Structure–property relationship of polycarbonate/polypropylene alloys prepared <i>via</i> eccentric rotor extruder

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Abstract

In this work, PC/PP alloys were respectively prepared by eccentric rotor extruder (ERE) and twin screw extruder (TSE). By analyzing the mechanical properties, morphology, rheological behavior and thermal properties of PC/PP alloys, the effects of processing methods on the two-phase structure and properties of PC/PP alloys were studied. The results showed that the size of the dispersed phase of PC/PP alloys was smaller and its distribution was more uniform under the elongational flow field provided by ERE. Compared to the typical sea-island phase structure provided by the shear flow field, the morphology of the alloys showed a “sea-island-fiber” phase structure under the elongational flow field. Compared to the TSE, the notched lzod impact strength of the PC/PP alloy prepared by ERE increased by 31.0%. ERE played a stronger effect on the dispersion and distribution of PC/PP alloys, which was also confirmed in the results of dynamic rheology analysis and differential scanning calorimetry. The blending method dominated by the elongational flow field could prepare PC/PP alloys with better properties.

Abstract

In this work, PC/PP alloys were respectively prepared by eccentric rotor extruder (ERE) and twin screw extruder (TSE).

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Most cited references 17

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Preparation, characterization and properties of PLA/TiO2 nanocomposites based on a novel vane extruder

Haichen Zhang, Jintao Huang, Li. Yang … (2015)

Polylactide/TiO 2 nanocomposites with different contents of nanoscale TiO 2 were prepared by melt blending with a vane extruder in this work. Polylactide/TiO 2 nanocomposites with different contents of nanoscale TiO 2 were prepared by melt blending with a vane extruder in this work. SEM and TEM microphotographs indicate that the nanoparticles were well dispersed in the polymer matrix under the elongational flow field of the vane extruder. Crystallization and melting behavior were examined with DSC. The results show that TiO 2 nanoparticles have an inhibition for the cold crystallization process of PLA to some extent and the cold crystallization temperature of nanocomposites shifted to a maximum value at about 106 °C with low TiO 2 loadings (0.5 wt% or 1 wt%). Dynamic rheological measurements and TGA results show that the introduction of TiO 2 has significantly improved the thermal stability. The toughness, surface wettability and UV resistance of the composites were also investigated in detail.

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Atomic origins of high electrochemical CO2 reduction efficiency on nanoporous gold.

Weiqing Zhang, Jia He, Siyu Liu … (2018)

First principles calculations show that gold atoms with low generalized coordination numbers possess high activity for electroreduction of CO2 to CO. Atom-resolved three-dimensional reconstruction reveals that dealloyed nanoporous gold possesses such a favourable structure characteristic, which results in a faradaic efficiency as high as 94% for CO production.

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Author and article information

Journal

Journal ID (nlm-ta): RSC Adv

Journal ID (iso-abbrev): RSC Adv

Journal ID (publisher-id): RA

Journal ID (coden): RSCACL

Title: RSC Advances

Publisher: The Royal Society of Chemistry

ISSN (Electronic): 2046-2069

Publication date (Electronic, pub): 12 December 2019

Publication date (Electronic, collection): 9 December 2019

Publication date PMC-release: 12 December 2019

Volume: 9

Issue: 70

Pages: 41248-41255

Affiliations

[a] School of Materials Science and Engineering, South China University of Technology Guangzhou Guangdong 510640 China mcfliu@ 123456scut.edu.cn

[b] Kingfa Sci. & Tech. Co., Ltd Guangzhou Guangdong 510663 China yuxingxing@ 123456kingfa.com.cn

Author information

Xingxing Yu https://orcid.org/0000-0001-9357-9311

Article

Publisher ID: c9ra07703k

DOI: 10.1039/c9ra07703k

PMC ID: 9076460

PubMed ID: 35540030

SO-VID: 13061fa5-94a5-47c4-8ddc-6d4acb0145ca

History

Date received : 23 September 2019

Date accepted : 24 November 2019

Page count

Pages: 8

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pubstatus Paginated Article

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