Composition-dependent phase segregation and cocrystallization behaviors of blends of metallocene-catalyzed octene-LLDPE(D) and LDPE(H)

Composition-dependent phase segregation and cocrystallization behaviors of blends of metallocene-catalyzed octene-LLDPE(D) and LDPE(H)

The morphological structures of slowly cooled blends of deuterated metallocene-catalyzed octene linear low-density polyethylene (O-mLLDPE(D)), and hydrogenous low-density polyethylene (LDPE(H)) were studied by using small angle neutron scattering in combination with complementary small angle X-ray s...

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Bibliographic Details
Published in:Polymer (Guilford) Vol. 51; no. 24; pp. 5799 - 5806
Main Authors: Shin, Tae Joo, Lee, Byeongdu, Seong, Baik Shuk, Han, Young Soo, Lee, Chang-Hee, Song, Hyun Hoon, Stein, Richard S., Ree, Moonhor
Format: Journal Article
Language:English
Published: Kidlington Elsevier Ltd 12-11-2010
Elsevier
Subjects:
Applied sciences
Blends
Cocrystallization
Exact sciences and technology
Nanocomposites
Nanomaterials
Nanostructure
Neutron scattering
O-mLLDPE/LDPE blend
Organic polymers
Physicochemistry of polymers
Polyethylenes
Polymer blends
Properties and characterization
Segregations
Small angle neutron scattering (SANS)
Small angle X-ray scattering (SAXS)
Structure, morphology and analysis
Small angle X-ray scattering (SAXS)
O-mLLDPE/LDPE blend
Small angle neutron scattering (SANS)
Polymer blends
Cocrystallization
Composition effect
Nanostructure
Small angle X ray scattering
Experimental study
Low density ethylene polymer
Small angle neutron scattering
Supramolecular structure
Linear low density ethylene polymer
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Summary:The morphological structures of slowly cooled blends of deuterated metallocene-catalyzed octene linear low-density polyethylene (O-mLLDPE(D)), and hydrogenous low-density polyethylene (LDPE(H)) were studied by using small angle neutron scattering in combination with complementary small angle X-ray scattering and differential scanning calorimetry. The phase segregation, which is more nanoscale than macroscale, and cocrystallization behaviors were found to vary with the blend composition. Phase-segregated O-mLLDPE(D) lamellae are predominantly formed in LDPE(H)-rich compositions. In contrast, few segregated O-mLLDPE(D) lamellae form in O-mLLDPE(D)-rich compositions, and instead O-mLLDPE(D) lamellar stacks are extensively cocrystallized with LDPE(H) mostly in the interlamellar amorphous region. [Display omitted]
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ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2010.09.075