Crystallization of poly(ethylene oxide) embedded with surface-modified SiO2 nanoparticles

Eunwoo Lee; Jin Yong Hong; Goran Ungar; Jyongsik Jang

doi:10.1002/pi.4402

Crystallization of poly(ethylene oxide) embedded with surface-modified SiO₂ nanoparticles

Eunwoo Lee
, Jin Yong Hong
, Goran Ungar
, Jyongsik Jang

Seoul National University
University of Sheffield

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

The crystallization of poly(ethylene oxide) (PEO) in the presence of silica nanoparticles (SiO₂ NPs) was investigated in terms of heterogeneous nucleation of SiO₂ NPs using polarizing optical microscopy and differential scanning calorimetry. The content and surface functionality of SiO₂ NPs were considered as the main factors affecting crystallization, and the effect of annealing time and temperature was also examined. The SiO₂ NPs acted as heterogeneous nucleates during the crystallization process, thereby enhancing the nucleation density and limiting the spherulitic growth rate. A kinetics study of non-isothermal crystallization showed that the crystallization rate of 5 wt% SiO₂/PEO nanocomposite was ca 2.1 times higher than that of neat PEO. In addition, among various surface-functionalized SiO₂ nanoparticles, alkyl-chain-functionalized SiO₂ NPs were favorable for achieving a higher crystallization rate due to the enhanced compatibility between the SiO₂ NPs and PEO chains.

Original language	English
Pages (from-to)	1112-1122
Number of pages	11
Journal	Polymer International
Volume	62
Issue number	7
DOIs	https://doi.org/10.1002/pi.4402
State	Published - Jul 2013
Externally published	Yes

Keywords

Crystallization
Nanocomposite
Nucleation
Poly(ethylene oxide)
Silica

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10.1002/pi.4402

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title = "Crystallization of poly(ethylene oxide) embedded with surface-modified SiO2 nanoparticles",

abstract = "The crystallization of poly(ethylene oxide) (PEO) in the presence of silica nanoparticles (SiO2 NPs) was investigated in terms of heterogeneous nucleation of SiO2 NPs using polarizing optical microscopy and differential scanning calorimetry. The content and surface functionality of SiO2 NPs were considered as the main factors affecting crystallization, and the effect of annealing time and temperature was also examined. The SiO2 NPs acted as heterogeneous nucleates during the crystallization process, thereby enhancing the nucleation density and limiting the spherulitic growth rate. A kinetics study of non-isothermal crystallization showed that the crystallization rate of 5 wt\% SiO2/PEO nanocomposite was ca 2.1 times higher than that of neat PEO. In addition, among various surface-functionalized SiO2 nanoparticles, alkyl-chain-functionalized SiO2 NPs were favorable for achieving a higher crystallization rate due to the enhanced compatibility between the SiO2 NPs and PEO chains.",

keywords = "Crystallization, Nanocomposite, Nucleation, Poly(ethylene oxide), Silica",

author = "Eunwoo Lee and Hong, \{Jin Yong\} and Goran Ungar and Jyongsik Jang",

year = "2013",

month = jul,

doi = "10.1002/pi.4402",

language = "英语",

volume = "62",

pages = "1112--1122",

journal = "Polymer International",

issn = "0959-8103",

publisher = "John Wiley and Sons Ltd",

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TY - JOUR

T1 - Crystallization of poly(ethylene oxide) embedded with surface-modified SiO2 nanoparticles

AU - Lee, Eunwoo

AU - Hong, Jin Yong

AU - Ungar, Goran

AU - Jang, Jyongsik

PY - 2013/7

Y1 - 2013/7

N2 - The crystallization of poly(ethylene oxide) (PEO) in the presence of silica nanoparticles (SiO2 NPs) was investigated in terms of heterogeneous nucleation of SiO2 NPs using polarizing optical microscopy and differential scanning calorimetry. The content and surface functionality of SiO2 NPs were considered as the main factors affecting crystallization, and the effect of annealing time and temperature was also examined. The SiO2 NPs acted as heterogeneous nucleates during the crystallization process, thereby enhancing the nucleation density and limiting the spherulitic growth rate. A kinetics study of non-isothermal crystallization showed that the crystallization rate of 5 wt% SiO2/PEO nanocomposite was ca 2.1 times higher than that of neat PEO. In addition, among various surface-functionalized SiO2 nanoparticles, alkyl-chain-functionalized SiO2 NPs were favorable for achieving a higher crystallization rate due to the enhanced compatibility between the SiO2 NPs and PEO chains.

AB - The crystallization of poly(ethylene oxide) (PEO) in the presence of silica nanoparticles (SiO2 NPs) was investigated in terms of heterogeneous nucleation of SiO2 NPs using polarizing optical microscopy and differential scanning calorimetry. The content and surface functionality of SiO2 NPs were considered as the main factors affecting crystallization, and the effect of annealing time and temperature was also examined. The SiO2 NPs acted as heterogeneous nucleates during the crystallization process, thereby enhancing the nucleation density and limiting the spherulitic growth rate. A kinetics study of non-isothermal crystallization showed that the crystallization rate of 5 wt% SiO2/PEO nanocomposite was ca 2.1 times higher than that of neat PEO. In addition, among various surface-functionalized SiO2 nanoparticles, alkyl-chain-functionalized SiO2 NPs were favorable for achieving a higher crystallization rate due to the enhanced compatibility between the SiO2 NPs and PEO chains.

KW - Crystallization

KW - Nanocomposite

KW - Nucleation

KW - Poly(ethylene oxide)

KW - Silica

UR - https://www.scopus.com/pages/publications/84878999942

U2 - 10.1002/pi.4402

DO - 10.1002/pi.4402

M3 - 文章

AN - SCOPUS:84878999942

SN - 0959-8103

VL - 62

SP - 1112

EP - 1122

JO - Polymer International

JF - Polymer International

IS - 7

ER -

Crystallization of poly(ethylene oxide) embedded with surface-modified SiO₂ nanoparticles

Abstract

Keywords

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