Polymeric hollow microcapsules (PHM) via cellulose nanocrystal stabilized Pickering emulsion polymerization.

Cellulose nanocrystals Pickering emulsion polymerization Poly(N-isopropyl acrylamide) Polymeric hollow microcapsules Polystyrene

Journal

Journal of colloid and interface science
ISSN: 1095-7103
Titre abrégé: J Colloid Interface Sci
Pays: United States
ID NLM: 0043125

Informations de publication

Date de publication:
01 Nov 2019
Historique:
received: 31 05 2019
revised: 16 07 2019
accepted: 31 07 2019
pubmed: 12 8 2019
medline: 12 8 2019
entrez: 12 8 2019
Statut: ppublish

Résumé

A practical and sustainable method to prepare polymeric hollow microcapsules (PHMs) using cellulose nanocrystal (CNC) stabilized Pickering emulsion polymerization was developed. Pristine CNCs hydrolyzed from wood pulp are hydrophilic and could be employed as emulsifiers to prepare oil-in-water (O/W) Pickering emulsions. The O/W Pickering emulsions were used as templates for the Pickering emulsion polymerization of hydrophobic monomers inside the emulsion droplets. The crosslinked hydrophobic polymers phase separated and partitioned to the interface of the Pickering emulsion, leading to the formation of hydrophobic PHMs. Correspondingly, cinnamate modified CNCs with less surface hydrophilicity were employed as emulsifiers to obtain water-in-oil (W/O) inverse Pickering emulsions, which were then used as templates for inverse Pickering emulsion polymerization of hydrophilic monomers to prepare hydrophilic PHMs. Therefore, both hydrophobic and hydrophilic PHMs could be obtained via this approach. Herein, polystyrene, poly(4-vinylpyridine), and poly(N-isopropyl acrylamide) hollow microcapsules were prepared as models, where the size, crosslinking density, shell structure and stimuli-responsive properties of PHMs could be tuned by varying the synthesis parameters.

Identifiants

DOI: 10.1016/j.jcis.2019.07.107 PMID: 31401481
pubmed: 31401481
pii: S0021-9797(19)30893-8
doi: 10.1016/j.jcis.2019.07.107
pii:
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

489-497

Informations de copyright

Copyright © 2019 Elsevier Inc. All rights reserved.

Auteurs

Zhen Zhang (Z)

Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, PR China; Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L3G1, Canada; SCNU-TUE Joint Lab of Device Integrated Responsive Materials (DIRM), National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou Higher Education Mega Center, Guangzhou 510006, PR China; Shenzhen Guohua Optoelectronics Tech. Co. Ltd, Shenzhen 518110, PR China.

Maria Cheng (M)

Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L3G1, Canada.

Mia San Gabriel (MS)

Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L3G1, Canada.

Ângela Albuquerque Teixeira Neto (ÂA)

Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Sao Paulo 13083-970, Brazil.

Juliana da Silva Bernardes (J)

Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Sao Paulo 13083-970, Brazil.

Richard Berry (R)

CelluForce Inc., 625, Président-Kennedy Ave, Montreal, Quebec H3A 1K2, Canada.

Kam C Tam (KC)

Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L3G1, Canada. Electronic address: mkctam@uwaterloo.ca.

Classifications MeSH