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Title: Effects of layer-multiplying and interface on the content of β-transcrystallization in PP

Abstract

The alternating multilayered polypropylene (PP layer)/β-nucleating agent filled-polypropylene (β-PP layer) were prepared through layer-multiplying extrusion combined with an assembly of layer-multiplying elements (LM Es). The content of β-crystal was firstly evaluated by differential scanning calorimetry (DSC), which indicated that the relative amount of the β-crystal increased from 38.67% to 81.22% with the increase of layer numbers from 2-layer to 128-layer. It was well consistent with the results of X-ray diffraction (XRD). The morphology observation of β-crystal by polarizing microscope (POM) revealed that the closely packed nuclei in the interface could induce numerous β-transcrystallization in pure PP layer due to the confinement effect. The non-isothermal crystallization kinetic analysis via Mozhishen’s methods manifested that the crystallization rate was greatly enhanced by the augment of the layered interface.

Authors:
; ;  [1]
  1. State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, Sichuan, P.R.China, 610065 (China)
Publication Date:
OSTI Identifier:
22391868
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1664; Journal Issue: 1; Conference: PPS-30: 30. International Conference of the Polymer Processing Society, Cleveland, OH (United States), 6-12 Jun 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CALORIMETRY; CRYSTALLIZATION; CRYSTALS; EXTRUSION; INTERFACES; LAYERS; MORPHOLOGY; POLYPROPYLENE; X-RAY DIFFRACTION

Citation Formats

Lei, Fan, Li, Jiang, E-mail: li-jiang@scu.edu.cn, E-mail: nic7702@scu.edu.cn, and Guo, Shaoyun, E-mail: li-jiang@scu.edu.cn, E-mail: nic7702@scu.edu.cn. Effects of layer-multiplying and interface on the content of β-transcrystallization in PP. United States: N. p., 2015. Web. doi:10.1063/1.4918469.
Lei, Fan, Li, Jiang, E-mail: li-jiang@scu.edu.cn, E-mail: nic7702@scu.edu.cn, & Guo, Shaoyun, E-mail: li-jiang@scu.edu.cn, E-mail: nic7702@scu.edu.cn. Effects of layer-multiplying and interface on the content of β-transcrystallization in PP. United States. doi:10.1063/1.4918469.
Lei, Fan, Li, Jiang, E-mail: li-jiang@scu.edu.cn, E-mail: nic7702@scu.edu.cn, and Guo, Shaoyun, E-mail: li-jiang@scu.edu.cn, E-mail: nic7702@scu.edu.cn. Fri . "Effects of layer-multiplying and interface on the content of β-transcrystallization in PP". United States. doi:10.1063/1.4918469.
@article{osti_22391868,
title = {Effects of layer-multiplying and interface on the content of β-transcrystallization in PP},
author = {Lei, Fan and Li, Jiang, E-mail: li-jiang@scu.edu.cn, E-mail: nic7702@scu.edu.cn and Guo, Shaoyun, E-mail: li-jiang@scu.edu.cn, E-mail: nic7702@scu.edu.cn},
abstractNote = {The alternating multilayered polypropylene (PP layer)/β-nucleating agent filled-polypropylene (β-PP layer) were prepared through layer-multiplying extrusion combined with an assembly of layer-multiplying elements (LM Es). The content of β-crystal was firstly evaluated by differential scanning calorimetry (DSC), which indicated that the relative amount of the β-crystal increased from 38.67% to 81.22% with the increase of layer numbers from 2-layer to 128-layer. It was well consistent with the results of X-ray diffraction (XRD). The morphology observation of β-crystal by polarizing microscope (POM) revealed that the closely packed nuclei in the interface could induce numerous β-transcrystallization in pure PP layer due to the confinement effect. The non-isothermal crystallization kinetic analysis via Mozhishen’s methods manifested that the crystallization rate was greatly enhanced by the augment of the layered interface.},
doi = {10.1063/1.4918469},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1664,
place = {United States},
year = {2015},
month = {5}
}