP) with 30 wt % high-density polyethylene (HDPE). The compatibilizers included a multiblock ethylene-octene copolymer (OBC), two statistical ethylene-octene copolymers (EO), two propylene-ethylene copolymers (P/E), and a styrenic block copolymer (SBC). Examination of the blend morphology by AFM showed that the compatibilizer was preferentially located at the interface between the PP matrix and the dispersed HDPE particles. The brittle-to-ductile (BD) transition was determined from the temperature dependence of the blend toughness, which was taken as the area under the stress-strain curve. All the compatibilized blends had lower BD temperature than PP. However, the blend compatibilized with OBC had the best combination of low BD temperature and high toughness. Examination of the deformed blends by scanning electron microscopy revealed that in the best blends, the compatibilizer provided sufficient interfacial adhesion so that the HDPE domains were able to yield and draw along with the PP matrix.

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Section: Introductionmentioning

confidence: 84%

Section: Methodsmentioning

confidence: 99%

Comparison of olefin copolymers as compatibilizers for polypropylene and high‐density polyethylene

Yuan

Yakovleva

Chen

et al. 2009

J of Applied Polymer Sci

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“…Investigations have found that the block length, octene content as well as the ratio between hard and soft blocks is closely correlated to the apparent properties of this M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 5 promising elastomer. [33][34][35][36][37][38][39][40] In consideration of the difficulty of altering block architecture during synthesizing, we aim to adjust the apparent properties by blending with PE, which possesses architecture similar to hard blocks of OBC. Based on our exploration, we found that PE chains were inclined to cocrystallize with OBC, which made it possible to increase strength without great depression of tenacity.…”

Section: Introductionmentioning

confidence: 99%

Regulation of crystalline morphologies and mechanical properties of olefin multiblock copolymers by blending polymer with similar architecture of constituent blocks

Zhang

Fan

Feng

et al. 2015

Polymer

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“…It is now interesting to compare the adhesion measured with microlayered tapes with the performance of the same copolymers as compatibilizers for PP/HDPE (70/30) blends reported previously [11]. Comparisons can be made in terms of the relative magnitude of the effects and the temperature dependence.…”

Section: Effect Of Temperature On the Delamination Toughnessmentioning

confidence: 93%

“…Block copolymers are often preferred because they are thought to form more interfacial bridges than statistical copolymers [14,15]. In PP/HDPE blends, the improved performance of a block ethylene-octene copolymer when compared with a statistical ethylene-octene copolymer of the same composition supports this view [11]. Nevertheless, in adhesion tests on microlayered tapes, all the ethylene-octene copolymers tested ultimately failed at the PP interface, indicating that the tie-layer adhered more strongly to HDPE than to PP [10].…”

Section: Introductionmentioning

confidence: 99%

Adhesion of propylene–ethylene copolymers to high‐density polyethylene

Yuan

Poon

Marchand

et al. 2009

Polymer Engineering & Sci

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The adhesion of some propylene–ethylene (P/E) copolymers to polypropylene (PP) and high density polyethylene (HDPE) was studied in order to compare them with other olefin copolymers as compatibilizers for PP/HDPE blends. A one‐dimensional model of the compatibilized blends was fabricated by layer‐multiplying coextrusion. The microlayered tapes consisted of many alternating layers of PP and HDPE with a thin tie‐layer inserted at each interface. The thickness of the tie‐layer varied from 0.1 to 15 μm, which included thicknesses comparable to those of the interfacial layer in a compatibilized blend. In the T‐peel test, the P/E copolymers delaminated at the HDPE interface. An elastomeric P/E with higher ethylene content exhibited substantially higher delamination toughness than a more thermoplastic P/E with lower ethylene content. Inspection of the crack‐tip damage zone revealed that a change from deformation of the entire tie‐layer to formation of a localized yielded zone was responsible. By treating the damage zone as an Irwin plastic zone, it was demonstrated that a critical stress controlled the delamination toughness. The temperature dependence of the delamination toughness was also measured. POLYM. ENG. SCI., 2010. © 2009 Society of Plastics Engineers

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Adhesion of statistical and blocky ethylene–octene copolymers to polypropylene

Cited by 56 publications

References 17 publications

Comparison of olefin copolymers as compatibilizers for polypropylene and high‐density polyethylene

Comparison of olefin copolymers as compatibilizers for polypropylene and high‐density polyethylene

Regulation of crystalline morphologies and mechanical properties of olefin multiblock copolymers by blending polymer with similar architecture of constituent blocks

Adhesion of propylene–ethylene copolymers to high‐density polyethylene

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