Change in size and structure of monodisperse poly(N-isopropylacrylamide) microcapsules in response to varying temperature and ethyl gallate concentration

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Change in size and structure of monodisperse poly(N-isopropylacrylamide) microcapsules in response to varying temperature and ethyl gallate concentration. / Mou, Chuan Lin; He, Xiao Heng; Ju, Xiao Jie; Xie, Rui; Liu, Zhuang; Liu, Li; Zhang, Zhibing; Chu, Liang Yin.

In: Chemical Engineering Journal, Vol. 210, 01.11.2012, p. 212-219.

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Mou, Chuan Lin ; He, Xiao Heng ; Ju, Xiao Jie ; Xie, Rui ; Liu, Zhuang ; Liu, Li ; Zhang, Zhibing ; Chu, Liang Yin. / Change in size and structure of monodisperse poly(N-isopropylacrylamide) microcapsules in response to varying temperature and ethyl gallate concentration. In: Chemical Engineering Journal. 2012 ; Vol. 210. pp. 212-219.

Bibtex

@article{f484d5a770a64a58920d36056daffd73,
title = "Change in size and structure of monodisperse poly(N-isopropylacrylamide) microcapsules in response to varying temperature and ethyl gallate concentration",
abstract = "The change in size and structure of monodisperse poly(. N-isopropylacrylamide) (PNIPAM) microcapsules in response to varying temperature and ethyl gallate (EG) concentration has been investigated systematically. Monodisperse PNIPAM microspheres and core-shell microcapsules were fabricated via a microfluidic approach. The volume phase transition temperature (VPTT) of PNIPAM microspheres in aqueous solutions with varying EG concentrations were investigated systematically, and the experimental results showed that the VPTT of PNIPAM microspheres in EG aqueous solution decreased with increasing the EG concentration, due to the hydrogen bonding between PNIPAM networks and EG molecules. The change in size and structure of core-shell PNIPAM microcapsules in response to varying temperature and EG concentration was investigated visually by using a confocal laser scanning microscope (CLSM). The core-shell PNIPAM microcapsules changed their volume from swollen to shrunken state upon heating or increasing the EG concentration, and released the colored oil cores suddenly when the environmental temperature was increased to just above the VPTT or the EG concentration was increased to above a critical concentration. From the experimental data, a state diagram of the intact-to-broken transformation of core-shell PNIPAM microcapsules in aqueous solution as a function of temperature and EG concentration has been constructed for the first time.",
keywords = "Ethyl gallate, Microfluidics, Phase transition, Poly(N-isopropylacrylamide), Responsive core-shell microcapsules",
author = "Mou, {Chuan Lin} and He, {Xiao Heng} and Ju, {Xiao Jie} and Rui Xie and Zhuang Liu and Li Liu and Zhibing Zhang and Chu, {Liang Yin}",
year = "2012",
month = nov,
day = "1",
doi = "10.1016/j.cej.2012.08.095",
language = "English",
volume = "210",
pages = "212--219",
journal = "Chemical Engineering Journal",
issn = "1385-8947",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Change in size and structure of monodisperse poly(N-isopropylacrylamide) microcapsules in response to varying temperature and ethyl gallate concentration

AU - Mou, Chuan Lin

AU - He, Xiao Heng

AU - Ju, Xiao Jie

AU - Xie, Rui

AU - Liu, Zhuang

AU - Liu, Li

AU - Zhang, Zhibing

AU - Chu, Liang Yin

PY - 2012/11/1

Y1 - 2012/11/1

N2 - The change in size and structure of monodisperse poly(. N-isopropylacrylamide) (PNIPAM) microcapsules in response to varying temperature and ethyl gallate (EG) concentration has been investigated systematically. Monodisperse PNIPAM microspheres and core-shell microcapsules were fabricated via a microfluidic approach. The volume phase transition temperature (VPTT) of PNIPAM microspheres in aqueous solutions with varying EG concentrations were investigated systematically, and the experimental results showed that the VPTT of PNIPAM microspheres in EG aqueous solution decreased with increasing the EG concentration, due to the hydrogen bonding between PNIPAM networks and EG molecules. The change in size and structure of core-shell PNIPAM microcapsules in response to varying temperature and EG concentration was investigated visually by using a confocal laser scanning microscope (CLSM). The core-shell PNIPAM microcapsules changed their volume from swollen to shrunken state upon heating or increasing the EG concentration, and released the colored oil cores suddenly when the environmental temperature was increased to just above the VPTT or the EG concentration was increased to above a critical concentration. From the experimental data, a state diagram of the intact-to-broken transformation of core-shell PNIPAM microcapsules in aqueous solution as a function of temperature and EG concentration has been constructed for the first time.

AB - The change in size and structure of monodisperse poly(. N-isopropylacrylamide) (PNIPAM) microcapsules in response to varying temperature and ethyl gallate (EG) concentration has been investigated systematically. Monodisperse PNIPAM microspheres and core-shell microcapsules were fabricated via a microfluidic approach. The volume phase transition temperature (VPTT) of PNIPAM microspheres in aqueous solutions with varying EG concentrations were investigated systematically, and the experimental results showed that the VPTT of PNIPAM microspheres in EG aqueous solution decreased with increasing the EG concentration, due to the hydrogen bonding between PNIPAM networks and EG molecules. The change in size and structure of core-shell PNIPAM microcapsules in response to varying temperature and EG concentration was investigated visually by using a confocal laser scanning microscope (CLSM). The core-shell PNIPAM microcapsules changed their volume from swollen to shrunken state upon heating or increasing the EG concentration, and released the colored oil cores suddenly when the environmental temperature was increased to just above the VPTT or the EG concentration was increased to above a critical concentration. From the experimental data, a state diagram of the intact-to-broken transformation of core-shell PNIPAM microcapsules in aqueous solution as a function of temperature and EG concentration has been constructed for the first time.

KW - Ethyl gallate

KW - Microfluidics

KW - Phase transition

KW - Poly(N-isopropylacrylamide)

KW - Responsive core-shell microcapsules

UR - http://www.scopus.com/inward/record.url?scp=84866558683&partnerID=8YFLogxK

U2 - 10.1016/j.cej.2012.08.095

DO - 10.1016/j.cej.2012.08.095

M3 - Article

AN - SCOPUS:84866558683

VL - 210

SP - 212

EP - 219

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

SN - 1385-8947

ER -