Large‐Scale Fluctuation Behavior Prior to the Crystallization of Poly(ethylene terephthalate) Glass: A Small‐Angle Light Scattering Study

The present work provides a critical review of polymer crystallization studies using SALS; experimental methods, analysis techniques, observations and their relations with respect to other techniques are discussed. Furthermore, the fact that nucleation might be accompanied by large scale density fluctuations has been investigated for the flow‐induced crystallization of iPB. SALS was applied to measure density and orientation fluctuations, whereas complementary results were obtained from optical microscopy. The observations from both crystallization and melting experiments seem to indicate that the detected density fluctuations result from the presence of weakly anisotropic structures, rather than being an indication of densification before the onset of crystallization.magnified image

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Density Fluctuations during the Early Stages of Polymer Crystallization: An Overview

Baert

Puyvelde

2008

Macro Materials & Eng

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Flow-induced crystallization precursor structure in high molecular weight isotactic polypropylene (HMW-iPP)/low molecular weight linear low density polyethylene (LMW-LLDPE) binary blends

Keum

Mao

Zuo

et al. 2013

Polymer

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Effect of nanoCaCO₃on crystallisation behaviour of LLDPE studied by SALS

Liu¹,

Li²,

Yang³

et al. 2007

Plastics, Rubber and Composites

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The effect of nanoCaCO 3 on crystallisation behaviour of linear low density polyethylene (LLDPE) was investigated through time resolved small angle light scattering (SALS). The results indicate that the spherulite size of LLDPE is influenced in the presence of nanoCaCO 3 . In case the LLDPE and composites were crystallised at room temperature, the spherulite size of LLDPE composites is smaller than that of LLDPE. Also, the contents of the nanoCaCO 3 (20?0-30?0 wt-%) could influence the structure of spherulite. The spherulite size of LLDPE is also influenced by the crystallisation temperature. When the crystallisation temperature is increased to 85uC, the spherulite size of LLDPE is remarkably affected by the contents of nanoCaCO 3 . At isothermal crystallisation temperature of 85uC, the crystallisation induction time of LLDPE is greatly shortened in the presence of nanoCaCO 3 . Furthermore, there is an orientation fluctuation emerging in the early stage of crystallisation in LLDPE containing 2?0 wt-% nanoCaCO 3 . Liu et al. Effect of nanoCaCO 3 on crystallisation behaviour of LLDPE studied by SALS Plastics, Rubber and Composites 2007 VOL 36 NO 7/8

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Large‐Scale Fluctuation Behavior Prior to the Crystallization of Poly(ethylene terephthalate) Glass: A Small‐Angle Light Scattering Study

Cited by 3 publications

References 22 publications

Density Fluctuations during the Early Stages of Polymer Crystallization: An Overview

Density Fluctuations during the Early Stages of Polymer Crystallization: An Overview

Flow-induced crystallization precursor structure in high molecular weight isotactic polypropylene (HMW-iPP)/low molecular weight linear low density polyethylene (LMW-LLDPE) binary blends

Effect of nanoCaCO₃on crystallisation behaviour of LLDPE studied by SALS

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Large‐Scale Fluctuation Behavior Prior to the Crystallization of Poly(ethylene terephthalate) Glass: A Small‐Angle Light Scattering Study

Cited by 3 publications

References 22 publications

Density Fluctuations during the Early Stages of Polymer Crystallization: An Overview

Density Fluctuations during the Early Stages of Polymer Crystallization: An Overview

Flow-induced crystallization precursor structure in high molecular weight isotactic polypropylene (HMW-iPP)/low molecular weight linear low density polyethylene (LMW-LLDPE) binary blends

Effect of nanoCaCO3on crystallisation behaviour of LLDPE studied by SALS

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Product

Resources

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Effect of nanoCaCO₃on crystallisation behaviour of LLDPE studied by SALS