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Volume 14 (2019) : Issue 3, Mar

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The Journal of Engineering

Approach to the preparation of temperature-sensitive poly(N-isopropylacrylamide)/polyethylenimine microgel

Content Provider	IET Digital Library
Author	Wang, Tao Song, Yanan Hu, Jiawei Li, Jiaxi Shi, Shan
Abstract	A novel route was developed to the preparation of temperature-sensitive poly(N-isopropylacrylamide)/polyethylenimine (PNIPAM/PEI) microgels by the radical copolymerisation of N-isopropylacrylamide with acryloylated PEI in aqueous media. Here, the acryloylated polyethylenimine (PEI), used as a macromonomer, was synthesised by a dehydration condensation reaction between PEI and acrylic acid. The as-prepared microgels exhibited well-defined core/shell structure with PNIPAM-rich core surrounded by PEI-rich shell. The microgels showed the volume phase transition temperature near physiological temperature, which can be easily regulated by the pH of microgel dispersion.
Starting Page	404
Ending Page	408
Page Count	5
Volume Number	14
e-ISSN	17500443
Issue Number	Issue 4, Apr (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/mnl/14/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/mnl.2018.5359
Journal	Micro & Nano Letters
Publisher Date	2019-04-03
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Acrylic Acid Acryloylated Polyethylenimine Aqueous Media Core/shell Structure Dehydration Condensation Reaction Elastomers Gels And Sols Macromonomer Material Preparation Microgel Dispersion PEI-rich Shell Phase Transformations Physiological Temperature Plastics PNIPAM-rich Core Polymer Blends Polymer Gels Polymer Reactions And Polymerization Polymerisation Preparation of Polymers And Plastics Radical Copolymerisation Structure of Polymers Temperature-sensitive Poly(N-isopropylacrylamide)/polyethylenimine Microgel Volume Phase Transition Temperature
Content Type	Text
Resource Type	Article

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