Next Article in Journal
Electrospinning Pullulan Fibers from Salt Solutions
Next Article in Special Issue
Influence of Substituent Chain Branching on the Transfection Efficacy of Cyclopropenium-Based Polymers
Previous Article in Journal
Structural Features and the Anti-Inflammatory Effect of Green Tea Extract-Loaded Liquid Crystalline Systems Intended for Skin Delivery
Previous Article in Special Issue
Investigation of Thermal and Thermomechanical Properties of Biodegradable PLA/PBSA Composites Processed via Supercritical Fluid-Assisted Foam Injection Molding
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Polymers 2017, 9(1), 31; doi:10.3390/polym9010031

A Comprehensive Systematic Study on Thermoresponsive Gels: Beyond the Common Architectures of Linear Terpolymers

Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, London SW7 2AZ, UK
*
Author to whom correspondence should be addressed.
Academic Editor: Alexander Böker
Received: 4 December 2016 / Revised: 12 January 2017 / Accepted: 16 January 2017 / Published: 20 January 2017
(This article belongs to the Special Issue Young Talents in Polymer Science)
View Full-Text   |   Download PDF [4917 KB, uploaded 20 January 2017]   |  

Abstract

In this study, seven thermoresponsive methacrylate terpolymers with the same molar mass (MM) and composition but various architectures were successfully synthesized using group transfer polymerization (GTP). These terpolymers were based on tri(ethylene glycol) methyl ether methacrylate (TEGMA, A unit), n-butyl methacrylate (BuMA, B unit), and 2-(dimethylamino)ethyl methacrylate (DMAEMA, C unit). Along with the more common ABC, ACB, BAC, and statistical architectures, three diblock terpolymers were also synthesized and investigated for the first time, namely (AB)C, A(BC), and B(AC); where the units in the brackets are randomly copolymerized. Two BC diblock copolymers were also synthesized for comparison. Their hydrodynamic diameters and their effective pKas were determined by dynamic light scattering (DLS) and hydrogen ion titrations, respectively. The self-assembly behavior of the copolymers was also visualized by transmission electron microscopy (TEM). Both dilute and concentrated aqueous copolymer solutions were extensively studied by visual tests and their cloud points (CP) and gel points were determined. It is proven that the aqueous solution properties of the copolymers, with specific interest in their thermoresponsive properties, are influenced by the architecture, with the ABC and A(BC) ones to show clear sol-gel transition. View Full-Text
Keywords: thermoresponsive polymers; 2-(dimethylamino)ethyl methacrylate; injectable gels; 3-D printing; group transfer polymerization (GTP); terpolymers; complex architectures; well-defined polymers thermoresponsive polymers; 2-(dimethylamino)ethyl methacrylate; injectable gels; 3-D printing; group transfer polymerization (GTP); terpolymers; complex architectures; well-defined polymers
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary material

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Constantinou, A.P.; Zhao, H.; McGilvery, C.M.; Porter, A.E.; Georgiou, T.K. A Comprehensive Systematic Study on Thermoresponsive Gels: Beyond the Common Architectures of Linear Terpolymers. Polymers 2017, 9, 31.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Polymers EISSN 2073-4360 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top