2007
DOI: 10.1295/polymj.pj2007098
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Quantum Beam Studies on Polymer Crystallization under Flow

Abstract: ABSTRACT:One of the longstanding issues in polymer science is crystallization of polymers under flow, especially formation of the so-called shish-kebab. Recent progress in quantum beam technology shed light on the substantial nature in the shish-kebab formation. In this paper we review our recent experiments on polymer crystallization under flow using time-resolved depolarized light scattering, small-angle and wide-angle X-ray scattering and small-angle neutron scattering in a wide spatial scale from 0.1 nm to… Show more

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Cited by 2 publications
(2 citation statements)
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“…Great attention has been paid to the influence of molecular parameters on FIC in recent years, focusing on the roles of short and long chains. According to coil–stretch transition (CST), for specified flow conditions only chains longer than the critical weights ( M* ) can be stretched and the rest shorter ones remain in the coil state. , The stretched chains transform into shish and the coiled chains crystallize as kebab. Although CST enjoys great success in analyzing the molecular mechanism for shish-kebab, it is still a controversial viewpoint. Pennings et al proposed that the stretched network rather than the stretched individual chains is responsible for shish formation, since full extension of individual chains is unlikely to happen in the entangled polymer melt .…”
Section: Introductionmentioning
confidence: 99%
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“…Great attention has been paid to the influence of molecular parameters on FIC in recent years, focusing on the roles of short and long chains. According to coil–stretch transition (CST), for specified flow conditions only chains longer than the critical weights ( M* ) can be stretched and the rest shorter ones remain in the coil state. , The stretched chains transform into shish and the coiled chains crystallize as kebab. Although CST enjoys great success in analyzing the molecular mechanism for shish-kebab, it is still a controversial viewpoint. Pennings et al proposed that the stretched network rather than the stretched individual chains is responsible for shish formation, since full extension of individual chains is unlikely to happen in the entangled polymer melt .…”
Section: Introductionmentioning
confidence: 99%
“…To explore the role of long chains, bidisperse polymer blends, comprised of a tiny fraction of long chains in short-chain matrix, were widely used in FIC study. ,,, A brief summary of the effects of long chains on FIC is given herein. (i) Changing the morphologies of samples.…”
Section: Introductionmentioning
confidence: 99%